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Semtech TClamp3312N

Semtech TClamp3312N

Low Capacitance TransClamp® Surge Protection for Ethernet Interfaces

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TClamp®3312N is specifically designed to provide secondary surge and ESD protection for Ethernet and telecom interfaces. It integrates low capacitance, surge-rated steering diodes with a high power transient voltage suppressor (TVS) to provide up to 120A (tp=8/20us) of lightning surge protection. Capacitance is limited to 8pF maximum from line-toline to ensure correct signal transmission on high-speed lines.


  • Transient Protection to
    • Bellcore 1089 (Intra-Building) 120A (8/20μs)
    • IEC 61000-4-2 (ESD) 30kV (Air), 30kV (Contact)
    • IEC 61000-4-4 (EFT) 4kV (5/50ns)
    • IEC 61000-4-5 (Lightning) 120A (8/20μs)
  • Small SLP package saves board space
  • Working Voltage Options: 2.5V and 3.3V
  • Low Capacitance: 8pF Maximum (Line-to-Line)
  • Low Dynamic Resistance
  • Solid-State Silicon-Avalanche Technology


  • 10/100/1000 Ethernet
  • Integrated magnetics
  • Access Equipment
  • Central Office Equipment
  • Customer Premise Equipment


  • 2.6 x 2.6 x 0.60mm - Tape and Reel

Order Codes

  • TClamp2512N.TCT - Pb-Free, Halogen Free, RoHS/WEEE Compliant
  • TClamp3312N.TCT - Pb-Free, Halogen Free, RoHS/WEEE Compliant

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