Securities and Exchange Commission
                             Washington, D.C. 20549
                                    FORM 10-K
                [X] Annual Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934
    (Mark One)          for the fiscal year ended January 1, 2000 or
                [ ] Transition Report Pursuant to Section 13 or 15(d)
                     of the Securities Exchange Act of 1934
                        for the transition period from         to

                         Commission file number 0-20388

                                Littelfuse, Inc.
             (Exact name of registrant as specified in its charter)

        Delaware                                         36-3795742
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
incorporation or organization)

800 East Northwest Highway,
Des Plaines, Illinois                                       60016
(Address of principal executive offices)                  (Zip Code)

                                  847/824-1188
              (Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act: None

Securities  registered  pursuant to Section 12(g) of the Act: Common Stock, $.01
par value, and Warrants to purchase shares of Common Stock, $.01 par value

         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. Yes X No

         Indicate by check mark if disclosure of delinquent  filers  pursuant to
Item 405 of Regulation S-K is not contained  herein,  and will not be contained,
to the best of  registrant's  knowledge,  in  definitive  proxy  or  information
statements  incorporated  by  reference  in Part  III of this  Form  10-K or any
amendment to this Form 10-K. [ X ]

         The aggregate market value of 18,334,779 shares of voting stock held by
non-affiliates  of the registrant was  approximately  $659,760,197  based on the
last reported sale price of the  registrant's  Common Stock,  $.01 par value, as
reported on The Nasdaq Stock Market on March 10, 2000.

     As of March 10, 2000, the registrant had outstanding  19,574,337  shares of
Common  Stock,  $.01 par value,  and  Warrants to purchase  2,461,309  shares of
Common Stock, $.01 par value.

     Portions  of the  following  documents  have  been  incorporated  herein by
reference to the extent indicated herein: Littelfuse, Inc. Proxy Statement dated
March 20,  2000 (the "Proxy  Statement")  --Part III.  Littelfuse,  Inc.  Annual
Report to Stockholders  for the year ended January 1, 2000 (the "Annual Report")
- -- Parts II and III.





                                                                Part I

ITEM 1.  BUSINESS

General

         Littelfuse,   Inc.  (the  "Company"  or   "Littelfuse")  is  a  leading
manufacturer and seller of fuses and other circuit protection devices for use in
the electronic,  automotive and general industrial markets.  Management believes
the  Company  is  ranked  first  in  market  share in both  the  electronic  and
automotive  markets  and  third in the  power  fuse  market  in  North  America.
Management believes the Company,  together with its licensees,  is also first in
market share in both the electronic and automotive markets worldwide.

         In the electronic market,  leading manufacturers such as Canon, Compaq,
Dell  Computer,  IBM, LG  Electronics,  Lucent  Technologies,  Motorola,  Nokia,
Nortel, Panasonic, Samsung, Sharp and Sony obtain a substantial portion of their
electronic circuit protection  requirements from the Company.  In the automotive
market,  the  Company or its  licensees  have  customer  relationships  with all
leading  automobile  manufacturers  throughout  the world.  Littelfuse  provides
substantially all of the automotive fuse requirements for vehicles  manufactured
domestically  by General  Motors and is the primary  supplier for Ford,  Daimler
Chrysler and all Japanese and most European auto manufacturer  transplants.  The
Company also competes in the power fuse market  selling to companies such as the
Allen Bradley  division of Rockwell  International  and Reliance  Electric.  See
"Business Environment: Circuit Protection Market."

         The Company manufactures its products on fully integrated manufacturing
and  assembly  equipment,  much  of  which  is  designed  and  built  by its own
engineers.  The Company  fabricates and assembles a majority of its products and
maintains  product quality through a rigorous quality assurance program with all
sites  certified  under  ISO  9000  standards  and its  world  headquarters  now
certified under the QS9000 standards.

         The Company's  products are sold worldwide through a direct sales force
and manufacturers' representatives.  In the Asia-Pacific region, the Company has
licensed  its  automotive  fuse  technology  to a  Japanese  firm that  supplies
automotive  fuses to Pacific Rim customers.  For the year ended January 1, 2000,
approximately  46% of the  Company's  net sales were to  customers  outside  the
United States (exports and foreign operations).

         References herein to "1997" or "fiscal 1997" refer to the calendar year
ended January 3, 1998. References herein to "1998" or "fiscal 1998" refer to the
fiscal year ended January 2, 1999.  References herein to "1999" or "fiscal 1999"
refer to the fiscal year ended January 1, 2000.

Business Environment:  Circuit Protection Market

         The  circuit  protection  market can be broadly  categorized  into five
major product areas:  electronic,  automotive,  industrial (power), high voltage
and  residential.  The  Company  sells  products  designed  for the  electronic,
automotive  and industrial  areas.  The Company  entered the circuit  protection
market  in 1927  with the  development  and  introduction  of the  first  small,
fast-acting fuse capable of protecting  sensitive test meters.  Since that time,
the Company has diversified its involvement in the circuit  protection market to
become a leader in the  production  of  electronic  and  automotive  fuses.  The
Company  also  entered the power fuse market in 1983 with a broad line of fuses,
including  several  proprietary  products.  The Company  believes it is a market
leader in circuit protection devices,  offering the broadest line of products in
the  industry  and the global  presence to serve major  markets  throughout  the
world.

         Electronic Products. Electronic circuit protection products are used to
protect power  circuits in a multitude of electronic  systems and fall into five
major  categories:  (1)  fuses,  (2)  resettables  (3)  electrostatic  discharge
suppressors (4) thyristors and (5) metal-oxide varistors.  Electronics fuses are
devices  which  contain  an element  which  melts in an  overcurrent  condition.
Resettables  are positive  temperature  coefficient  (PTC) polymer  devices that
limit the current  when an  overcurrent  condition  exists and let current  pass
again after the cause of the  overcurrent  is removed.  Electrostatic  discharge
(ESD)  suppressors  are polymer based devices that shunt  transient high voltage
energy away from circuitry.  Thyristors are fast switching silicon semiconductor
structures commonly used to protect telecommunications circuits from overvoltage
transients  such as those resulting from  lightning.  Metal-oxide  varistors are
ceramic  based  devices  designed to absorb high energy  transients  in order to
maintain  the  circuit  voltage  at safe  levels.  Applications  for  electronic
products   include   telecommunications   equipment,   computers   and  computer
peripherals,  power  supplies,  test and medical  instrumentation,  and consumer
electronic products.

