ST-SD301 is a surge protection device for single channel RS485 signal, which is designed

with reference to IEC61643-21:2000. The default working voltage is 5V, while the maximum

sustaining working voltage is 6V. The voltage protection is less than 20V, and it possesses

the following advantages, such as multi-level protection, larger flow capacity, low voltage-limitation,

quick response, high transmission rate, and so on. It is suitable to be used for protection in the following fields,.

 

 

 

· Standard: GB/T18802.21-2004/IEC61643-21:2000 Nation Standard；
· Signal: RS485 or 5V signal(transmission rate less than 10Mbps)；
· Feature: Multi-function and multi-level over-voltage protection，large flow capacity，

low voltage limitation，quick response，little insertion loss；
· Ground manner: Extension cable touches the ground directly；
· Design: Clear and scientific mark，easy to recognize，All-aluminum-made cover，

compact design，easy installation.

 

 

Item

Description

Control Signal

Rated Operational Voltage

5V

Max Continuous Operational Voltage

6V

Nominated Discharge Current (8/20µs)

5KA

Max Discharge Current(8/20µs)

10KA

Compact Limited Voltage (10/700µs)

<20V

Resistance

≥0.4MΩ

Inserting Loss

≤0.5dB

Standing Wave Ratio

≤1.2

Transmission Rate

<2Mbps

Reacting Time

≤1ns

Environment

Working Temperature

-20～55℃

Storage Temperature

-40～70℃

Humidity

0-95%

Physical Properties

N.W.

49g

Size

65mm×25mm×25mm

Shell

Aluminum

Stability

MTBF

>30000hr