Littelfuse expands range of high-voltage TVS diodes for automotive

Specifically, it has added the TPSMC, TPSMD, and TP5.0SMDJ high-voltage transient voltage suppression (TVS) diode series.

Example applications include battery disconnect units (BDUs), high-voltage HVAC systems, and positive temperature coefficient (PTC) heaters.

Features

Littelfuse highlights the following Features of the TPSMC, TPSMD, and TP5.0SMDJ Series.

• High-standoff voltage (≥400 V) enables single-device protection in high-voltage automotive circuits
• Peak-surge current up to 300 A and peak pulse power up to 5 kW, supporting harsh transient conditions
• Fast-response time (typically <1 ps) for effective transient clamping
• AEC-Q101 qualified and PPAP capable for automotive reliability requirements
• DO-214AB (SMC) surface-mount package minimises PCB footprint and simplifies layout
• IEC-61000-4-2 ESD compliance (up to 30 kV) for robust system-level protection
• Reduced BOM cost and component count compared to multi-device protection approaches

The company claims the new additions are the first-to-market in offering TVS diodes purpose-built for emerging high-voltage automotive subsystems.

They will, explain Littelfuse, reduce the number of TVS devices required in series. And help optimise the selection of lower-rated GaN/SiC MOSFETs or IGBTs to reduce conduction losses.

Next-gen auto power

“These high-voltage TVS diodes were developed specifically for next-generation automotive power architectures,” said Littelfuse’s Director of Product Marketing, Charlie Cai.

“By enabling single-device transient protection in BDU, HVAC, and PTC applications, our customers can simplify designs, reduce BOM cost, and even select lower-rated power semiconductors to improve efficiency and system performance.”

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