         Automotive Products. Fuses are extensively used in automobiles, trucks,
buses and off-road equipment to protect  electrical  circuits and the wires that
supply electrical power to operate lights, heating, air conditioning, windshield
wipers, radios,  windows and controls.  Currently, a typical automobile contains
30 to 70 fuses, depending upon the options installed.  The market for automotive
fuses is expected to grow in the coming  years as more  electronic  features are
included in  automobiles,  and as the  development of electric,  hybrid and fuel
cell vehicles  increases.  Certain new vehicles,  such as the Cadillac  Seville,
Ford 150 series truck, Jeep Grand Cherokee and the Jaguar, contain as many as 50
to 90 fuses and this higher fuse count is expected to spread to other vehicles.

         Power  Products.   Power  fuses  include  both  current   limiting  and
non-current   limiting  devices  used  to  protect  electrical  systems  against
overcurrents.  Power fuses are rated and listed under one of many  Underwriters'
Laboratories fuse  classifications.  The three main end user market segments for
power  fuses  include  original  equipment  manufacturers  ("OEMs"),  industrial
maintenance  and repair  operations  ("MROs") and new  commercial and industrial
construction.  Major  applications  for  power  fuses  include  protection  from
over-load  and  short-circuit  currents in motor  branch  circuits,  heating and
cooling systems, control systems,  lighting circuits and electrical distribution
networks.

Littelfuse Products

         General.  The  Company is a leading  manufacturer  and seller of fuses,
varistors  and  other  circuit  protection  devices  for use in the  electronic,
automotive and general industrial  markets.  The Company's products are marketed
under the general  trademarked  names of Littelfuse(R)  and, where  appropriate,
Slo-Blo(R)  Fuse as well as the  trademarked  names of certain  of its  products
listed below in the  description  of the Company's  electronic,  automotive  and
power fuse products.






Product Sales. Net sales of the Company's  products by industry category for the
periods indicated are as follows:



                                                             Fiscal Year
                                                            (in thousands)
                                         -----------------------------------------------------------------
                                         -------------------- --------------------- ----------------------

                                                1999                  1998                  1997
                                         -------------------- --------------------- ----------------------
                                         -------------------- --------------------- ----------------------
                                                                                        
             Electronic                             $154,141              $133,085               $135,032
             Automotive                              101,270                96,686                102,139
             Industrial (Power)                       40,956                39,769                 37,994
                                         -------------------- --------------------- ----------------------
                                         ==================== ===================== ======================
                  Total                             $296,367              $269,540               $275,165
                                         ==================== ===================== ======================



         Electronic Products. The Company manufactures and sells a wide range of
electronic circuit  protection  products,  including  miniature and subminiature
fuses,  protectors and resettables.  Electronic miniature and subminiature fuses
are designed to provide circuit  protection in the limited space requirements of
electronic  equipment.  The Company entered the resettable device market in late
1996.  The  Company  entered  the ESD  suppressor  market  in late  1998 and the
varistor and thyristor market in 1999.

The Company's  electronic  circuit  protection  products are marketed  under the
following trademarked and brand names:

              PICO(R) II Fuse is a very fast-acting subminiature fuse with axial
              leads which can be automatically inserted into a circuit board. It
              is used in consumer electronics,  computers,  medical instruments,
              power supplies and telecommunication line cards. It was originally
              developed for the aerospace  industry where  extremely  small size
              and  high  reliability  were  prime   requisites.   This  fuse  is
              encapsulated  with an epoxy coating  which  protects the fuse from
              adverse environmental  conditions. It can stand up under the rough
              treatment  found in high speed  automated  circuit board  assembly
              processes used by many different manufacturers.

              2AG fuses are a miniature version of the standard 1/4" diameter by
              1-1/4"  long  glass  bodied  fuses  manufactured  for more than 40
              years. The fuse occupies about 1/3 of the space but still provides
              the  performance  of the larger  sized  product.  The  Company has
              developed a strong market in the telecommunications industry for a
              leaded  version of the 2AG fuse.  These fuses are used in business
              and  personal  telephone  systems,  answering  machines  and other
              equipment  connected to phone lines.  They are used to protect the
              system from  lightning  surges and  accidental  contact with power
              lines.  These  fuses  also  are  used  extensively  in  electronic
              ballasts for lighting.

              NANO2  (R) SMF  Fuse is a fourth  generation  surface  mount  fuse
              product  line.  The  compact  size (.240" x .100" x .100") of this
              rectangular shaped fuse is very attractive to design engineers. In
              addition,   the  flat  side  design  permits  efficient  pick  and
              placement by automated assembly equipment.  The NANO2 (R) SMF Fuse
              is used where space considerations are critical,  including laptop
              computers, camcorders and battery chargers.

              ALF(TM) II or "1206" SMF,  and the "0603" SMF are very fast acting
              thin film surface mount fuses  measuring  only .12 inch x .06 inch
              and .06  inch X .03  inch,  respectively.  The  subminiature  size
              assures  additional  space savings in surface mount  applications.
              They are completely  compatible with common soldering systems used
              in surface mount assembly  applications,  the ALF(TM) is available
              on  8mm  reels  for  use  with  automatic   placement   equipment.
              Applications  include  hard disk drives,  PC main boards,  digital
              cameras, CD-ROMs and cellular telephones.

              SMTelecom(TM)  is the first  surface  mount fuse to comply with UL
              1459  and UL 1950  third  edition  power  cross  requirements  for
              telecommunications.  The new SMTelecom(TM) Fuse protects all phone
              line connected  equipment  against  current surges  resulting from
              power cross,  power induction and lightning  strikes.  It is rated
              for 250 volts with a 600 volt short circuit  rating.  Four current
              ratings  are  offered,  from  0.75  to 1.5  amperes.  Applications
              include  modems,  fax  machines,  desktop  telephones,   answering
              machines and line cards.

              Surface  Mount  PTC is  the  first  in  Littelfuse's  line  of PTC
              devices.  Its dimensions of 0.200" x 0.290" x 0.120" are ideal for
              circuit board applications where space is at a premium. It also is
              available  in 0.340" x 0.250" x 0.10" and  0.179" x 0.127" x 0.02"
              configurations.  This polymer surface mount PTC has the ability to
              reset itself once the fault or overcurrent  condition has cleared.
              This new product is used  primarily  for computer  and  peripheral
              applications such as motherboards,  disk drives, PC cards, modems,
              printers, etc.

              PulseGuard(R), an ESD suppressor, is a polymer based surface mount
              or  connector  style  device  that  utilizes  a  variable  voltage
              material  to shunt high  voltage  ESD energy  away from  circuitry
              without affecting data signals. The PulseGuard(R)  characteristics
              and  available  packages  provide  for  protection  of  integrated
              circuitry in applications such as PCs and PC peripherals.

              Metal Oxide Varistors (MOVs) are high energy  absorption  products
              that  provide  transient  overvoltage  and surge  suppression  for
              electronic,  telecommunication and industrial  applications.  MOVs
              are available in a radial  leaded  package,  used in  applications
              such as hand-held  electronic  devises,  cellular  telephones  and
              medical instruments.  A surface mount,  multilayer package is also
              available  for  circuit  board  applications  where  space is at a
              premium.

