Meet the 85°C/85% RH Test: The Unsung Hero of Reliability Testing

Meet the 85°C/85% RH Test: The Unsung Hero of Reliability Testing Meet the 85°C/85% RH Test: The Unsung Hero of Reliability Testing If you’re in the business of designing products that need to withstand heat, humidity, and time, you probably know about the 85°C/85% RH test. This amazing benchmark ensures reliability, durability, and environmental resistance across […]

Periodic Maintenance and Calibration

Periodic Maintenance and Calibration Every time a chamber is in operation, there is stress and wear applied to it; chambers that are used more frequently and with harsher test parameters will undergo more wear. As test chambers are made up of several mechanical components, periodic maintenance and calibration are important services that should be conducted […]

Comparison Testing of Shock vs. Vibration ESS Systems

Comparison Testing of Shock vs. Vibration ESS Systems HAST (Highly Accelerated Stress Test) Articles: A Comparison of HAST to Conventional THB Testing The use of HAST (highly accelerated stress test) for reliability assessment of nonhermetic packages is driven by reliability improvements in plastic packaging and passivation materials. Conventional Temperature/Humidity/Bias (85/85) testing is inefficient in measuring these reliability performance […]

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

Highly Accelerated Stress Test (HAST) For Low-cost Flip Chip on Board Technology Highly Accelerated Stress Test (HAST) For Low-cost Flip Chip on Board Technology Highly Accelerated Stress Test (HAST) For Low-cost Flip Chip on Board Technology Flip chip on board (FCOB) technology has been in widespread application. The reliability testing of solder-joints and the delamination between […]

HAST Applications: Acceleration Factors and Results for VLSI Components

HAST Applications: Acceleration Factors and Results for VLSI Components HAST (Highly Accelerated Stress Test) Articles: HAST Applications: Acceleration Factors and Results for VLSI Components Results and acceleration factors between several highly accelerated stress test (HAST) conditions and 85 °C / 85% relative humidity tests are given for NMOS EPROM’s (erasable programmable read-only memories) and CMOS RAMs (random-access memories). Two […]

Hastest Solutions Advantages

Hastest Solutions Advantages HIRAYAMA HAST CHAMBERS HAST/PCT Systems AUTOCLAVES PRESSURE POTS Advantages of the HAST SYSTEM Shortened evaluation time Realistic Reliability Acceleration Factors Industry standard for: Qualifications Incoming Lot Acceptance Reliability Assurance Materials evaluation R&D Tool for increased accuracy of evaluation and life analysis: Commercial applications Military applications JEDEC standards for Plastic encapsulants Accepted Worldwide […]

Electrochemical Migration…Under Highly Accelerated Stress Conditions

Electrochemical Migration…Under Highly Accelerated Stress Conditions Electrochemical Migration…Under Highly Accelerated Stress Conditions Land grid array sockets are used as separable interconnects between printed circuit boards and high I/O integrated circuit components. Metal-in-elastomer land grid array sockets consist of an array of elastomer contacts, a polyimide insulator and a thermoplastic frame. Silver particles are embedded in the silicone […]

A Comparison of HAST to Conventional THB Testing

A Comparison of HAST to Conventional THB Testing HAST (Highly Accelerated Stress Test) Articles: A Comparison of HAST to Conventional THB Testing The use of HAST (highly accelerated stress test) for reliability assessment of nonhermetic packages is driven by reliability improvements in plastic packaging and passivation materials. Conventional Temperature/Humidity/Bias (85/85) testing is inefficient in measuring these reliability performance […]

How to Select a HAST Chamber

How to Select a HAST Chamber HAST (Highly Accelerated Stress Test) Articles: Part I HAST CHAMBERS When you are looking for a HAST Chamber keep two key aspects in mind: 1. A HAST CHAMBER is a Precision Scientific Instrument – It is NOT a run-of-the-mill Temperature and Humidity Chamber. It is a piece of testing […]

Reliability Tests of Ultrasonic Bonding Methods Using HAST and THB

Reliability Tests of Ultrasonic Bonding Methods Using HAST and THB HAST (Highly Accelerated Stress Test) Articles: Reliability Tests of Ultrasonic Bonding Methods Using HAST and THB Reliability is one of the most important questions in any application, on both the package (component) and the board (system) levels. The paper describes some life time test methods, equipment and processes […]