Texas Instruments TSD05/TSD05C Surge Protection Device

Texas Instruments TSD05/TSD05C Surge Protection Device is designed for clamping harmful transients such as ESD and surge. The TSD05 is unidirectional and the TSD05C is bidirectional. The TSD05/TSD05C is rated to dissipate ESD strikes up to ±30kV (contact and air gap discharge) and also meets the maximum level specified in the IEC 61000-4-2 international standard (Level 4). For surges, the device can clamp 8/20µs surges with peak currents up to 60A (TSD052) and 30A (TSD05C) following the IEC 61000-4-5 standard.

This device also features a 19pF (TSD05) or 4pF (TSD05C) (typical) IO capacitance, enabling it to protect data and high-speed data lines. The low dynamic resistance and low clamping voltage provide system-level protection against transient events. Combining this device's robust clamping performance and low capacitance, TSD05/TSD05C is an excellent TVS diode to protect data and power lines in many different applications. The Texas Instruments TSD05/TSD05C is offered in the industry standard, leaded SOD-323 package to enable easy solderability.


  • IEC 61000-4-2 level 4 ESD protection
    • ±30kV contact discharge
    • ±30kV air gap discharge
  • IEC61000-4-5 surge protection
    • TSD05 - 60A (8/20µs)
    • TSD05C - 30A (8/20µs)
  • Low clamping voltage
    • TSD05 - 9V at 60A (8/20µs)
    • TSD05C - 14V at 30A (8/20µs)
  • IO capacitance
    • TSD05 - 19pF (typical)
    • TSD05C - 4pF (typical)
  • DC breakdown voltage
    • TSD05 - 7V (typical)
    • TSD05C - ±8V (typical)
  • 50nA (maximum) ultra-low leakage current
  • Low ESD clamping voltage
    • TSD05 - 7.5V at 16A TLP
    • TSD05C - 9.3V at 16A TLP
  • –55°C to +150°C industrial temperature range
  • Industry-standard SOD-323 leaded package (2.5mm × 1.2mm × 0.3mm)


  • 5V power rails
  • GPIO
  • Push buttons
  • Grid infrastructure
  • EPOS
  • Portable electronics

Functional Block Diagram

Block Diagram - Texas Instruments TSD05/TSD05C Surge Protection Device
Published: 2023-09-12 | Updated: 2023-09-19