              UltraMOV(TM) is a series of radial leaded  varistors  intended for
              AC line applications  requiring high peak surge current rating and
              high   energy   absorption   capability.    Applications   include
              Uniterruptable   Power  Supplies  (UPS),   circuit  breakers,   AC
              appliance/controls and consumer electronics.

              The Company also markets a series of  industrial  MOVs designed to
              provide   surge   suppression   in  the  AC  mains   outdoors  and
              distribution panels of buildings.  Applications include industrial
              heavy motors, HVAC and motor/generator applications.

         Automotive  Products.  The Company is a primary  supplier of automotive
fuses to United  States,  Japanese  and  European  automotive  OEMs,  automotive
component parts  manufacturers  and automotive parts  distributors.  The Company
also sells its fuses in the  replacement  parts market,  with its products being
sold through  merchandisers,  discount stores and service  stations,  as well as
under private label by national firms.  Management believes that it currently is
the leading  worldwide  supplier of automotive fuses for new vehicle  production
and a leader for the aftermarket/replacement market.

         The Company  invented and owns all of the U.S.  patents  related to the
blade  type  fuse  which is the  standard  and most  commonly  used  fuse in the
automotive industry. The Company believes that, together with its licensees,  it
supplies  substantially  all of the blade type fuses used in the North  American
and  Japanese  markets  and a majority in the  European  market.  The  Company's
automotive fuse products are marketed under the following  trademarked and brand
names:

              AUTOFUSE(R)  or  ATO(R),  a standard  blade type fuse,  is used in
              automobiles  produced  worldwide and designed to provide  superior
              circuit  protection  in a small,  heat  resistant  package for low
              ampere applications.

              MINI(R) Fuse, smaller than its predecessor AUTOFUSE(R), is offered
              in a range from two amps to 30 amps and is designed to permit more
              fuses in the same amount of space than prior products.

              MAXI(TM) Fuse, a larger version of the  AUTOFUSE(R),  replaces the
              commonly  used low  technology  fusible  wire or fusible  links in
              automobile  electrical harnesses and is offered in a range from 20
              amps to 80 amps.

              MIDI(R)  Fuse is a bolt down version of the  MAXI(TM)  fuse.  This
              style is preferred by some European customers in the 50 to 100 amp
              range. Its primary use is for heating,  air conditioning and motor
              control circuits.

              J-CASE(R)  Fuse, is a cartridge  version of the Maxi(TM) fuse. Its
              primary use is for branch  circuit  protection  and  protection of
              circuits with inductive loads.

              MEGA(R)Fuse,  a higher  current  fuse with  ratings of 100 to 200
               amps, is used for protection of battery cables.

         Over half of the Company's North American  automotive (blade type) fuse
sales are made to wire harness  manufacturers  that  incorporate  the fuses into
their  products.  The  remaining  automotive  fuse  sales are made  directly  to
automotive manufacturers and through distributors who in turn sell most of their
products to  automotive  product  wholesalers,  such as warehouse  distributors,
discount stores and service stations.

         The Company believes it currently has adequate  production  capacity to
meet the  anticipated  increased  demand for  automotive  fuses  referred  to in
"Business  Environment:  Circuit  Protection  Market --  Automotive  Fuses." Any
required  expenditures for additional machinery and equipment are expected to be
funded by cash flow from operations.

         The Company has licensed its patented  Mini(R) and Maxi(TM)  automotive
fuse  designs to  Bussmann,  a division  of Cooper  Industries.  Bussmann is the
Company's  largest domestic  competitor.  Additionally,  the Company has entered
into a licensing  agreement with Pacific Engineering  Company,  Ltd., a Japanese
fuse manufacturer, which produces and distributes the Company's patented Mini(R)
automotive fuses to the Pacific Rim  manufacturing  operations of Japanese based
automobile manufacturers. See "Competition" and "Business -- Patents, Trademarks
and Other Intellectual Property."

         Power  Products.  The Company entered the power fuse market in 1983 and
manufactures and sells a broad range of low-voltage  circuit protection products
to electrical distributors and their customers in the construction,  OEM and MRO
markets. Power fuses are used to protect circuits in various types of industrial
equipment and circuits in industrial  plants,  office  buildings and residential
units.  The  Company's  power fuse  products  are marketed  under the  following
classifications:

              Class L fuses are  commonly  used as the first line of  electrical
              protection in building service entrance equipment of high capacity
              electrical systems.  Other applications  include switchboard mains
              and feeders,  distribution equipment and branch circuit protection
              for large motors.

              Class R fuses are commonly used downstream from Class L fuses in a
              variety of branch circuit  applications.  Both time delay and fast
              acting  versions  cover a range  of  applications  including  main
              feeder,  motor,  transformer  and  solenoids.  The  Company's  RK5
              INDICATOR  fuse series has won  numerous  product  awards and wide
              recognition  by industrial  plant  personnel.  These fuses have an
              integrated blown fuse indicator that turns from clear to dark once
              a fuse has blown. This reduces  troubleshooting time significantly
              and helps improve safety.

              Class J fuses are less  than  half the size of Class R to  provide
              substantial space savings. Applications for Class J are similar to
              Class R.  Additional  applications  include back up protection for
              circuit  breakers  and  protection  for both  IEC and  NEMA  rated
              devices.  The Company has also  introduced an indicating J line of
              fuses with indication functionality like the RK5 INDICATOR fuse.

              Class CC fuses, Littelfuse's KLDR (for transformer protection) and
              CCMR (for motor  branch  circuit  protection)  provide  protection
              formerly  supplied by fuses 10 times  larger.  Littelfuse  was the
              first to the market with these  products  and is the only  company
              with a CCMR rated up to 60 amps.

              Semiconductor  fuses,  designed for  supplementary  protection  of
              semiconducting devices, are used in electronic equipment and power
              equipment,  such as variable speed drives,  power rectifiers,  UPS
              systems and DC power suppliers.

              Midget fuses, in seven  different  series,  provide  supplementary
              overcurrent  protection  in such diverse  applications  as control
              circuits, control power transformers,  solenoids,  street lighting
              and computers.

              Medium voltage fuses, designed for general and back-up protection,
              protect motors,  transformers  and motor  controllers.  The medium
              voltage  fuse line was  expanded in 1998 with the  purchase of the
              product  line and  assets of a medium  voltage  fuse  manufacturer
              allowing for very short delivery times of these products.

