Littelfuse – TPSMC and TPSMD Series: Surface Mount TVS Diodes Offer High Reliability in Automotive Applications

The TPSMC and TPSMD series of AEC-Q101 qualified Transient Voltage Suppression (TVS) diodes protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. The diodes are suitable for surface mounting, and have a low profile package.

The TPSMC series has a 1,500W peak pulse power capability on a 10/1000μs waveform, with a repetition rate of 0.01%. The TPSMD series’ peak power rating is 3,000W.

In addition, the devices conform to the IEC 61000-4-2 ESD standard, providing 15kV of protection in air, and 8kV of protection for contact. ESD protection of data lines is provided in accordance with IEC 61000-4-2 (IEC 801-2), and EFT protection of data lines in accordance with IEC 61000-4-4 (IEC 801-4). Both the TPSMC and TPSMD offer a fast response time, typically less than 1.0ps from 0V to the minimum breakdown voltage. They also offer excellent clamping capability and low incremental surge resistance.

Typical reverse current in the TPSMC series is less than 1μA above 13V. For the TPSMD, this figure is less than 2μA above 12V. The typical failure mode for the diodes is short from an over specified voltage or current.


  • Automotive
  • Telecom equipment
  • Computer equipment
  • Industrial appliances
  • Consumer electronics products

  • +150°C maximum operating temperature
  • Peak forward surge current:
    • 300A TPSMD series
    • 200A TPSMC series
  • 15°C/W junction-to-lead thermal resistance