What is environmental reliability testing? What are the main categories?

Date：2023-01-09 15:37:24Views：787

Environmental reliability test is an activity to evaluate the product's ability to complete specified functions under specified environmental conditions and within specified time in order to maintain functional reliability in all environments such as expected use, transportation or storage during the specified service life. In addition, the environmental test can be used to analyze and verify the impact of various environmental factors on product efficiency and the mechanism of action, involving the application fields of electronics, automobiles, rail transit, universe, ships, homes, information technology equipment, etc., which is helpful to help enterprises improve their products, save the cost of product development and production, and improve the quality of products.

Environmental reliability: generally includes climate environmental reliability and mechanical environmental reliability.

1. The impacts of climate and environment reliability include temperature, humidity, light, rain, salt fog, air pressure, etc. The climate environment reliability test items mainly include: high temperature test, low temperature test, rapid temperature change test, cold and hot shock test, constant damp and heat test, alternating damp and heat test, temperature and humidity combined cycle test, light aging test, waterproof test, dustproof test, salt spray test, low air pressure test, etc.

2. Mechanical environment reliability test items mainly include: vibration test, mechanical impact test, collision test and drop test.

3. Including comprehensive environmental reliability test: comprehensive environmental test, such as temperature, humidity and vibration.

Main classification of environmental reliability test:

1. High temperature storage test

According to the requirements of high temperature test standards such as GB/T2423.2, the temperature gradually changes to 65 ℃ (the temperature can be 50 ℃, 85 ℃, 100 ℃, 150 ℃, etc., which can be adjusted flexibly according to specific products). After the temperature stabilizes, it should be maintained for at least 8 hours (16 hours, 24 hours, 72 hours, 96 hours, etc.). The power is not available throughout the whole process. After the test, it should be restored to normal temperature for functional testing, which should conform to the product functional definition.

2. High temperature operation test

According to the requirements of high temperature test standards such as GB/T2423.2, the temperature gradually changes to 55 ℃ (the temperature can be 30 ℃, 40 ℃, 45 ℃, 60 ℃, etc., which can be adjusted flexibly according to specific products). After the temperature stabilizes, it should be maintained for at least 8 hours (16 hours, 24 hours, 72 hours, 96 hours, etc.). The whole process should be powered on. Functional testing should be carried out both during the test run and after the test, it should be restored to normal temperature. The function should meet the product definition.

3. Low temperature storage test

According to the requirements of low temperature test standards such as GB/T2423.1, the temperature gradually changes to - 65 ℃ (the temperature can be - 50 ℃, - 45 ℃, - 30 ℃, - 20 ℃, etc., which can be adjusted flexibly according to specific products). After the temperature is stabilized, it should be maintained for at least 8 hours (16 hours, 24 hours, 72 hours, 96 hours, etc.), and the whole process is not powered on. After the test, it should be restored to normal temperature for functional testing, which should conform to the product functional definition.

4. Low temperature operation test

According to the requirements of low temperature test standards such as GB/T2423.1, the temperature gradually changes to - 40 ℃ (the temperature can be - 50 ℃, - 45 ℃, - 30 ℃, - 20 ℃, etc., which can be adjusted flexibly according to specific products). After the temperature stabilizes, it should be maintained for at least 8 hours (16 hours, 24 hours, 72 hours, 96 hours, etc.). The whole process should be powered on. Functional testing should be carried out both during the test run and after the test, it should be restored to normal temperature, and the function should meet the product definition.

5. Temperature impact test

According to GB/T2423.22 and other temperature cycle and temperature impact standards, low temperature is - 40 ℃, high temperature is 85 ℃, each temperature point stays for 1 hour, and 10 cycles are conducted. No power is supplied during the test, and functional test is conducted after the test. (Temperature value, dwell time and cycle times are optional).

The above is related to the environmental reliability test organized by the wound core detection team. I hope it will be helpful to you. Chuangxin Testing is a professional testing agency for electronic components. At present, it mainly provides integrated circuit testing services such as capacitance, resistance, connector, MCU, CPLD, FPGA, DSP, etc. Specializing in electronic component function testing, electronic component incoming appearance testing, electronic component dissection testing, acetone testing, electronic component X-ray scanning testing, ROHS component analysis testing. Welcome to call, we will serve you wholeheartedly!