American Technical Ceramics Corp. Begins Shipping New 600S Ultra-low ESR Microwave Capacitors.

Business Editors

HUNTINGTON STATION, N.Y.--(BUSINESS WIRE)--June 16, 2000

New Product Significantly Reduces Transmission Loss

for Cellular Base Stations

AMERICAN TECHNICAL CERAMICS CORP. (AMEX SYMBOL: AMK), a leading manufacturer of ceramic RF and microwave components, announced today that it has begun shipping its new 600 Series capacitor to customer's volume requirements. The 600S capacitor product, developed with ATC's 34 years of expertise in RF and microwave technologies, employs a new, proprietary dielectric formulation and an enhanced internal electrode structure. This combination of technological advancements makes the 600S an excellent candidate for myriad RF and microwave wireless applications. For example, when used in conjunction with wireless communications systems, the 600S exhibits outstanding performance advantages over other capacitor products in its class. The 600S optimizes signal integrity and reliability by reducing radio frequency circuit losses thereby enhancing overall system efficiency and performance.

Victor Insetta, Chairman of the Company, stated that "As the wireless industry continues its rapid expansion, American Technical Ceramics is committed to continuing to provide new standards for quality and design of capacitors, creating unique value for our customers. After two years in development, the 600S is now being tested and evaluated by our customers, a critical step in the design-in process that new components must undergo. We are confident that the unique benefits and performance of the 600S will make it the new standard for engineers designing wireless base stations and a strong complement to ATC's current capacitor lines."

The 600S, the first of a series of new capacitors specifically designed by ATC for high-volume wireless infrastructure markets, has both the lowest Equivalent Series Resistance (ESR) and highest working voltage in its class, allowing it to provide a new level of amplifier power added efficiency (PAE) circuit performance in a readily usable and compact size and shape. First introduced at the Wireless Symposium and Exhibition in February, the 600S marks ATC's continuing role as a premier player in this fast-growing segment of the communications market. In addition to topping the industry's ESR standards, its efficiency and superior thermal conducting properties allow it to run much cooler at high signal power levels typical of amplifier applications.

The 600S is the first of a series of products planned to be manufactured in ATC's Jacksonville "Factory of the Future" utilizing a new generation of high-performance materials, using processes and equipment specifically developed for economical high-volume production.

ATC is offering the 600S as a catalog, off-the-shelf product with an industry standard form factor (0603) with solderable termination over a nickel barrier. ATC offers the 600S in reels of 500 and 4000 pieces, as well as in three design kits for the engineer.

American Technical Ceramics Corp. (ATC) designs, develops, manufactures and markets RF/Microwave/Millimeter/Wave ceramic and porcelain capacitors and Thin Film Products. ATC's products are used in a wide variety of commercial and military applications, including medical electronics, wireless communications, satellite equipment, missile systems and aircraft radar and navigation systems. For more information, please log on to our website at www.atceramics.com, or call ATC at [phone].

"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, 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 American Technical Ceramics Corp.'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.