ESD Protection
  • RClamp0521Z
  • Ultra Small RClamp® 1-Line ESD protection
  • RClamp0531Z
  • Ultra Small RClamp® 1-Line ESD protection
  • Rclamp0542Z
  • Ultra Small RClamp® 2-Line ESD Protection
  • RClamp0542ZA
  • Femto Farad RailClamp® 2-Line, 300fF ESD Protection
  • RClamp0552T
  • Ultra Low Cap, 2 Line, Bidirectional ESD Protection
  • RClamp0564P
  • Femto Farad RailClamp® 4-Line, 170fF ESD Protection
  • RClamp1255P
  • Low Capacitance RClamp® Surge Protection for uUSB Interfaces
  • RClamp1521PQ
  • Ultra-Low Capacitance 1-Line ESD Protection
Semtech RClamp1821Z

Semtech RClamp1821Z

Ultra Small RailClamp® 1-Line ESD protection

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Not Recommended for New Designs. See Replacement RClamp1851ZA


  • High ESD withstand Voltage: +/-15kV (Contact), +/-18kV (Air) per IEC 61000-4-2
  • Able to withstand over 1000 ESD strikes per IEC 61000-4-2 Level 4
  • Ultra-small 0201 package
  • Protects one data or power line
  • Low reverse current: <5nA typical (VR=18V)
  • Working voltage: +/- 18V
  • Low capacitance: 0.8pF Maximum
  • Solid-state silicon-avalanche technology


  • Cellular Handsets & Accessories
  • Near Field Communication (NFC) lines
  • RF signal lines
  • FM Antenna
  • Digital Lines
  • USB VBus


  • SLP0603P2X3B

Order Codes

  • RClamp1821Z.TNT
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