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Semtech STF203

Semtech STF203

USB Upstream Port Filter & TVS for EMI Filtering and ESD Protection

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The STF203-15/22/33 is a combination EMI filter and line termination device with integrated TVS diodes for use on upstream 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 upstream USB port.


  • Bidirectional EMI/RFI filtering and line termination with integrated ESD protection
  • ESD protection for USB power (VBUS) and data lines (D+ and D-) to
  • IEC 61000-4-2 (ESD) ± 15 kV (air), ± 8 kV (contact)
  • IEC 61000-4-4 (EFT) 40 A (5/50 ns)
  • Filtering and termination for one USB port
  • Low TVS operating voltage: 5.25 V
  • Low leakage current
  • Small SC70-6L package
  • Solid-state technology


  • USB ports
  • Cellular handsets
  • Personal digital assistants (PDAs)
  • Pagers
  • Digital cameras
  • PC peripherals
  • MP3 players


SC-70 6L

Order Codes

  • STF203-15.TCT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
  • STF203-22.TCT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
  • STF203-33.TCT: Lead-free, RoHS and WEEE compliant, 3000 pcs. Tape & Reel
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