Accelerated aging test (HAST) - Reliability Test

Date：2021-11-03 16:23:00 Views：5439

Hast highly accelerated temperature and humidity pressure test (HAST) is a highly accelerated, temperature and humidity based reliability test method for electronic components. Environmental parameters, hast is also known as pressure test (PCT) or unsaturated pressure test (uspct). The purpose is to evaluate the test sample by increasing the water vapor pressure in the laboratory to a certain moisture resistance. Much higher than the partial water vapor pressure inside the sample. This process temporarily accelerates the infiltration of water into the sample.

Principle of accelerated aging test (HAST)

Hast, also known as pressure test / PCT test, unsaturated pressure test / uspct. The reliability test method of electronic components is mainly evaluated by changing the basic parameters such as temperature, humidity and pressure, that is, high temperature, high pressure and high humidity, increasing the water vapor pressure to a certain extent, improving the environmental stress and accelerating the aging of products.

Application field of accelerated aging test (HAST)

Hast aging test is widely used for accelerated aging life test of IC semiconductors, connectors, circuit boards, magnetic materials, polymer materials, EVA, photovoltaic modules and other industry-related products. The purpose of accelerated life test is to improve the environmental stress (such as temperature) and working stress (voltage, load, etc. applied to the product), speed up the test process and shorten the life test time of the product or system. It is used to investigate and analyze when the problems of friction and service life of electronic components and mechanical parts occur, what shape the fault distribution function of service life is, and analyze the reasons for the rise of failure rate.

Test category of accelerated aging test (HAST)

1. Low temperature step stress test

2. High temperature step stress test

3. Rapid thermal cycle test

4. Vibration step stress test

5. Comprehensive stress test

6. Working stress test

Purpose of accelerated aging test (HAST)

In order to improve the environmental stress (such as temperature) and working stress (voltage, load, etc. applied to the product), speed up the test process and shorten the life test time of the product or system, the test time used to determine the quality of finished products is also increased accordingly. In order to improve the test efficiency and reduce the test time.

Accelerated aging test (HAST) test standard

Hast high accelerated aging test is to improve environmental stress (such as temperature) and working stress (voltage, load, etc. applied to the product), speed up the test process and shorten the life test time of the product or system. Therefore, the test time used to determine the quality of finished products has been increased accordingly, so as to improve the test efficiency and reduce the test time.

1. GB / t3512-2014 vulcanized rubber or thermoplastic film rubber hot air accelerated and heat resistance test

2. GB / t3511-2008 weather resistance of vulcanized rubber or thermoplastic rubber

Paints and varnishes -- artificial weathering and exposure to artificial radiation (filtered xenon arc radiation)

4. GB / t16585-1996 vulcanized rubber artificial climate aging (fluorescent ultraviolet lamp) test method

5. Iso9142-2003 guide for selection of standard laboratory aging conditions for testing adhesive parts