         Other Products. In addition to the above products, the Company supplies
switches,  and circuit breakers to the automotive  industry and to appliance and
general  electronics  manufacturers.  The  Company  is also a  supplier  of fuse
holders  (including  OMNI-BLOK(R)),  fuse blocks (including  Powr-Blok(R)  power
distribution  systems)  and fuse clips  primarily  to  customers  that  purchase
circuit protection devices from the Company.


Product Design and Development

         The Company  employs  scientific,  engineering  and other  personnel to
improve its existing  product  lines and to develop new products at its research
and engineering facility in Des Plaines,  Illinois.  The Engineering  Department
consists of approximately 60 engineers, chemists, metallurgists, fusologists and
technicians.  This  department  is  primarily  responsible  for the  design  and
development of new products.

         Proposals for the  development of new products are initiated  primarily
by sales and marketing  personnel with input from customers.  The entire product
development process typically ranges from 6 to 18 months with continuous efforts
to reduce the development cycle.  During the fiscal years ended January 1, 2000,
January 2, 1999, and January 3, 1998, the Company  expended  approximately  $9.5
million,  $8.4 million and $7.9  million,  respectively,  on product  design and
development.






Patents, Trademarks and Other Intellectual Property

         The Company  generally  relies on patent and trademark laws and license
and nondisclosure  agreements to protect its rights in its trade secrets and its
proprietary products.  In cases where it is deemed necessary by management,  key
employees  are  required  to sign an  agreement  that  they  will  maintain  the
confidentiality of the Company's proprietary information and trade secrets. This
information, for business reasons, is not disclosed to the public.

         As of January 1, 2000,  the Company owned 112 patents in North America,
22 patents in the European  Economic  Community  and 34 patents in other foreign
countries.  The Company has also registered  trademark protection for certain of
its brand names and logos.  The 112 North American  patents are in the following
categories:  47 Electronic,  16 Resettable,  23 Automotive,  19 Power Fuse and 7
miscellaneous.

         New products are continually being developed to replace older products.
The  Company  regularly  applies  for patent  protection  on such new  products.
Although in the aggregate  the Company's  patents are important in the operation
of its businesses, the Company believes that the loss by expiration or otherwise
of any one patent or group of patents would not materially affect its business.

         The Company currently licenses its MINI(R) and MAXI(TM) automotive fuse
technology  to  Bussmann,  a division  of Cooper  Industries  and the  Company's
largest  domestic  competitor.  The license granted in 1987 is nonexclusive  and
grants  the  Company  the right to  receive  royalties  of 4% of the  licensee's
revenues  from the sale of the  licensed  products  with an  annual  minimum  of
$25,000.  Each license  expires  upon the  expiration  of the  licensed  product
patents.

         In addition,  a second license covering the MINI(R) Fuse technology was
granted to Pacific  Engineering  Company,  Ltd.,  a Japanese  manufacturer  that
produces and distributes the Company's patented  automotive fuses to Pacific Rim
operations of Pacific Rim-based automotive  manufacturers.  The license provides
the Company with royalties of 2.5% of the  licensee's  revenues from the sale of
the licensed products,  with an annual minimum of $100,000.  This second license
expires on April 6, 2006.

         License  royalties  amounted to  $250,000,  $286,000  and  $332,000 for
fiscal 1999, 1998 and 1997, respectively.

Manufacturing

         Much of the Company's manufacturing equipment is custom designed by its
engineers,  and the Company  performs the majority of its own  fabrication.  The
Company  stamps  most of the metal  components  used in its fuses,  holders  and
switches  from raw metal stock and makes its own contacts and springs.  However,
the Company does depend upon a single  source for a  substantial  portion of its
stamped metal end caps for one family of electronic  fuses. The Company believes
that alternative stamping sources are available at prices which would not have a
material  adverse  effect on the  Company.  The Company  also  performs  its own
plating (silver,  nickel, zinc, tin and oxides). In addition,  all thermoplastic
molded component requirements used for such products as the AUTOFUSE(R), MINI(R)
and  MAXI(TM)  product  lines are met through  the  Company's  in-house  molding
capabilities.

         After components are stamped,  molded, plated and readied for assembly,
final assembly is accomplished on fully  automatic and  semi-automatic  assembly
machines.  Quality assurance and operations personnel,  using techniques such as
Statistical  Process Control,  perform tests, checks and measurements during the
production  process  to  maintain  the  highest  levels of product  quality  and
customer satisfaction.

         The principal raw materials for the Company's  products  include copper
and copper alloys,  heat resistant  plastics,  zinc,  melamine,  glass,  silver,
solder,  sulphate  chipboard  and  linerboard.  The Company  depends upon a sole
source for several heat resistant  plastics.  The Company believes that suitable
alternative  heat resistant  plastics are available from other sources at prices
which would not have a material adverse effect on the Company.  All of the other
raw materials are purchased from a number of readily available outside sources.

         A computer-aided  design and manufacturing  system (CAD/CAM)  expedites
product  development  and  machine  design,  while  reliability  and high  power
laboratories test new products,  prototype  concepts and production run samples.
The Company  participates in  "Just-in-Time"  delivery programs with many of its
major  suppliers  and  actively  promotes  the  building  of strong  cooperative
relationships  with its suppliers by involving them in  pre-engineering  product
and process  development.  The Company also  sponsors an annual  major  supplier
conference and conducts a vendor certification program.

Marketing

         The  Company's  domestic  sales  staff  of  over  70  people  maintains
relations with major OEMs and distributors.  The Company's sales and engineering
personnel  interact  directly with the OEM engineers to ensure  maximum  circuit
protection   and   reliability   within  the   parameters  of  the  OEM  design.
Internationally, the Company maintains a sales staff of over 30 people and sales
offices in The Netherlands,  England, Ireland,  Singapore,  Korea and China. The
Company also markets its products indirectly through a worldwide organization of
over 120  manufacturers'  representatives  and distributes  through an extensive
network of electronic, automotive and electrical distributors.

         Electronic. The Company retains manufacturers'  representatives to sell
its electronic products and to call on major domestic and international OEMs and
distributors. The Company distributes approximately 43% of its domestic products
directly to OEMs, with the remainder sold through distributors nationwide.

         In the Asia-Pacific  region, the Company maintains a direct sales staff
and one or more  manufacturers'  representatives  in  Japan,  Singapore,  Korea,
Taiwan, China, Malaysia,  Thailand,  Philippines and Australia. The Company also
maintains an engineering  facility in Japan. In Europe,  the Company maintains a
direct  sales  force to call on OEMs  exclusively  and  utilizes  manufacturers'
representatives  to approach  distributors and smaller OEMs. Unlike its domestic
representatives,  these manufacturers'  representatives  purchase inventory from
the Company to facilitate  delivery and reduce  financial risks  associated with
currency exchange rate fluctuations.

