For more information, please visit the
product page.
page
date
1 of 4
06/2008
PART NUMBER:
CMC-2742WBL-25L
DESCRIPTION:
electret condenser microphone
SPECIFICATIONS
directivity
sensitivity (S)
sensitivity reduction (∆S-Vs)
operating voltage
output impedance (Zout)
operating frequency (f)
current consumption (I
DSS
)
signal to noise ratio (S/N)
operating temperature
storage temperature
dimensions
weight
material
terminal
RoHS
dustproof and waterproof level
note:
omnidirectional
-42 ±3 dB
f = 1KHz, 1Pa
-3 dB
f = 1KHz, 1Pa
2 V dc (standard), 10 V dc (max.)
2.2 KΩ
f = 1KHz, 1Pa
100 ~ 20,000 Hz
0.5 mA max.
Vs = 2.0 V dc
57 dBA
f = 1KHz, 1Pa
-20 ~ +70° C
-20 ~ +70° C
ø6.0 x 2.7 mm
0.22 g max.
Al
wire type (hand soldering only)
yes
IP57
0dB = 1V/Pa
Vs = 2.0 ~ 1.5 V dc
RL = 2.2KΩ
A-weighted
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)
APPEARANCE DRAWING
tolerances not shown: ±0.3mm
MAX 4.1
2.7 0.2
6.0 0.2
25.0 3.0
(2 PLCS)
UL1571, 30AWG
2.0 0.5
(2 PLCS)
BLACK
Terminal 2
RED
Terminal 1
20050
SW
112
th
Ave. Tualatin, Oregon
97062
phone
503.612.2300
fax
503.612.2383
For more information, please visit the
product page.
page
date
3 of 4
06/2008
PART NUMBER:
CMC-2742WBL-25L
DESCRIPTION:
electret condenser microphone
MECHANICAL CHARACTERISTICS
item
solderability
(connector excepted)
lead wire pull strength
test condition
evaluation standard
Stripped wires of lead wires are immersed in
90% min. stripped wires will be
rosin for 5 seconds and then immersed in a
wet with solder.
solder bath of 270 ±5°C for 3 ±0.5 seconds.
(except the edge of the terminal)
The pull force will be applied to double lead
wire:
No damage or cutting off.
Horizontal 4.9N (0.5kg) for 30 seconds
The part will be measured after applying a
vibration amplitude of 1.5 mm with 10 to 55 Hz
band of vibration frequency to each of the
After any tests, the sensitivity
3 perpendicular directions for 2 hours.
should be within ±3dB compared
The part will be dropped from a height of
to the initial measurement.
1 m onto a 20 mm thick wooden board 3 times
in 3 axes (X, Y, Z) for a total of 9 drops.
vibration
drop test
ENVIRONMENT TEST
item
high temp. test
low temp. test
humidity test
temp. cycle test
test condition
After being placed in a chamber at +70°C for
72 hours.
After being placed in a chamber at -20°C for
72 hours.
After being placed in a chamber at +40°C and
90±5% relative humidity for 240 hours.
The part shall be subjected to 10 cycles. One
cycle will consist of:
evaluation standard
The part will be measured after
being placed at +25°C for 6
hours. After any tests, the
sensitivity should be within ±3dB
compared to the initial
measurement.
TEST CONDITIONS
standard test condition
judgement test condition
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
微控制器 MCU
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