ShenZhen
HuaXinAn Electronics Co.,Ltd
SMB Series
Surge Absorbers
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
DC Spark-Over Voltage Vs(V)
Part Number
Nominal value
（min-max)
Test voltage
SMB-141N
SMB-181N
SMB-201M
SMB-251M
SMB-301M
SMB-401M
SMB-471M
SMB-501M
SMD-901M
SMB-901M
140V
180V
200V
250V
300V
400V
470V
500V
900V
900V
(98V-182V)
(126V-234V)
(160V-240V)
(200V-300V)
(240V-360V)
(320V-480V)
（400V-560V）
(400V-600V)
(720V-1080V)
(720V-1080V)
DC250V
>1000MΩ
1PF(MAX)
1000A
DC100V
>1000MΩ
8/20us
1000A
10times
IR (MΩ)
Insulation Resistance
Capacitance
of
electrostatic
1KHz-6V(PF)
Surge current
capacity 8/20us
Surge Life
Test
4 Dimension(mm)：
Model Series
SMB
①
Φ2.6±0.3
②
4.2±0.4
③
0.4±0.2
④
Φ2.7±0.3
⑤
0.5 Max
1
Revised:February 25,2014
www.huaandz.com
ShenZhen
Huaan Electronic Co.,Ltd
SMB
Series
5 Marking of colour code：
NO
Fast Delivery Time
SMB Series Photo
6 Part Number Description:
SMB
501
M
DC Spark-Over Voltage
Accuracy ±20
DC Spark-Over Voltage
500V
Length 5.0mm
Dimension：Diameterφ2.6
7 Packing Quantity (1500PCS)
Shen Zhen HuaXinAn Electronics Co.,Ltd
Revised:February 25,2014
sales@huaandz.com
abc0734@126.com
Tel:+86-755-27465585
2
www.huaandz.com
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