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Surface mounted arrester 3SD4

 

Surface mounted arrester 3SD4

 

This device is a 3-electrodee surface mounted arrester, and the first of its type in Japan. Its use can contribute to making boards more compact and cheaper.
It is a unique product that has been able to combine a compact size with a large withstand performance, something that has conventionally been very difficult to achieve. In additional to ordinary telecommunication lines, it can also be used with broadband.

UL approved (UL497B, File No. E140906)

RoHS compliant

   
 
Product characteristics
 
Item 3SD4-75 3SD4-90 3SD4-145 3SD4-200
DC sparkover voltage 100V/sec 75V±20% 90V±20% 145V±20% 200V±20%
Impulse sparkover voltage 100V/μs <=500V
1kV/μs <=600V
Insulation resistance >=10,000MΩ @DC50V >=10,000MΩ @DC100V
Capacitance <=1.0PF @1MHz
Surge dynamic current interrupting time
ITU-T K.12 Table3
<=150ms
Test 1 Test 2 Test 3
Impulse discharge current Test conditions 8/20μs, 2,500A × 2
Item 1 75V±30% 90V±30% 145V±30% 200V±30%
Item 2 <=700V
Item 3 >=100MΩ
AC discharge current Test conditions AC50Hz 5A × 2, 1sec.
Item 1 75V±30% 90V±30% 145V±30% 200V±30%
Item 2 <=700V
Item 3 >=100MΩ
Impulse life Test conditions 8/20μs, 100A×2, 1,000times
Item 1 75V±30% 90V±30% 145V±30% 200V±30%
Item 2 <=700V
Item 3 >=100MΩ
 
Item 3SD4-230
DC sparkover voltage 100V/sec 230V±20%
Impulse sparkover voltage 100V/μs <=550V
1kV/μs <=650V
Insulation resistance >=10,000MΩ @DC100V
Capacitance <=1.0PF @1MHz
Surge dynamic current interrupting time
ITU-T K.12 Table3
<=150ms
Test 3
Impulse discharge current Test conditions 8/20μs, 5,000A × 2
Item 1 230V±30%
Item 2 <=750V
Item 3 >=100MΩ
AC discharge current Test conditions AC50Hz 5A × 2, 1sec.
Item 1 230V±30%
Item 2 <=750V
Item 3 >=100MΩ
Impulse life Test conditions 10/1000μs, 50A×2, 300times
Item 1 230V±30%
Item 2 <=750V
Item 3 >=100MΩ
 

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