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TVS diodes protect against higher voltage transients

New Products |
By Nick Flaherty


The latest additions expand the TPSMB Series’ breakdown voltage range from 7.5V to 550V for unidirectional and 10V to 650V for bidirectional devices. The AEC-Q101 qualified TVS Diodes provide 600W of peak pulse power dissipation in a standard DO-214AA SMB package, one of the most popular form factors for automotive applications. By making it unnecessary to use multiple TVS Diodes in series to provide adequate protection, the expanded TPSMB Series simplifies printed circuit board design and enhances reliability

As well as convertor and invertor systems for electric vehicles, typical applications for the expanded line of TPSMB Series TVS Diodes include IGBT active clamping in HVAC systems, series battery protection in automotive Battery Management Systems (BMS), sensors and Electronic Control Units (ECUs). The bidirectional parts can be used with Xenon headlamp ignitors as well as BCMs/LIN Bus/CAN Bus protection and on-board entertainment systems.

“The high voltage additions to the TPSMB Series of Automotive TVS Diodes offer circuit designers a single-component alternative to using multiple TVS Diodes in series to provide higher levels of transient voltage protection,” said Charlie Cai, Global Product Manager, Electronics Business Unit at Littelfuse. “Not only does this simplify the design of the printed circuit board but it enhances the reliability of the design.” 

The 600W peak pulse power dissipation rating and DO‑214AA SMB surface-mount package allow for efficient use of board space.

TPSMB Series Automotive TVS Diodes are available in DO-214AA SMB packages in tape and reel format in quantities of 3,000.

Littelfuse.com autootive product page

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