Exhibit 99.1

American Technical Ceramics Corp. Names Bill Johnson Vice President of Sales

    HUNTINGTON STATION, N.Y.--(BUSINESS WIRE)--June 13, 2005--American
Technical Ceramics Corp. (AMEX Symbol: AMK), a leading manufacturer of
high-performance electronic components, including capacitors and thin
film circuits for a broad range of commercial and military
applications, today announced that it has named Bill Johnson Vice
President of Sales.
    Victor Insetta, President and Chief Executive Officer of the
Company, stated, "We are pleased to have Bill Johnson join our team.
Bill has over twenty-five years experience in sales, manufacturing and
marketing in the electronic components industry. As our business
expands in the global marketplace, Bill's strong combination of
experience and keen ability to identify and meet client needs
compliments our approach of working with our clients and meeting
client needs through unique offerings. Bill's experience in global
sales channel management and execution will help to continue our
strong growth."
    Prior to joining ATC, Bill Johnson was Vice President - Sales for
Precision Technology, a leader in the design and manufacture of linear
actuation and power transmission equipment. He previously held the
position of Vice President - Worldwide Sales for the electronic
component manufacturer KEMET Corporation, and was a Plant Manager for
Vishay Intertechnology. He began his career at AVX Corporation where
he held the positions of Regional Sales Manager and Product Marketing
Manager for this manufacturer or electronic components.
    American Technical Ceramics Corp. designs, develops, manufactures
and markets electronic components, including ceramic multilayer
capacitors and custom thin film circuits. The Company's products are
utilized in a broad range of commercial and military applications,
including wireless infrastructure, fiber optics, medical electronics,
semiconductor manufacturing equipment and satellite equipment.

    "Safe Harbor" statement under the Private Securities Litigation
Reform Act of 1995:

    This release may contain forward-looking statements that are
subject to risks and uncertainties, including, but not limited to,
economic and political conditions, the impact of competitive products,
product demand and market acceptance risks, changes in product mix,
costs and availability of raw materials, fluctuations in operating
results, delays in development of highly-complex products, risks
associated with international sales and sales to the U.S. military,
risk of customer contract or sales order cancellation and other risks
detailed from time to time in American Technical Ceramics Corp.'s
filings with the Securities and Exchange Commission, including,
without limitation, those contained under the caption "Item 1.
BUSINESS - CAUTIONARY STATEMENTS REGARDING FORWARD - LOOKING
STATEMENTS" in the Company's Annual Report on Form 10-K. These risks
could cause the Company's actual results for future periods to differ
materially from those expressed in any forward-looking statements made
by, or on behalf of, the Company. Any forward-looking statements
represent the Company's expectations or forecasts only as of the date
they were made and should not be relied upon as representing its
expectations or forecasts as of any subsequent date. The Company
undertakes no obligation to correct or update any forward-looking
statement, whether as a result of new information, future events or
otherwise, even if its expectations or forecasts change.

    CONTACT: American Technical Ceramics Corp.
             Kathleen M. Kelly, 631-622-4710
             invest@atceramics.com
             or
             The Global Consulting Group
             Allan Jordan, 646-284-9400
             ajordan@hfgcg.com