Owner's manual

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BESTAR ELECTRONICS INDUSTRY CO.,LTD

No.199 HuangHe West Road.New district,changzhou,

jiangsu Province,P.R.China

Tel:86-519-8222567 Fax:86-519-8222551

Http:www.be-star.com

E-mail: wu@be-star.com, info@be-star.com

For conform to the European Union Directive on the Restriction of Hazardous Substances(RoHS), this type of

productions forbid use all the hazardous substances as follow:

Lead

Cadmium

Mercury

Hexavalent chromium

Polybrominated biphenyls (PBB)

Polybrominated diphenyl ethers (PBDE)

1.Characteristics

2.Appearance

3.Environment Test

4.History change record

Approved by

Checked by

Drawn by

Customer approved

Approval:

Issue Date

06/06/06

Product No.

Issue No. BS/TEM01.074A

BeStar Model Name

Customer P/N

Customer

BCM9745NC-W82Plug

SPECIFICATION FOR

ELECTRET CONDENSER MICROPHONE

Summary of content (6 pages)

PAGE 1
SPECIFICATION FOR ELECTRET CONDENSER MICROPHONE Customer Customer P/N BeStar Model Name BCM9745NC-W82Plug Product No. Issue No. BS/TEM01.074A Issue Date 06/06/06 Approval: 1.Characteristics 2.Appearance 3.Environment Test 4.
PAGE 2
5 6 4 2 3 1 BCM9745NC-W82Plug H H 1. Characteristics Test Condition (Vs=2.5V No. G E Item Specifications 1 Sensitivity -42±2dB(0dB=1V/Pa,1kHz) 2 Impedance Less than 2.2KΩ at1kHz 3 Directional Noise concelling 4 S/N Ratio 5 Max. Input Sound Level 100dB S.P.L 6 7 Frequency Response Rate Voltage 20Hz-10kHz 2.5V 8 Operating Voltage 9 Decreaing Voltage characteristic G more than40dB(0dB=1V/Pa,1kHz) F 1.5-10V -3dB(Vs=1.
PAGE 3
6 5 4 2 3 1 BCM9745NC-W82Plug H H 2.Appearance Tolerances: ±0.2mm mesh 9.7 G 4.5 G F - + E E Black 28AWG UL1061 Red D 82±5 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 F D C C Buchse 02 KR-8M JST B A B A 06/06/06 王丽娟 Rev. Date Drawn Note Date: 06/06/06 Drawn by: 王丽娟 Checked by: 程久生 Approved by: 郭敏 BESTAR ELECTRONICS INDUSTRY CO.,LTD www.
PAGE 4
5 6 4 2 3 1 BCM9745NC-W82Plug H H Measurement Circuit: Terminal 1 G C:1μF PEF G Output Power Supply Vs ECM unit RL:2.2KΩ - Earth Terminal 2 MIC.CASE 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 F F Cautions: E 1.The soldering copper of a smaller type of less than 20W shall be applied. 2.
PAGE 5
6 5 4 2 3 1 BCM9745NC-W82Plug H H 3.Environment Test 3.1 3.2 G 3.3 High temp.life test Temperature Duration Low temp.life test Temperature Duration Temperature cycle test Cycles F -25°C +70 C 200hrs G -25 C 200hrs 5 +70°C +20°C +20°C F 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 30min 10min 30min 10min 3.
PAGE 6
5 4 2 3 1 BCM9745NC-W82Plug H H 4. History change record Change Items version No. Before G Drawn 06/06/06 王丽娟 Approved G A 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 Date After 郭敏 F F E E D D C C B B Date: A A 06/06/06 王丽娟 Date Drawn REV. Note 06/06/06 Drawn by: 王丽娟 Checked by: 程久生 Approved by: 郭敏 BESTAR ELECTRONICS INDUSTRY CO.,LTD www.