SMSC ANNOUNCES APPOINTMENT OF DAVID S. SMITH AS CFO

Hauppauge,  NY - September 19, 2005 - SMSC (Nasdaq:  SMSC) today  announced that
David S. Smith has joined  SMSC as Senior  Vice  President  and will also become
Chief Financial Officer (CFO) effective October 12, 2005, upon completion of the
10-Q  filing  process  for SMSC's  second  quarter of fiscal  2006.  As planned,
current CFO Andrew M. Caggia is retiring. After a period of part-time employment
to insure a smooth transition, it is expected that Mr. Caggia will continue as a
member of SMSC's Board of Directors.

Mr.  Smith's  responsibilities  as Senior  Vice  President  and CFO at SMSC will
include all financial and information systems functions,  including  accounting,
strategic  planning,  forecasting,   investor  relations,  risk  management  and
treasury.

Mr. Smith held the CFO position  with the  multi-billion  dollar,  multinational
publicly listed companies Dover Corporation and Crane Co. Most recently,  he has
advised small and mid-sized companies on financial  management issues. Mr. Smith
received his Master's  Degree in Business  Administration  from Wharton  School,
University  of  Pennsylvania  and his  Bachelor  of Arts  degree  from  Columbia
College, Columbia University.

"I am  pleased  David  Smith has  joined  SMSC and will be the  Company's  Chief
Financial  Officer,"  said  Steven J.  Bilodeau,  Chairman  and Chief  Executive
Officer. "David brings business acumen, financial management experience in large
international  companies and strategic  leadership  that enhance our  management
team as we continue to grow our global business and build our market profile."

As part of his agreement to join SMSC,  inducement  stock option grants covering
an aggregate of 150,000 shares,  all having exercise prices equal to the closing
price per share of SMSC common  stock on the grant date of  September  16, 2005,
have been granted to Mr.  Smith.  This notice is being made in  accordance  with
Nasdaq Marketplace Rule 4350.

About SMSC:

Many of the world's most successful global  technology  companies rely upon SMSC
as a go-to resource for semiconductor system solutions that span analog, digital
and mixed-signal  technologies.  Leveraging  substantial  intellectual property,
integration  expertise and a comprehensive  global  infrastructure,  SMSC solves
design  challenges  and delivers  performance,  space,  cost and  time-to-market
advantages  to its  customers.  SMSC's  application  focus  targets key vertical
markets  including  mobile  and  desktop  PCs,  servers,  consumer  electronics,
automotive infotainment and industrial  applications.  The Company has developed
leadership  positions in its select  markets by providing  application  specific
solutions such as mixed-signal PC system controllers,  non-PCI Ethernet, ARCNET,
MOST, Hi-Speed USB and other high-speed serial communications.

SMSC is headquartered  in Hauppauge,  New York with operations in North America,
Taiwan,  Japan, Korea, China and Europe.  Engineering design centers are located
in Arizona, New York, Texas and Karlsruhe,  Germany.  Additional  information is
available at www.smsc.com.

Forward Looking Statements:

Except for historical  information  contained  herein,  the matters discussed in
this  announcement are  forward-looking  statements about expected future events
and financial and operating results that involve risks and uncertainties.  These
include the timely development and market acceptance of new products; the impact
of competitive  products and pricing; the effect of changing economic conditions
in domestic  and  international  markets;  changes in customer  order  patterns,
including loss of key customers or distributors,  order cancellations or reduced
bookings;   and  excess  or  obsolete  inventory  and  variations  in  inventory
valuation,  among others. Such statements are qualified in their entirety by the
inherent risks and  uncertainties  surrounding  future  expectations and may not
reflect  the   potential   impact  of  any  future   acquisitions,   mergers  or
divestitures.

SMSC  competes  in the  semiconductor  industry,  which  has  historically  been
characterized  by intense  competition,  rapid  technological  change,  cyclical
market patterns,  price erosion and periods of mismatched  supply and demand. In
addition,  sales of many of the Company's  products  depend  largely on sales of
personal  computers  and  peripheral  devices,  as well as general  industry and
market  conditions.  Reductions  in the  rate  of  growth  of the  PC,  consumer
electronics, embedded or automotive markets could adversely affect its operating
results.  SMSC  conducts  business  outside the United  States and is subject to
tariff and  import  regulations  and  currency  fluctuations,  which may have an
effect on its business. All forward-looking statements speak only as of the date
hereof and are based upon the  information  available to SMSC at this time. Such
information is subject to change, and the Company may not necessarily inform, or
be  required to inform,  investors  of such  changes.  These and other risks and
uncertainties,  including  potential  liability resulting from pending or future
litigation,  are detailed from time to time in the Company's  reports filed with
the SEC.  Investors are advised to read the Company's Annual Report on Form 10-K
and  quarterly  reports  on Form 10-Q  filed with the  Securities  and  Exchange
Commission,  particularly those sections entitled "Other Factors That May Affect
Future  Operating  Results" for a more  complete  discussion  of these and other
risks and uncertainties.

SMSC is a registered  trademark of Standard  Microsystems  Corporation.  Product
names and company names are trademarks of their respective holders.

Contact:
Carolynne Borders
Director of Corporate Communications
SMSC
Phone: 631-435-6626
Fax: 631-273-5550
carolynne.borders@smsc.com