date

page

PART NUMBER:

DESCRIPTION:

06/2010

3 of 4

ELECTRET CONDENSER

MICROPHONE

CME-1538-100LB

phone 503.612.2300

fax 503.612.2383 www.cui.com

MECHANICAL CHARACTERISTICS

item

test condition

evaluation standard

soldering heat resistance

Stripped wires are immersed in rosin for 5 seconds and then im-

mersed in solder bath of 270 ±5°C for 3 ±0.5 seconds.

90% min. stripped wires should be wet

with solder (except edge of terminal).

PCB wire pull strength

The force of 4.9 N is applied for 30 sec. to double lead wire.

No damage or cutting off.

vibration test

The microphone should be measured after a vibration amplitude

of 1.5 mm with 10 ~ 55 Hz band of vibration frequency to each of

the 3 perpendicular directions for 2 hours.

The sensitivity should be within

±3dB compared with the initial

measurement.

drop test

The microphone without packaging is subjected to 3 drops on

each axis from the height of 100 cm onto a 20 mm thick wooden

board.

ENVIRONMENT TEST

item

test condition

evaluation standard

high temperature test

After being placed in a chamber at +80°C for 1 hour.

The microphone will be measured

after being placed at +25°C for 6

hours. The value of the oscillation

frequency should be ±10% compared

to the initial measurements. The SPL

should be within ±3dB compared to

the initial measurements.

low temperature test

After being placed in a chamber at -30°C for 1 hour.

humidity test

After being placed in a chamber at +40°C and 90 ±5% RH for

240 hours.

temperature cycle test

The part will be subjected to 10 cycles. One cycle will consist of:

+80

+25

+25

-30

1hr

0.5hr

1hr

0.5hr

1hr

0.5hr

1hr

5.5 hrs

TEST CONDITIONS

standard test conditions

a) Temperature: +5 ~ +35°C

b) Humidity: 45 ~ 85%

c) Pressure: 860 ~ 1060 mbar

judgement test conditions

a) Temperature: +25 ±2°C

b) Humidity: 60 ~ 70%

c) Pressure: 860 ~ 1060 mbar