         Automotive. The Company sells automotive fuses to OEMs through a direct
sales force in Detroit  consisting of four employees.  Salespersons  service all
the major automotive OEMs (including the United States manufacturing  operations
of foreign-based  OEMs) through both the engineering and purchasing  departments
of these  companies.  Twenty-two  manufacturers'  representatives  represent the
Company's products to aftermarket fuse retailers such as Autozone, Pep Boys, and
K-Mart. In Europe, the Company uses both a direct sales force and manufacturers'
representatives  to distribute its products to Mercedes Benz, BMW, Volvo,  Saab,
Jaguar and other OEMs, as well as aftermarket distributors.  In the Asia-Pacific
region,  the Company has licensed its automotive  fuse  technology to a Japanese
firm,  which  supplies  the  majority of the  automotive  fuses to the  Japanese
manufacturing  operations  in the region  including  Toyota,  Honda and  Nissan.
Additionally,  the  Company  has a direct  sales staff in Korea to call on major
OEMs in that market.

         Power.   The  Company   markets  and  sells  its  power  fuses  through
manufacturers'  representatives across North America. These representatives sell
power fuse products  through an  electrical  distribution  network  comprised of
approximately  1,800  distributor  buying  locations.  These  distributors  have
customers that include  electrical  contractors,  municipalities,  utilities and
factories   (including   both  MRO  and   OEM).   Some  of  the   manufacturers'
representatives  have consigned  inventory in order to facilitate rapid customer
delivery.

         The Company's field sales force (including  application  engineers) and
manufacturers'   representatives   call  on  both   distributors  and  end-users
(consulting  engineers,  municipalities,  utilities  and  OEMs) in an  effort to
educate these customers on the capabilities and characteristics of the Company's
products.

Business Segment Information

The Company has three reportable  business  segments:  The Americas,  Europe and
Asia-Pacific.  For information  with respect to the Company's  operations in its
three  geographic  areas for the fiscal year ended January 1, 2000, see "Item 8.
Financial  Statements and  Supplementary  Data - Business  Segment  Information"
incorporated herein by reference.

Customers

         The  Company  sells  to over  10,000  customers  worldwide.  No  single
customer  accounted  for more than 10% of net sales  during the last three years
except for its Japanese  stocking  representative  which accounted for 10.2% and
11% in 1998 and 1997, respectively.  The Japanese stocking representative serves
over 100 customers in the Asia-Pacific  electronic market. During the 1999, 1998
and 1997 fiscal years, net sales to customers outside the United States (exports
and foreign  operations)  accounted for  approximately  46.1%,  43.0% and 40.6%,
respectively, of the Company's total net sales.

Competition

         The  Company's   products   compete  with  similar  products  of  other
manufacturers, many of which have substantially greater financial resources than
the Company.  In the  electronic  fuse market,  the  Company's  competitors  are
Bussmann,  a division of Cooper Industries,  Bel Fuse, Inc., Raychem Division of
TYCO  International,  San-O  Industrial  Corp. and  Wickmann-Werke  GmbH. In the
circuit  protection  market,  the  Company's  competitors  are  Bourns,  Raychem
Division of TYCO  International,  AVX,  Maida,  Panasonic  and  Siemens.  In the
fuseholder  portion  of this  market,  the  Company's  principal  competitor  is
Schurter, Inc. In the automotive fuse market, the Company's competitors, both in
sales to  automobile  manufacturers  and in the  aftermarket,  are  Bussmann and
Pudenz  Division  of  Wickmann-Werke.   The  Company  licenses  several  of  its
automotive  fuse designs to Bussmann.  In the power fuse market,  the  Company's
major competitors include Bussmann and Ferraz Shawmut. The Company believes that
it  competes  primarily  on the basis of  innovative  products,  the  breadth of
available  product  lines,  the  quality  and  design  of its  products  and the
responsiveness of its customer service rather than through price competition.

Backlog

         The Company  does not consider  backlog to be a  predictive  measure of
results due to the Company's short delivery time. The Company  manufactures high
volume  products  based on its  demand  forecasts  and  manufactures  low volume
products based on customer orders. The Company attempts to ship such products to
the  customer  within five  business  days of the date of the order.  Generally,
orders which  request  delivery  within three weeks of the date of the order are
filled on time from available stock or current production.

Employees

         During  1999,  the  Company  employed   approximately   3,256  persons.
Approximately  54  employees  in Des  Plaines  and 694  employees  in Mexico are
covered by collective bargaining  agreements.  The Des Plaines agreement expires
March 31, 2002 and the Mexico  agreement  expires  January 31, 2001. The Company
has not  experienced any work stoppage or other form of labor dispute within the
last 20 years.  The Company  believes that its employee  relations are excellent
and that its  employees,  many of whom have long  experience  with the  Company,
represent a valuable  resource.  The Company  emphasizes  employee  training and
development and has established  Quality  Improvement Process (QIP) training for
its  employees   worldwide  so  as  to  promote  product  quality  and  customer
satisfaction.

Year 2000

For information  relating to Year 2000 see "Item 7. Management's  Discussion and
Analysis  of  Financial  Conditions  and  Results  of  Operations  - Year  2000"
incorporated herein by reference.

Environmental Regulation

         The Company is subject to numerous federal, state and local regulations
relating to air and water quality,  the disposal of hazardous  waste  materials,
safety and health.  Compliance with applicable environmental regulations has not
significantly changed the Company's  competitive  position,  capital spending or
earnings  in the  past  and the  Company  does  not  presently  anticipate  that
compliance with such regulations will change its competitive  position,  capital
spending  or  earnings  for the  foreseeable  future.  The  Company  employs  an
environmental  engineer to monitor  regulatory  matters and believes  that it is
currently in compliance in all material  respects with applicable  environmental
laws and  regulations,  except with respect to its facility  located in Ireland.
This facility was recently  acquired in connection  with the  acquisition of the
Harris suppression products division.  Corrective steps are being taken to bring
this facility into  compliance  with Irish  environmental  laws, and the Company
received an indemnity  from Harris  Corporation  with respect to these  matters.

ITEM 2. PROPERTIES

Littelfuse Facilities

         The Company's  operations are located in 19 owned or leased  facilities
worldwide,  containing  approximately 702,000 square feet. The U.S. headquarters
and principal  fabrication and distribution  facility is located in Des Plaines,
Illinois,  supported  by two  additional  plants in Illinois  and one in Mexico.
European  headquarters  and  the  primary  European  distribution  center  is in
Utrecht,  The Netherlands,  with  manufacturing  plants in England,  Ireland and
Switzerland.  Asia Pacific operations  include a distribution  center located in
Singapore,  with manufacturing  plants in Korea, China and the Philippines.  The
Company does not believe that it will  encounter any  difficulty in renewing its
existing leases upon the expiration of their current terms.  Management believes
that the  Company's  facilities  are adequate to meet its  requirements  for the
foreseeable future.

