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

For Axial Leaded Version (U-Series) - Click Here
Applications:

  • Cable Telephony Products
  • Modems/Cable Modems
  • Broadband/CATV/Coaxial Protectors
  • xDSL Modems and Peripherals
  • Building Entry/Outside Plant
  • Transient Voltage Surge Suppression
  • Features:

  • UL 479B Recognized (File E140906)
  • High Surge Current Rating
  • Non-Radioactive
  • Surface Mount
  • Small Size
  • RoHS Compliant (100% Lead-Free)
  • ISO 9001 and ISO 14001 Certified
  • Low Capacitance ≤ 1.0pF

  • 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)
    100V/s 100V/μs 1kV/μs 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:
    1. 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
    2. 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
    3. DC Holdover Voltage measured in accordance with the ITU-T K.12 or the IEEE C62.31-1987 Test Circuit
    4. 5 times each polarity
    5. Capacitance measured at 1 MHz for all part numbers is ≤ 1.0 pF
    6. Custom Configurations Available
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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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