New automotive-grade TVS diodes reduce BOM cost while protecting GaN/SiC MOSFETs and IGBTs in BDU, HVAC, and PTC systems
Littelfuse, Inc. (NASDAQ: LFUS), an industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy, today announced the launch of its TPSMC, TPSMD,and TP5.0SMDJhigh-voltage transient voltage suppression (TVS) diode series, expanding the TP Series portfolio with devices specifically engineered for automotive high-voltage power electronics applications including battery disconnect units (BDUs), high-voltage HVAC systems, and positive temperature coefficient (PTC) heaters. (View the video.)
As electrified vehicle architectures migrate toward higher voltages and wide-bandgap semiconductors, power devices such as GaN/SiC MOSFETs and IGBTs are increasingly exposed to severe voltage transients from load dumps, inductive switching, and other high-energy events. Traditional low- and mid-voltage TVS solutions often require multiple devices in series to achieve sufficient protection, thereby increasing PCB area, complexity, and bill of materials (BOM) costs.
The new TPSMC, TPSMD, and TP5.0SMDJ high-voltage TVS diodes address this challenge by delivering higher standoff voltages—up to 400 V—and high peak pulse power in a single automotive-grade device, enabling engineers to simplify protection schemes while improving system efficiency and robustness.
Key Features and Benefits
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