          The  following  table  provides  certain  information  concerning  the
Company's facilities:



                                                                                     Lease
                                                                                     Expir-
                                                        Size         Lease/          Ation        Industry
Location                          Use                   (sq.ft.)      Own             Date          Focus


                                                                                      
Des Plaines, Illinois             Administrative,         340,000    Owned               --       Auto, Electronic, Power
                                  Engineering,
                                  Manufacturing,
                                  Testing and Research

Centralia, Illinois               Manufacturing           45,200     Owned               --       Electronic

Arcola, Illinois                  Manufacturing          36,000      Owned               --       Power

Livonia, Michigan                 Administrative           1,200     Leased             2004      Auto

Piedras Negras, Mexico            Manufacturing          50,031      Leased             2000      Auto, Electronic, Power

Piedras Negras, Mexico            Manufacturing          12,594      Leased             2003      Electronic and Power

Piedras Negras, Mexico            Manufacturing          22,711      Leased             2002      Electronic and Power

Washington,                       Manufacturing,         60,000      Owned               --       Electronic, Auto, Other
England                           Sales and
                                  Distribution

Utrecht, The Netherlands          Warehousing              8,680     Leased             2001      Auto, Electronic, Other






                                                                                     Lease
                                                                                     Expir-
                                                        Size         Lease/          Ation        Industry
Location                          Use                   (sq.ft.)      Own             Date          Focus

                                                                                      
Utrecht, The Netherlands          Sales,                 12,000      Owned               --       Auto, Electronic, Other
                                  Administrative  and
                                  Engineering

Grenchen, Switzerland             Manufacturing          11,000      Owned               --       Auto

Singapore                         Sales and                9,827     Leased             2002      Electronic and Auto
                                  Distribution
Seoul, Korea                      Sales and              29,175      Owned               --       Electronic and Auto
                                  Manufacturing
Philippines                       Manufacturing          10,200      Leased             2000      Electronic
Suzhou, China                     Manufacturing          40,000      Owned               --       Electronic
Hong Kong, China                  Sales                    3,079     Leased             2002      Electronic
Yokohama, Japan                   Engineering              8,811     Leased             2000      Electronic
Sao Paulo, Brazil                 Sales and
                                  Distribution            1,200      Leased             2000      Electronic, Auto

Dundalk, Ireland                  Manufacturing           120,000    Owned               --       Electronic, Auto




ITEM 3.   Legal Proceedings

         The Company is not a party to any legal  proceedings  which it believes
will have a material  adverse  effect  upon the  conduct of its  business or its
financial position.

ITEM 4.  Submission of Matters to a Vote of Security Holders

         There were no matters  submitted to the Company's  stockholders  during
the fourth quarter of fiscal 1999.

Executive Officers of the Registrant

         The executive officers of the Company are as follows:







     Name                              Age                              Position

                                                 
Howard B. Witt                          59             Chairman, President and Chief Executive Officer

Kenneth R. Audino                       56             Vice President, Organizational Development
                                                         and Total Quality Management

William S. Barron                       57             Vice President, Marketing and Sales

Philip G. Franklin                      48             Vice President, Treasurer and Chief Financial
                                                                   Officer

Lloyd J. Turner                         56             Vice President, Operations

Hans Ouwehand                           53             Vice President, European Operations

Mary S. Muchoney                        54             Secretary



Officers of  Littelfuse  are elected by the Board of Directors  and serve at the
discretion of the Board.

         Howard B. Witt was elected as the  Chairman of the Board of the Company
in May,  1993. He was promoted to President and Chief  Executive  Officer of the
Company in February,  1990.  Prior to his  appointment  as  President  and Chief
Executive  Officer,  Mr. Witt served in several other key  management  positions
with the Company,  including Operations Manager from March 1979 to January 1986,
Vice  President-Manufacturing  Operations from January 1986 to January 1988, and
Executive  Vice  President  with full  operating  responsibilities  for all U.S.
activities from January 1988 to February 1990. Prior to joining Littelfuse,  Mr.
Witt was a division  president of Keene  Corporation from 1974 to 1979. Mr. Witt
serves as a Director  of Franklin  Electric  Co.,  Inc.  and  Material  Sciences
Corporation and is a member of the Electronic  Industries  Association  Board of
Governors. He also serves as a director of the Artisan Mutual Fund.

         Kenneth R. Audino, Vice President, Organizational Development and Total
Quality   management,   is  responsible  for  the  Company's   overall  quality,
reliability and environmental  compliance,  quality systems, human resources and
training efforts.  Mr. Audino joined Littelfuse as a Control Technician in 1964.
From  1964 to 1977,  he  progressed  through  several  quality  and  reliability
positions to Manager of Reliability  and Standards.  In 1983, he became Managing
Director of the European  Headquarters and later was named Corporate Director of
Quality  Assurance and  Reliability.  He was promoted to his current position in
1998.

     William S. Barron, Vice President,  Sales and Marketing, is responsible for
the Company's overall sales and marketing. Mr. Barron joined Littelfuse in March
1991. From August 1981 to March 1991, Mr. Barron served as Director of Sales and
Marketing of Cinch Manufacturing,  a division of TRW, and the General Manager of
one of its domestic divisions.

         Philip G.  Franklin,  Vice  President,  Treasurer  and Chief  Financial
Officer,  has responsibility  for the treasury,  investor  relations,  financial
control,  financial  reporting and information systems functions of the Company.
Mr.  Franklin  joined the Company in 1998 from  OmniQuip  International,  a $450
million construction equipment manufacturer which he helped take public.

         Lloyd J. Turner,  Vice President,  Operations,  has  responsibility for
manufacturing  operations  and related  support  functions.  Mr.  Turner  joined
Littelfuse in October 1988, as Director of Manufacturing Operations after having
served as an  Operations  Manager with Texas  Instruments  from November 1984 to
September 1988. He was promoted to his current position in 1991.

         Hans Ouwehand, Vice President,  European Operations, has responsibility
for all sales,  marketing,  manufacturing and engineering  activities in Europe.
Mr. Ouwehand  joined  Littelfuse in 1984 as Sales Manager,  Europe,  Electronics
Division.  He was later promoted to the position of European Sales and Marketing
Manager  for all  Littelfuse  products  and in 1986 to the  position  of General
Manager-European   Operations.  Prior  to  joining  Littelfuse,  his  industrial
background included research and development work with Sperry Rand and sales and
product management with Lameris Medical Instruments.

     Mary S.  Muchoney  has served as  Corporate  Secretary  since  1991,  after
joining Littelfuse in 1977. She is responsible for providing all secretarial and
administrative  functions for the President and  Littelfuse  Board of Directors.
Ms. Muchoney is a member of the American Society of Corporate Secretaries.

