C
6 5
B
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4 3 2
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
D
E
G
F
H
6 5 4 3 2
C
A
1
B
D
E
F
G
H
1
2. Drawing
0
30
330
BCM4520OSF-42
120
60
90
★Angular Response
220
300
270
180
150
210
BCM4520OSF-42
Microphone
filter
Shield Case
ECM unit
FET impedance
Converter
3. Measurement Circuit:
GND
Terminal 2
Output
Power Supply 4.5V
RL=2.2K
Terminal 1
C:10μF
Page:2 of 5
DRG NO:
B/TEM01.119A
+
Terminal 1
Terminal 2
+
-
-
A
Rev. Drawn
Approved by:
Note
Checked by:
Drawn by:
Date:
王焕焕
Date
王焕焕
A
徐 波
王 平
10.06.27
10.06.27
4.5±0.1
2.0±0.2
