SPM0204UD5 데이터 시트보기 (PDF) - Unspecified

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SPM0204UD5

ULTRASONIC ACOUSTIC SENSOR

Unspecified 

SPM0204UD5

12. RELIABILITY SPECIFICATIONS

Note: After test conditions are performed, the sensitivity of the microphone shall not deviate

more than 3dB from its initial value.

Test

Description

Thermal Shock

Microphone unit must operate when exposed to air-to-air thermal shock 100 cycles,

from –40ºC to +125ºC. (IEC 68-2-4),

High Temperature Storage Microphone unit must maintain sensitivity after storage at +105ºC for 1,000 hours.

Test

(IEC 68-2-2 Test Ba)

Low Temperature Storage Microphone unit must maintain sensitivity after storage at –40ºC for 1,000 hours.

Test

(IEC 68-2-1 Test Aa)

High Temperature Operating Microphone unit must operate within sensitivity specifications for 1,000 hours at

Test

105ºC. (IEC 68-2-2 Test Ba)

Low Temperature Operating Microphone unit must operate within sensitivity specifications for 1,000 hours at –

Test

40ºC. (IEC 68-2-1 Test Aa)

Humidity Test

Vibration Test

Electrostatic Discharge

Reflow

Mechanical Shock

Tested under Bias at 85ºC/85% R.H. for 1,000 hours. (JESD22-A101A-B)

Microphone unit must operate under test condition: 4 cycles, from 20 to 2,000 Hz in

each direction (x,y,z), 48 minutes, using peak acceleration of 20 G (+20%, -0%).

(MIL 883E, method 2007.2, A)

Tested to 8kV direct contact discharge to the case and tested to 2kV direct contact

to I/O terminals.

Microphone is tested to 5 passes through reflow oven, with microphone mounted

upside-down under conditions of 260ºC for 30 seconds maximum.

Microphone must operate after exposure to shock test of 10,000 G per IEC 68-2-27,

Ea.

Knowles Acoustics,

a division of Knowles Electronics, LLC

Revision: PRELIMINARY

Page 8 of 9

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