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Semtech TDS2621LP Transient Diverting Suppressors (TDS)

Semtech TDS2621LP Transient Diverting Suppressors (TDS) are designed to provide high-energy electrical overstress (EOS) protection with superior clamping and temperature characteristics when compared to standard TVS devices. The Semtech TDS2621LP devices use a surge-rated FET as the main protection element. During an EOS event, transient voltage increases beyond the rated breakdown voltage of the device. The FET then switches on and conducts a transient current to ground. The TDS clamping voltage is nearly constant across the rated peak pulse current range due to the extremely low ON Resistance [RDS(on)] of the FET. Lower clamping voltage at maximum peak pulse current makes the TDS components more suitable for protecting sensitive integrated circuits (ICs), when compared to standard TVS diodes.

TDS2621LP TDS are designed to protect voltage bus or data lines with the maximum operating voltage of 26.4V. The series is rated for a high-energy transient current up to 24A (tp = 8/20μs) and may be used to meet the common industrial voltage surge standard of ±1kV per IEC 61000-4-5 (RS = 42Ω, CS = 0.5μF). Available in a small DFN 1.6mm x 1.6mm x 0.55mm 2-lead package, the Semtech TDS2621LP devices represent significant board space savings over traditional SMAJ and SMBJ packaged devices.

Features

  • High ESD withstand voltages - ±20kV (contact) and ±25kV (air) per IEC 61000-4-2
  • High peak pulse current capability of 24A (tp = 8/20μs), 1kV (tp = 1.2/50μs, RS = 42Ω ) per IEC 61000-4-5
  • Protects one I/O or power line
  • 26.4V maximum working voltage
  • Solid-state technology
  • UL 94V-0 molding compound flammability rating
  • 2-lead DFN package, 1.6mm x 1.6mm x 0.55mm
  • Lead-free, Halogen-free, and RoHS/WEEE compliant

Applications

  • USB Type-C®
  • VBUS lines
  • Internet of Things (IoT) devices

Specifications

  • 840W maximum peak pulse power (tP = 8/20µs)
  • Peak pulse current
    • 24A maximum (tP = 8/20µs)
    • 1.3A maximum (tP = 10/1000µs)
  • 26.4V maximum reverse stand-off voltage
  • 31V to 33.2V reverse breakdown voltage range
  • 0.6V typical forward voltage
  • 60nA maximum reverse leakage current, 5nA typical
  • 35V maximum clamping voltage, 32.7V typical
  • 32mΩ typical dynamic resistance
  • 86pF typical junction capacitance
  • -40°C to +125°C operating temperature range
  • -55°C to +150°C junction temperature range

Functional Block Diagram

Block Diagram - Semtech TDS2621LP Transient Diverting Suppressors (TDS)
發佈日期: 2025-10-09 | 更新日期: 2025-10-16