Technical Articles:

ESS (Environmental Stress Screening) Articles:

Comparison Testing of Shock vs. Vibration ESS Systems

Principal Investigator: Dr. Hong-sun Liu, Quanta Laboratories

Contributors: Larry Foshee, Motion Engineering, Ron Weglinski, Susan Mercovich, Greg Wilterdink, Transistor Devices Inc.

It is well known that Environmental Stress Screening (ESS) is a very effective tool to precipitate the weaknesses of a product. Currently however, the most available equipment for this process is the pneumatic hammer (shock) system. The author has developed a new ESS system that utilizes a skewed fixture together with an electromagnetic shaker system (or a hydraulic shaker system) in conjunction with a fast ramping chamber (Ref 1). The advantages of this system are...

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HAST (Highly Accelerated Stress Test) Articles:

How to Select a HAST Chamber

A Comparison of HAST to Conventional THB Testing

Highly Accelerated Stress Test (HAST) For Low-cost Flip Chip on Board Technology

Electrochemical Migration...Under Highly Accelerated Stress Conditions

Reliability Tests of Ultrasonic Bonding Methods Using HAST and THB

HAST Applications: Acceleration Factors and Results for VLSI Components

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