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Semtech uClamp3381P

Semtech uClamp3381P

High Power µClamp® 3.3V ESD & Surge Protection

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µClamp® TVS diodes are designed to protect sensitive electronics from damage or latch-up due to EOS, lightning, CDE, and ESD. They feature large cross-sectional area junctions for conducting high transient currents. These devices offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage, and no device degradation.

µClamp®3381P features extremely good protection characteristics highlighted by high surge current capability (25A, tp=8/20us), low peak ESD clamping voltage, and high ESD withstand voltage (+/-30kV contact per IEC 61000-4-2). Typical dynamic resistance is among the industry’s best at 0.025 Ohms. Each device will protect one data or power line operating at 3.3 Volts. 

Watch an overview video of the µClamp3381P


  • Transient protection for VBus and data lines to
    • IEC 61000-4-2 (ESD) ±30kV (air), ±30kV (contact)
    • IEC 61000-4-4 (EFT) 40A (5/50ns)
    • IEC 61000-4-5 (Lightning) 25A (8/20µs)
  • Protects one line
  • Low ESD clamping voltage
  • Working voltage: 3.3V
  • Low leakage current
  • Extremely low dynamic resistance: 0.025 Ohms (Typ)
  • Solid-state silicon-avalanche technology


  • Optical Modules
  • 3.3V VBus Protection
  • LCD TV
  • Tablet PC
  • Instrumentation
  • CCTV Cameras


  • SGP1006N2: 1.0 x 0.6 x 0.5mm

Order Codes

  • µClamp3381P.TFT: Pb-Free, Halogen Free, RoHS/WEEE Compliant, 15,000 pcs.
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