Sankosha SD8-Series Gas Discharge Tubes (GDT) – Surge Arresters | Kouei Japan Trading

Sankosha SD8-Series Gas Discharge Tubes (GDT) – Surge Arresters

Manufacturer: Sankosha., Inc
Model: SD8-Series

Features:

Applications:

Part Number	DC Breakdown Voltage⁽¹⁾	Impulse Breakdown Voltage		DC Holdover Voltage V⁽³⁾	Impulse Life (10/1000μs 500A)	Impulse Discharge Current (8/20μs)		AC Discharge Current (50Hz)
Part Number	100V/s	100V/μs	1kV/μs	DC Holdover Voltage V⁽³⁾	Impulse Life (10/1000μs 500A)	1 Time	10 Times⁽⁴⁾	9 Cycles 1 Time	1 Second
SD8-75	75V	≤ 500V	≤ 700V	≤ 52V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
SD8-90	90V	≤ 500V	≤ 700V	≤ 52V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
SD8-145	145V	≤ 500V	≤ 700V	≤ 80V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
SD8-230	230V	≤ 600V	≤ 750V	≤ 135V	300 Times	10 kA	5 kA	65 A	10A, 5 Times
SD8-250	250V	≤ 600V	≤ 800V	≤ 135V	300 Times	10 kA	5 kA	65 A	10A, 10 Times
SD8-300	300V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
SD8-350	350V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
SD8-400	400V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
SD8-470	470V	≤ 700V	≤ 850V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times
SD8-600	600V	≤ 800V	≤ 1000V	≤ 150V	500 Times	10 kA	5 kA	65 A	10A, 10 Times

Notes:

DC Breakdown Voltage Ranges are:
± 20% for SD8-75 and SD8-90
± 15% for SD8-145, SD8-230, SD8-250, SD8-300, SD8-350, SD8-400, SD8-470, and SD8-600
Insulation Resistance for all parts in the SD8-Series is ≥ 10,000 MΩ measured at:
DC 50V for the SD8-75, SD8-90 and SD8-145
DC 100V for the SD8-230, SD8-250, SD8-300, SD8-350 and SD8-400
DC 250V for the SD8-470 and SD8-600
DC Holdover Voltage measured in accordance with the ITU-T K.12 or the IEEE C62.31-1987 Test Circuit
5 times each polarity
Capacitance measured at 1 MHz for all part numbers is ≤ 1.0 pF
Custom Configurations Available