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Environmental And Reliability Test Methods

Mar 4

INTRODUCTION

For its lengthy product life cycle, a well-designed product should function correctly in a wide variety of environmental conditions in terms of temperature and humidity.

Temperature: Environmental conditions for consumer electronics range from -20 to 60 degrees Celsius.

Relative humidity (RH) is used to measure humidity.

AN IN-DEPTH EXAMINATION

High-Temperature Storage Is Currently Unavailable

  • This test mimics the circumstances that exist when items are packaged and transported, such as by sea, land, or air.
  • For example, an electrical product placed on top of a shipping container is continually exposed to the sun and has a very high ambient temperature.
  • This test usually lasts several hundred hours.
  • The gadget must be free of any mechanical, aesthetic, electrical, or functional damage to pass the test.

 

Storage At Low Temperature - Inactive

  • This test mimics the circumstances that exist when items are packaged and transported, such as by sea, land, or air.
  • Take, for example, an electrical device in flight cargo with a frigid ambient temperature.
  • This test usually lasts several hundred hours.
  • The gadget must be free of any mechanical, aesthetic, electrical, or functional damage to pass the test.

 

Non-Operational Cycling Test

  • Thermal: A short term thermal cycling length of a few hundred cycles from the lowest temperature to the greatest temperature settings, such as -20 C to 60 C, was performed in this test.
  • Temperature and Humidity: To evaluate the electronic product under a combination of humidity and temperature, a few cycles of thermal cycling with humidity control are utilized.
  • In general, we predict the worst boundary conditions to be dry and cold (-20 C @ 5% RH), room and normal humid condition (25 [email protected] 25% RH), and hot and humid condition (60 [email protected] 95 percent RH), using room temperature as the beginning state.
  • The gadget must be free of any mechanical, aesthetic, electrical, or functional damage to pass the test.

 

Shocks From The Heat

  • Rapid temperature changes from the lowest to the highest temperatures enable for the detection of mechanical and electrical component problems. This is usually done using a PCBA.
  • The PCBA must pass all board level functional/circuit testing and be able to be assembled into the original enclosure to meet the passing requirements.
  • Application:
  • This is commonly used for portable devices that experience fast environmental change (for example, taking a call on a cordless phone from a warm house to the cold outside in the winter).

 

Standards:

 

CONCLUSION AND SUMMARY

  • Environmental Reliability is a test that puts electronic equipment through its paces under various temperature and humidity conditions.
  • Temperature is defined as the difference between the lowest and highest temperature conditions.
  • At each temperature, relative humidity (RH) is used to describe humidity.
  • It's a test of the device's non-operational status under different demanding situations.
  • Thermal and humidity cycling, as well as thermal shock testing, are examples of stress tests.

 

Environmental testing are required for electronic devices to function in populated areas across the world.