Sankosha SD4-Series GDT

SD4-Series
Sankosha Gas Discharge Tubes (GDT) - Surge Arresters

Applications:

Cable Telephony Products

Modems/Cable Modems

Broadband/CATV/Coaxial Protectors

xDSL Modems and Peripherals

Building Entry/Outside Plant

Transient Voltage Surge Suppression (TVSS)

Features:

4.4 x 3.5 mm Footprint

UL 497B Recognized (File E140906)

High Surge Current Rating

Non-Radioactive

RoHS Compliant (100% Lead-Free)

ISO 9001 and ISO 14001 Certified

Low Capacitance ≤ 0.5pF

Proven Performance

Part Number	DC Breakdown Voltage⁽¹⁾	Impulse Breakdown Voltage	Capacitance⁽²⁾	Insulation Resistance⁽³⁾	DC Holdover Voltage⁽⁴⁾	Impulse Life	Impulse Discharge Current (8/20μsec)	AC Discharge Current (50Hz)
Part Number	100V/s	1kV/μs	Capacitance⁽²⁾	Insulation Resistance⁽³⁾	DC Holdover Voltage⁽⁴⁾	Impulse Life	Impulse Discharge Current (8/20μsec)	1 Second
SD4-75	75V	≤ 600V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 52V	8/20μs 100A 1000 Times	2.5 kA 1 Time	5A 1 Time
SD4-90	90V	≤ 600V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 52V	8/20μs 100A 1000 Times	2.5 kA 1 Time	5A 1 Time
SD4-145	145V	≤ 600V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 80V	8/20μs 100A 1000 Times	2.5 kA 1 Time	5A 1 Time
SD4-200	200V	≤ 600V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 135V	8/20μs 100A 1000 Times	2.5 kA 1 Time	5A 1 Time
SD4-200SVSS	200V	≤ 800V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 135V	8/20μs 100A 1000 Times	2.5 kA 1 Time	5A 1 Time
SD4-230	230V	≤ 650V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 135V	10/1000μs 50A 300 Times	2.5 kA 1 Time	5A 1 Time
SD4-350 ⁽⁵⁾	350V	≤ 700V	≤ 0.5 pF	≥ 10,000 MΩ	≤ 135V	10/1000μs 50A 300 Times	2.5 kA 1 Time	5A 1 Time

Notes:

DC Breakdown Voltage Ranges are � 20%
Capacitance measured at 1 MHz for all part numbers
Insulation Resistance measured at:
DC 50V for the SD4-75, SD4-90, and SD4-145
DC 100V for the SD4-200, SD4-200SVSS, SD4-230, and SD4-350
DC Holdover Voltage measured in accordance with the ITU-T K.12.
The SD4-350 is not currenly UL Recognized.
Available on tape and reel