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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)
    100V/s 1kV/μs 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:
    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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    Sankosha U.S.A., Inc.,    406 Amapola Avenue, Suite 135,    Torrance, CA 90501,    USA
    Phone Toll Free: (888) 711-2436    Phone: (310) 320-1661    Fax: (310) 618-6869    Email: sales@sankosha-usa.com
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