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Credence to Unveil New Fully Integrated Prober at SEMICON Japan 96.

TOKYO--(BUSINESS WIRE)--Nov. 27, 1996--Credence Systems Corp. (NASDAQ:CMOS), a leading manufacturer of automatic test equipment (ATE) for the semiconductor industry, today announced they joined forces with TSK (Tokyo Seimitsu Co. LTD) to create a fully integrated, state of the art, comprehensive turnkey test solution for the Microcomponent production environment.

Credence will unveil this test system with extended functionality during SEMICON Japan, Booth No. 6-124, Dec. 4-6.

Credence specifically designed the newly integrated test head into a high-performance prober for IC manufacturers to realize increased yields in a high volume production environment.

Developed in response to aggressive manufacturing plans requiring a production-proven integrated test system which can be installed quickly and operated ergonomically, Credence's Super Compact (SC) test head is submerged in the APM-90A prober. The test head's weight rests completely on the three adjustable support points directly within the prober's structure.

Redefining the probe test market, Credence's strategy of embedding the SC test head within the prober is the next step beyond performance test at probe (PTAP). As PTAP brought the measuring and detecting circuits into close proximity to the device under test (DUT), removing the manipulator and locking down the test head further reduces any chance of misalignment for greater throughput and reliability.

The new design provides the ability to fully characterize devices at the earliest point in the manufacturing process, giving manufacturers a fundamental economic advantage to increase profitability through achieving higher yields.

"With escalating IC packaging costs, Credence enables manufacturers to virtually eliminate assembling defective devices," said David Ranhoff, Credence's senior vice president, Sales and Marketing. "Once again, Credence engineers a robust system that delivers the ultimate high volume production test solution."

A key benefit in the new design is the total lack of any stand alone or dedicated manipulator. Credence's integrated test prober solution decreases the floor space as well as the cost of the system and enables continuous, repeatable docking.

This unique compact arrangement is extremely robust and extends the test systems' functionality. After planarization the test head is locked to the prober module for a complete, rigidly integrated unit, eliminating any independent vibrations of the two systems. In the past, these vibrations have challenged test measurement accuracy and robbed fabs of higher yields.

Without a manipulator, the new integrated test prober requires minimum interface as only the Probe Card comes between the tester pins and the DUT. A front loading semi-automatic Probe Card Changer eliminates any operator subjectivity, by replacing the cards without undocking the test head.

This high-speed transfer is completed safely and accurately in less than 1.5 minutes. The operator functions are also improved by the ability to run the integrated system from one point of entry only.

This optimized solution provides manufacturers with a significant tool that will reduce their time to market, which is critical in today's demanding device market. The integrated prober is designed to maximize the system uptime, test floor resources and overall efficiency. Accurate sorting of data before the traditional back end process flow begins enables IC manufacturers to achieve higher yields and uncompromised performance.

Credence Systems Corp. is a leading manufacturer of automatic test equipment (ATE) that serves a broad spectrum of the worldwide semiconductor industry's testing needs. Credence offers a wide range of products with test capabilities for digital, mixed-signal, and memory semiconductors.

The company utilizes its proprietary CMOS technologies to redefine test with products that are designed to solve its customers' business problems through technology while meeting the increasingly demanding performance requirements of today's ATE market.

The Company is headquartered in Fremont, Calif., with manufacturing in Beaverton, Ore. Credence is listed on the Nasdaq National Market under the symbol CMOS and can be found on the World Wide Web at www.credence.com -0-

Note to Editors: Credence, Credence Systems and SC Series are trademarks of Credence Systems Corp. Other trademarks mentioned in this release are the intellectual property of their respective owners.

CONTACT: Credence Systems Corp.

Connie Graybeal or Bill Bottoms, 510/657-7400

or

The Loomis Group Inc.

Bruce Bedortha, 415/882-9494
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Copyright 1996, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Date:Nov 27, 1996
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