ShenZhen HuaXinAn Electronics Co.,Ltd

Surge Absorbers

SMB Series

1000A

1 Application:

Fast Delivery Time

·For instantaneous over-voltage protection to ADSL,ISDN,MODEM,FAX,TEL,Power Supplies,Alarm systems.

·For instantaneous over-voltage protection to RS485,RS232 port, CATV,video transceiver.

·For instantaneous over-voltage protection to ammeter,water meter auto admin system, etc

2 Features

·Small capacitance and excellent insulation resistance(100MΩ min).

·Small size,No polarity.No dark effect.

·Low electrode capacitance(1pF max).

·Quick response for electrostatic,surge voltage and low limiting voltage.

·Stable for repeated discharge test conditions.

·Operating temperature: -40℃ ~ +85℃. Storage temperature: -40℃ ~ +125℃.

3 Electrical Characteristics

Part Number

DC Spark-Over Voltage Vs(V)

Nominal value （min-max)

Insulation Resistance

Capacitance

of

electrostatic

Surge current

capacity 8/20us

Surge Life

Test

Test voltage IR (MΩ)

1KHz-6V(PF)

SMB-141N

140V

(98V-182V)

DC100V

>1000MΩ

1PF(MAX)

1000A

8/20us

1000A

10times

SMB-181N

180V

(126V-234V)

SMB-201M

200V

(160V-240V)

SMB-251M

250V

(200V-300V)

SMB-301M

300V

(240V-360V)

SMB-401M

400V

(320V-480V)

SMB-471M

470V

（

400V-560V）

SMB-501M

500V

(400V-600V)

DC250V

>1000MΩ

SMD-901M

900V

(720V-1080V)

SMB-901M

900V

(720V-1080V)

4 Dimension(mm)：

Model Series

①

②

③

④

⑤

SMB

Φ2.6±0.3

4.2±0.4

0.4±0.2

Φ2.7±0.3

0.5 Max

1

Revised:February 25,2014

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