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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.

Products within the TPSMB series have been qualified to AEC-Q101, and are appropriate for use in Automotive applications.

The TPSMB series Transient Voltage Suppression (TVS) Diode offers secondary protection of sensitive automotive and other electronics from transients induced by load dump and other transient voltage events. It’s AEC-Q101 qualified, which makes it an ideal choice for protecting I/O interfaces, VCC bus and other vulnerable circuits used in automotive applications.


  • 600W Pppm (peak pulse power) dissipation rating (10×1000 μs waveform)
  • AEC-Q101 qualified
  • SMB package (DO-214AA)
  • Both uni-directional and bi-directional polarity devices offer 10V to 77V standoff voltage range
  • Complies with IEC 61000-4-2 and IEC 610000-4-4 standards

  • Very popular power dissipation rating for automotive applications
  • Automotive-grade products are well-suited for high reliability applications
  • Standard package and compact footprint allow quick and easy layout in high reliability applications
  • Wide standoff voltage range fulfills all design requirements for automotive applications
  • Helps designers meet global regulatory standards

  • DC power protection and ESD protection in automotive electronics like:
  • Electronic control units
  • BCMs
  • CAN bus
  • LIN bus
  • Sensors
  • Entertainment systems
  • Portable devices that require high reliability

pdf icon Automotive Circuit Protection using Littelfuse Automotive TVS Diodes Application Note

The designers of automotive electronics face many technical challenges during the system design process...