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

Manufacturer: Sankosha., Inc
Model: SD4-Series

Features

SD4-Series

  • 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

Applications:

  • Cable Telephony Products
  • Modems/Cable Modems
  • Broadband/CATV/Coaxial Protectors
  • xDSL Modems and Peripherals
  • Building Entry/Outside Plant
  • Transient Voltage Surge Suppression (TVSS)
Part
Number		DC Breakdown Voltage(1)Impulse Breakdown VoltageCapacitance(2)Insulation Resistance(3)DC Holdover Voltage(4)Impulse LifeImpulse Discharge Current (8/20μsec)AC Discharge Current (50Hz)
100V/s1kV/μs1 Second
SD4-7575V≤ 600V≤ 0.5 pF≥ 10,000 MΩ≤ 52V8/20μs 100A
1000 Times		2.5 kA
1 Time		5A
1 Time
SD4-9090V≤ 600V≤ 0.5 pF≥ 10,000 MΩ≤ 52V8/20μs 100A
1000 Times		2.5 kA
1 Time		5A
1 Time
SD4-145145V≤ 600V≤ 0.5 pF≥ 10,000 MΩ≤ 80V8/20μs 100A
1000 Times		2.5 kA
1 Time		5A
1 Time
SD4-200200V≤ 600V≤ 0.5 pF≥ 10,000 MΩ≤ 135V8/20μs 100A
1000 Times		2.5 kA
1 Time		5A
1 Time
SD4-200SVSS200V≤ 800V≤ 0.5 pF≥ 10,000 MΩ≤ 135V8/20μs 100A
1000 Times		2.5 kA
1 Time		5A
1 Time
SD4-230230V≤ 650V≤ 0.5 pF≥ 10,000 MΩ≤ 135V10/1000μs 50A
300 Times		2.5 kA
1 Time		5A
1 Time
   SD4-350 (5)350V≤ 700V≤ 0.5 pF≥ 10,000 MΩ≤ 135V10/1000μs 50A
300 Times		2.5 kA
1 Time		5A
1 Time

 

Notes:
  1. DC Breakdown Voltage Ranges are ± 20%
  2. Capacitance measured at 1 MHz for all part numbers
  3. 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
  4. DC Holdover Voltage measured in accordance with the ITU-T K.12.
  5. The SD4-350 is not currenly UL Recognized.
  6. Available on tape and reel

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