ESD Protection
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Semtech STF201

Semtech STF201

USB Downstream Port Filter & TVS For EMI Filtering and ESD Protection

The STF201-22/30 is a combination EMI filter and line termination device with integrated TVS diodes for use on downstream USB ports.  It is constructed using a proprietary technology that allows passive components and TVS diodes to be integrated in the same package.  Each device will provide termination, filtering, and ESD protection for one downstream USB port.


  • Bidirectional EMI/RFI filtering and line termination with integrated ESD protection
  • ESD protection for USB power (VBUS) and data lines (D+ & D-) to IEC 61000-4-2 Level 4
  • Filtering and termination for two USB data lines
  • Series 22 Ω resistor for impedance matching
  • Low TVS operating voltage (5.25 V)
  • Low leakage current
  • Low capacitance
  • Solid-state technology


  • USB Hubs
  • Portable electronics
  • Printers
  • Monitors
  • Servers, desktop and notebook computers

Order Codes

  • STF201-22.TCT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel