For more information, please visit the
product page.
date
04/2015
page
1 of 4
PART NUMBER: CME-1538-100LB
DESCRIPTION: ELECTRET CONDENSER
MICROPHONE
SPECIFICATIONS
parameter
directivity
sensitivity
operating voltage
output impedance
sensitivity reduction
frequency
current consumption
signal to noise ration
operating temperature
storage temperature
dimensions
weight
material
terminal
RoHS
dustproof/waterproof level
Notes:
conditions/description
omnidirectional
f= 1 KHz, 1Pa 0 dB= 1 V/Pa
f= 1 KHz, 1Pa
f= 1 KHz, 1Pa Vs=2 V dc to 1.5 V dc
min
-41
typ
-38
2
2.2
-3
max
-35
10
units
dB
Vdc
kΩ
dBA
20
Vs=2 V dc RL=2.2 kΩ
f= 1 KHz, 1 Pa A weighted
-30
-30
ø4 x H1.5 mm
58
20,000
0.5
80
80
0.36
Hz
mA
dBA
°C
°C
g
brass (Au plating)
wire type
2011/65/EU
IP67, IEC standard 529 edition 2.0 (1989)
1. We use the “Pascal (Pa)” indication of sensitivity as per the recomendation of I.E.C. (International Electrotechnical Commission). The sensitivity of “Pa” will increase
20dB compared to the “ubar” indication. Example: -60dB (0dB = 1V/ubar) = -40dB (1V/Pa)
2. All specifications measured at 5~35°C, humidity at 45~85%, under 86~106kPa pressure, unless otherwise noted.
APPEARANCE DRAWING
unit: mm
tolerance: ±0.2
wire: UL1571 32 AWG
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2383
www.cui.com
For more information, please visit the
product page.
date
04/2015
page
3 of 4
PART NUMBER: CME-1538-100LB
DESCRIPTION: ELECTRET CONDENSER
MICROPHONE
MECHANICAL CHARACTERISTICS
item
soldering heat resistance
PCB wire pull strength
vibration test
test condition
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.
The force of 4.9 N is applied for 30 sec. to double lead wire.
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 microphone without packaging is subjected to 3 drops on
each axis from the height of 100 cm onto a 20 mm thick wooden
board.
evaluation standard
90% min. stripped wires should be wet
with solder (except edge of terminal).
No damage or cutting off.
The sensitivity should be within
±3dB compared with the initial
measurement.
drop test
ENVIRONMENT TEST
item
high temperature test
low temperature test
humidity test
temperature cycle test
test condition
After being placed in a chamber at +80°C for 1 hour.
After being placed in a chamber at -30°C for 1 hour.
After being placed in a chamber at +40°C and 90 ±5% RH for
240 hours.
The part will be subjected to 10 cycles. One cycle will consist of:
+80
+25
-30
1hr
0.5hr
1hr
0.5hr
1hr
0.5hr
1hr
+25
evaluation standard
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.
5.5
hrs
TEST CONDITIONS
standard test conditions
judgement test conditions
a) Temperature: +5 ~ +35°C
a) Temperature: +25 ±2°C
b) Humidity: 45 ~ 85%
b) Humidity: 60 ~ 70%
c) Pressure: 860 ~ 1060 mbar
c) Pressure: 860 ~ 1060 mbar
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2383
www.cui.com
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