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Test Techniques For The Environment And Reliability

Sep 21

INTRODUCTION

A well-designed product should work well in a range of environmental conditions, including temperature and humidity, during the course of its extended product life cycle.

Temperature: The ambient temperature for consumer electronics is between -20 and 60 degrees Celsius.

To measure humidity, use relative humidity (RH).

 

A DETAILED ANALYSIS

Currently Unavailable High-Temperature Storage

  • This test simulates the conditions that present when goods are packed and shipped, whether by sea, land, or air.
  • Consider an electrical product that is put on top of a shipping container, which is constantly exposed to the sun and has a highly warm environment.
  • Numerous hundred hours are often spent on this exam.
  • To pass the test, the device must be free of any functional, electrical, cosmetic, or mechanical damage.


Storage Active When At A Low Temperature

  • This test simulates the conditions that present when goods are packed and shipped, whether by sea, land, or air.
  • Consider an electrical equipment that is in flight cargo and has a very cold environment.
  • Numerous hundred hours are often spent on this exam.
  • To pass the test, the device must be free of any functional, electrical, cosmetic, or mechanical damage.


Cycling Test Not In Use

  • Thermal: In this test, a few hundred short-term thermal cycles were done between the lowest and highest temperature settings, such as -20 C and 60 C.
  • Temperature and Humidity: A few thermal cycling cycles with humidity control are used to test the electrical device in a humid and hot environment.
  • The worst boundary conditions, taking room temperature as the starting point, are often predicted to be the following: dry and cold (-20 C @ 5% RH), room and normal humid condition (25 C @ 25% RH), and hot and humid (60 C @ 95 percent RH).
  • To pass the test, the device must be free of any functional, electrical, cosmetic, or mechanical damage.


Shockwaves Of The Heat

  • The ability to identify mechanical and electrical component issues is made possible by rapid temperature swings from the coldest to the warmest temperatures.
  • Typically, a PCBA is used for this.
  • To achieve the passing standards, the PCBA must successfully complete all board-level functional/circuit testing and be able to be put together within the original container.
  • Application: This is often utilized with portable technology that encounters rapid environmental change (for example, taking a call on a cordless phone from a warm house to the cold outside in the winter).


IEC 60068-2 outlines the environmental and reliability test procedures for electronic requirements.


A SUMMARY AND CONCLUSION

  • Environmental Reliability testing puts electrical devices to the test in a variety of temperature and humidity scenarios.
  • The difference between the temperatures at its lowest and highest points is what is known as temperature.
  • The term relative humidity (RH) is used to describe humidity at each temperature.
  • It tests the device's inability to function under a variety of demanding circumstances.
  • Examples of stress tests include thermal shock testing, humidity cycling, and thermal cycling.


Electronic gadgets must undergo environmental testing before they may be used in inhabited regions worldwide.