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Semtech RClamp1255P

Semtech RClamp1255P

Low Capacitance RClamp® Surge Protection for uUSB Interfaces

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RailClamp® TVS arrays are low capacitance ESD protection devices designed to protect high speed data interfaces. The RClamp®1255P provides dedicated surge and ESD protection for uUSB ports. It is designed to replace multiple discrete components in portable applications.

Watch an overview video of the RClamp1255P


  • ESD and surge protection for USB Voltage Bus to
    • IEC 61000-4-2 (ESD) ±30kV (air), ±30kV (contact)
    • IEC 61000-4-5 (Lightning) 100A (8/20μs)
    • IEC 61000-4-4 (EFT) 40A (5/50ns)
  • ESD protection for USB data lines to
    • IEC 61000-4-2 (ESD) ±15kV (air), ±10kV (contact)
  • Protects USB DP, DM, and ID Pins operating up to
  • +/- 4V
  • Protects USB VBus operating up to 12V
  • Low capacitance (<0.50pF) on DP, DM, and ID Pins
  • Low clamping voltage
  • Low dynamic resistance on DP, DM, and ID Pins
  • Solid-state silicon-avalanche technology


  • USB 2.0
  • uUSB


  • SLP2018P6 6L

Order Codes

  • RClamp1255P.TGT: Pb-Free, Halogen Free, RoHS/WEEE Compliant, Tape and Reel
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