Actel's RTAX-S Device Family Hits Major Reliability Milestone

Products Achieve 1.4M Device-Hours of Life Testing Data

MOUNTAIN VIEW, Calif., November 21, 2006 — Actel Corporation (NASDAQ: ACTL, the leading provider of high-reliability field-programmable gate arrays (FPGAs) for space, today announced that its radiation-tolerant RTAX-S product family has successfully accumulated more than 1.4 million device-hours of life test data, which has yielded a failure in time (FIT) number of 12.76. A benchmark for the reliability of a product, one FIT is defined as one failure in 109 hours. Such a low FIT number for a relatively new product is a huge testament to the amount of testing that has been done to date and to the reliability of the product. During the course of reliability testing, a sample of 120 RTAX-S FPGAs successfully completed 6,000 hours of high-temperature operating life (HTOL) testing. Details of the reliability testing performed on the RTAX-S family can be found in the paper "RTAX-S Testing and Reliability Update," which is available on the Actel Web site at http://www.actel.com/documents/RTAXS_Rel_Test_WP.pdf.

"As a leader in the industry, Actel has an ongoing commitment and responsibility to provide the global aerospace community with highly reliable products that address our customer's design requirements," said Rich Brossart, vice president, product marketing at Actel. "Today, with the successful accumulation of more than 1.4 million device-hours of life test data and 6,000 hours of high-temperature operating life testing for the RTAX-S family, Actel continues to deliver on that commitment."

Designed to withstand the rigors of space-flight applications, the Actel radiation-tolerant RTAX-S FPGA family consists of devices ranging in density from 250,000 to 4-million equivalent system gates. The family, which includes the RTAX4000S, the industry's largest space-optimized four million system gate programmable logic device, offers unique features desirable for space-flight applications, including single-event upset (SEU)-hardened flip-flops, usable error-corrected on-board memory and a large number of user I/O. These, in combination with the inherent benefits of Actel's nonvolatile products, give designers the ability to reduce component count, minimize power consumption and save board space and weight while meeting their density, performance and radiation-resistance requirements. For more information on Actel solutions for the space industry, visit www.actel.com/products/aero/.

About Actel

Actel Corporation is the leader in single-chip FPGA solutions. The Company is traded on the NASDAQ National Market under the symbol ACTL and is headquartered at 2061 Stierlin Court, Mountain View, Calif., 94043-4655. For more information about Actel, visit http://www.actel.com. Telephone: 888-99-ACTEL (992-2835).

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