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Mechanical and Environment Testing

Test Description

Test Condition

High Temperature

70°C with random humidity for 240 hours

Low Temperature

-20°C with random humidity for 240 hours

Humidity

40°C with 90% to 95% relative humidity for 240 hours

Vibration

1.5 mm movement modulated at 10 to 55 Hz for 2 hours

Drop Test

75 cm free fall onto 40 mm thick board, 10 cycles

Temperature Cycle Test

-20°C to 70°C, 5 cycles (refer to Temperature Cycle Test Graph)

After 4 hours at rest, resonant frequency shall be ±10% of original value with capacitance ±20% of original value.

Temperature Cycle Test Graph

APS4812B-LW100-R

48mm Piezo Speaker