                                     PART II

ITEM 5. Market for Registrant's Common Equity and Related Stockholder Matters

         The information set forth under  "Quarterly  Stock Price" on page 40 of
the Annual Report to  Stockholders is  incorporated  herein by reference.  It is
also included in Exhibit 13.1 as filed with the SEC. As of March 10, 2000, there
were 236 holders of record of the Company's  Common Stock and in excess of 2,700
beneficial holders of its Common Stock.

         Since  September 22, 1992,  shares of the Common Stock have been traded
in the  over-the-counter  market and  quotations  are reported  using the symbol
"LFUS" on The Nasdaq Stock Market.

         The  Company has not paid any cash  dividends  in its  history.  Future
dividend  policy will be determined  by the Board of Directors  based upon their
evaluation  of  earnings,  cash  availability  and general  business  prospects.
Currently,  there are restrictions on the payment of dividends  contained in the
Company's  bank credit  agreement  which  relate to the  maintenance  of certain
restricted payment ratios.

ITEM 6.  Selected Financial Data

         The information  set forth under  "Selected  Financial Data - Five Year
Summary" on page 40 of the Annual Report to Stockholders is incorporated  herein
by reference. It is also included in Exhibit 13.1 as filed with the SEC.





ITEM 7. Management's  Discussion and Analysis of Financial Condition and Results
of Operations

         The information set forth under  "Management's  Discussion and Analysis
of Financial  Condition and Results of Operations" on pages 20 through 23 of the
Annual Report to Stockholders is  incorporated  herein by reference.  It is also
included in Exhibit 13.1 as filed with the SEC.

ITEM 7A.  Quantitative and Qualitative Disclosures about Market Risks

         The  information set forth under "Market Risk" on page 23 of the Annual
Report to Stockholders is incorporated herein by reference.  It is also included
in Exhibit 13.1 as filed with the SEC.

ITEM 8.  Financial Statements and Supplementary Data

         The  Report of  Independent  Auditors  and the  Consolidated  Financial
Statements  and notes thereto of the Company set forth on pages 24 through 35 of
the Annual Report to Stockholders are incorporated herein by reference. They are
also included in Exhibit 13.1 as filed with the SEC.

ITEM  9.  Changes  in and  Disagreements  with  Accountants  on  Accounting  and
Financial Disclosure

         None.


                                    PART III

ITEM 10.  Directors and Executive Officers of the Registrant

         The  information  set forth under  "Election of Directors" and "Section
16(a)  Beneficial  Ownership  Reporting  Compliance"  in the Proxy  Statement is
incorporated  herein by reference.  The information  set forth under  "Executive
Officers of the Registrant" in Part I of this Report is  incorporated  herein by
reference.

ITEM 11.  Executive Compensation

         The information set forth under "Compensation of Executive Officers" in
the Proxy Statement is incorporated herein by reference, except for the sections
captioned "Reports of the Compensation Committee on Executive  Compensation" and
"Company Performance."

ITEM 12.  Security Ownership of Certain Beneficial Owners and Management

         The information set forth under  "Ownership of Littelfuse,  Inc. Common
Stock" in the Proxy Statement is incorporated herein by reference.






ITEM 13.  Certain Relationships and Related Transactions

         The  information  set forth under  "Certain  Relationships  and Related
Transactions" in the Proxy Statement is incorporated herein by reference.

                                     PART IV

ITEM 14.  Exhibits, Financial Statement Schedules and Reports on Form 8-K

               (a)         Financial Statements and Schedules

                     (1)   Financial   Statements.   The   following   financial
                           statements   included   in  the   Annual   Report  to
                           Stockholders are incorporated herein by reference.

                           (i)  Report of Independent Auditors (page 36)

                           (ii)  Consolidated  Statements of Financial Condition
                                 as of  January  1,  2000 and  January  2,  1999
                                 (pages 24 and 25).

                           (iii) Consolidated Statements of Income for the years
                                 ended  January  1,  2000,  January  2, 1999 and
                                 January 3, 1998 (page 26).

                           (iv)  Consolidated  Statements  of Cash Flows for the
                                 years  ended  January 1, 2000,  January 2, 1999
                                 and January 3, 1998 (page 27).

                           (v)   Consolidated Statements of Shareholders' Equity
                                 for the years ended January 1, 2000, January 2,
                                 1999 and January 3, 1998.
                                 (page 28).

                           (vi)  Notes  to  Consolidated   Financial  Statements
                                   (pages 29-35).

                (2)   Financial  Statement  Schedules.  The following  financial
                      statement schedules are submitted herewith for the periods
                      indicated therein.

                    (i)  Schedule   II-Valuation  and  Qualifying  Accounts  and
                         Reserves

                      All other  schedules  for which  provision  is made in the
                      applicable  accounting  regulation of the  Securities  and
                      Exchange  Commission  are not  required  under the related
                      instructions or are inapplicable and, therefore, have been
                      omitted.

                (3)   Exhibits

                      See Exhibit Index on pages 21-23,  incorporated  herein by
                         reference.

    (b)         Reports on Form 8-K

                There were no  reports on Form 8-K during the fourth  quarter of
                    1999.








                                LITTELFUSE, INC.
          SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
                                 (In Thousands)



                                                                Additions
                                               Balance at       Charged to                         Balance at
                                               Beginning        Costs and       Deductions           End of
        Description                            Of Year          Expenses           (A)                Year
                                               ----------       ----------      ----------         -------
Year ended January 1, 2000
  Allowance for losses on
                                                                                       
    accounts receivable . . . . . .            $ 1,103          $   614         $   147            $ 1,570
                                               =======          =======         =======            =======

  Reserves for sales discounts
    and allowances . . . . . . . .             $ 4,782          $   769         $    --            $ 5,551
                                               =======          =======         =========          =======



Year ended January 2, 1999
  Allowance for losses on
    accounts receivable . . . . . .            $ 1,118          $   626         $   641            $ 1,103
                                               =======          =======         =======            =======

  Reserves for sales discounts
    and allowances . . . . . . . .             $ 4,781          $      1        $    --            $ 4,782
                                               =======          ========        =========          =======



Year ended January 3, 1998
  Allowance for losses on
    accounts receivable . . . . . .            $    896         $   410         $   188            $ 1,118
                                               ========         =======         =======            =======

  Reserves for sales discounts
    and allowances . . . . . . . .             $ 4,161          $  620          $    --            $ 4,781
                                               =======          ======          =========          =======




(A) Write-off of uncollectible  accounts, net of recoveries and foreign currency
translation.






                                                              SIGNATURES

         Pursuant to the  requirements  of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                                            Littelfuse, Inc.

