3325-383-B1

1  Electrical performance index

Standard conditions Basic test conditions

Room temperature: 5-35 ℃

Temperature: 20 plus or minus 2 ℃

Normal humidity: 45-85%

Humidity :67% to 63

Normal air pressure: 86-106 kPa

Normal air pressure: 86-106 kPa

  2 Application circuit

3  Reliability Test

All tests shall be carried out in the same batch of tests in the sequence listed. The sensitivity should be within ±3dB of the initial sensitivity after 2 hours of restoration at 20℃

Temperature test: Sensitivity should be within ±3 dB of the initial value after 200 hours of exposure at 60°C. After 200 hours of exposure at -25°C, the sensitivity should be within ±3 dB of the initial value

Humidity test: After exposure for 200 hours at 60±3℃ and 90~95% relative humidity, the sensitivity should be within ±3 dB of the initial value

Temperature cycle test: 30 minutes of exposure at -25°C, 10 minutes at 20°C, 30 minutes at 60°C, and 10 minutes at 20°C. Sensitivity should be within the initial value ±3 dB after 15 cycles

Vibration test: To ensure that the vibration does not affect the use, 10 Hz to 50 Hz at a full amplitude of 1.52 mm for 1 minute, at 3 large angles for 2 hours.

Drop test: In order to ensure that the test microphone in the package falls off and does not affect its use, the 3 sides of the package are dropped from a height of 1.5 meters on the cement floor for 12 cycles

Electrostatic protection: The test microphone must discharge between each ESD exposure point (contact point :±6KV, air :±8KV)

4 Mechanical properties

Plate surface cleaning pressure is limited to 0.3Mpa

    5. Packaging (Unit :mm)