Test Techniques For The Environment And Reliability

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.