                                                          By /s/ Howard B. Witt
                                                                 Howard B. Witt,
                                                        Chairman, President and
                                                         Chief Executive Officer

Date:  March 20, 2000

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this  report has been  signed  below by the  following  persons on behalf of the
registrant and in the capacities and on the dates indicated:

/s/ Howard B. Witt                            Chairman of the Board, President
Howard B. Witt                                    and Chief Executive Officer

/s/ John P.  Driscoll                                 Director
John P. Driscoll

/s/ Anthony Grillo                                    Director
Anthony Grillo

/s/ Bruce A. Karsh                                    Director
Bruce A. Karsh

/s/ John E. Major                                      Director
John  E. Major

/s/ John J. Nevin                                     Director
John J. Nevin

/s/ Philip G. Franklin                         Vice President, Treasurer
Philip G. Franklin                               and Chief Financial Officer
                                                  (Principal Financial Officer)











                                                                                              
                                 LITTELFUSE INC.
                                INDEX TO EXHIBITS
                                  Sequentialc)
                                                                                                    Page Number
Number                                Description of Exhibit a)

2.1        Plan of Reorganization under Chapter 11 of the Bankruptcy Code of
           Old Littelfuse.

3.1 Certificate of Incorporation (as amended to date).

3.1A       Certificate  of  Designations  of Series A Preferred  Stock (filed as
           Exhibit  4.2 to the  Company's  Current  Report  on  Form  8-K  dated
           December 1, 1995 (1934 Act File No. 0-20388) and incorporated  herein
           by reference.)

3.2        Bylaws

4.1        Second amended restated bank credit agreement among Littelfuse, Inc.,
           as borrower, the lenders named therein and the First National Bank of
           Chicago, as agent, dated as of September 1, 1998.

4.2        Registration  Rights  Agreement,  dated  as  of  December  27,  1991,  between  Littelfuse,   Inc.  and  The
           Toronto-Dominion Bank Trust Company, as agent.

4.3        Warrant Agreement, dated as of December 27, 1991, between Littelfuse,
           Inc., and LaSalle  National Trust,  N.A., as warrant agent,  together
           with form of Warrant.  (filed as exhibit 4.3A to the  Company's  Form
           10-Q for the quarterly  period ended June 28, 1997 (1934 Act File No.
           -20388) and incorporated herein by reference), as amended.

4.4        Stock Plan for Employees and Directors of Littelfuse, Inc., as amended d)

4.5        Form of Stock Option Agreement

4.6        Specimen Common Stock certificate.

4.7        Littelfuse, Inc. Retirement Plan dated January 1, 1992, as amended and restated.d)



____________

a)   All of the exhibits,  (except those filed herewith or specifically noted as
     being   incorporated  by  reference  from  a  different  filing  under  the
     Securities as of 1933 or Securities  act of 1934) were filed as exhibits to
     the Company's Form 10 as filed with the Securities and Exchange  Commission
     which became  effective on September  16, 1992 (1934 Act File No.  0-20388)
     and are incorporated herein by reference.
b)   Filed herewith.
c)   This information appears only in the manually signed copy of the report.
d)   Indicates an employee  benefit plan,  management  contract or  compensatory
     plan or arrangement in which a named executive officer participates.












                                                                                                     Sequentialc)
                                                                                              
                                                                                                    Page Number
                                    Description of Exhibit a)
Number

4.8        Littelfuse, Inc. 401(k) Savings Plan.d)

4.9        Note  Purchase  Agreement,  dated as of  August  31,  1993,  relating  to  $45,000,000  principal  amount  of
           Littelfuse, Inc. 6.31% Senior Notes due August 31, 2000.

4.10       Littelfuse  Rights Plan  Agreement,  dated as of December  15,  1995,
           between Littelfuse,  Inc. and LaSalle National Bank, as Rights Agent,
           together with Exhibits thereto, as amended.

4.11       Note  Purchase  Agreement  dated as of  September  1,  1998,  relating  to  $60,000,000  principal  amount  of
           Littelfuse, Inc. 6.16% Senior Notes due September 1, 2005.

b)4.12     Form of Restricted Share Agreement

10.3       Patent  License  Agreement,  dated  as  of  July  28,  1995,  between
           Littelfuse,  Inc.  and Pacific  Engineering  Company,  Ltd.(filed  as
           exhibit 10.3 to the  Company's  Form 10K for the year ended  December
           28, 1996)

10.4       MINI(R) and  MAXITM  License  Agreement,  dated as of  June 21,  1989,  between  Littelfuse,  Inc.  and  Cooper
           Industries, Inc.

10.5       Patent License Agreement, dated as of January 1, 1987, between Littelfuse, Inc. and Cooper Industries, Inc.

10.6       1993 Stock Plan for Employees and Directors of Littelfuse, Inc., as amended d)

10.7       Littelfuse, Inc. Supplemental Executive Retirement Plan.d)

10.8       Littelfuse Deferred Compensation Plan for Non-employee Directors, as amended.d)








                                                                                                      Sequentialc)
                                                                                             
                                                                                                   Page Number

Number                           Description of Exhibit a)


 10.9      Littelfuse  Executive  Loan  Program  (filed as  Exhibit  10.2 to the
           Company's Form 10Q for the quarterly period ended June 30, 1995 (1934
           Act File No. 0-20388) and incorporated herein by reference.)d)

10.10      Employment Agreement dated as of September 1, 1996 between Littelfuse, Inc. and Howard B. Witt. d)

10.11      Change of Control Employment  Agreement dated as of September 1, 1996 between  Littelfuse,  Inc. and Howard B.
           Witt. d)

10.12      Form of change of Control  Employment  Agreement  dated as of September 1, 1996 between  Littelfuse,  Inc. and
           Messrs. Anderson, Audino, Barron, Krueger and Turner. d)

10.13      Form of change of Control Employment  Agreement dated as of January 4, 1999 between  Littelfuse,  Inc. and Mr.
           Franklin. d)

b)13.1     Portions of Littelfuse Annual Report to Stockholders for the fiscal year ended January 1, 2000.

b)22.1     Subsidiaries.

b)23.1     Consent of Independent Auditors.











                                                           Exhibit 22.1

                                                           SUBSIDIARIES

Littelfuse, S.A. de C.V.
Littelfuse FSC
Littelfuse Do Brasil Ltda.
Watseka LF, Inc.

Littelfuse, B.V.
Littelfuse, A.G.
Littelfuse Limited
Harris Ireland Development Co., Ltd.
Harris Ireland Limited
Joyrush Investments Ltd.
REMPAT Holding B.V.
REMPAT Financial B.V.

Littelfuse Far East Pte Ltd.
Littelfuse HK Limited
Littelfuse Holdings Pte Ltd.
Suzhou Littelfuse OVS Ltd.
Littelfuse KK
Littelfuse Triad Inc.
Littelfuse Phils Inc.