Littelfuse, an industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy, announced the launch of its TPSMC, TPSMD, and TP5.0SMDJ high-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
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 <1 ps) for effective transient clamping
- AEC-Q101 qualified and PPAP capable for automotive reliability requirements
- DO-214AB (SMC) surface-mount package minimizes 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
Designed for High-Voltage Automotive Power Systems
The TPSMC, TPSMD, and TP5.0SMDJ series is first-to-market in offering TVS diodes purpose-built for emerging high-voltage automotive subsystems, allowing designers to:
- Reduce the number of TVS devices required in series
- Optimize selection of lower-rated GaN/SiC MOSFETs or IGBTs to reduce conduction losses
- Improve overall system efficiency while lowering cost
“These high-voltage TVS diodes were developed specifically for next-generation automotive power architectures,” said Charlie Cai, Director of Product Marketing, Littelfuse. “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.”
TPSMC, TPSMD, and TP5.0SMDJ Series Overview
All series are available in unidirectional and bidirectional configurations.
Markets and Applications
- Automotive electronics
- Battery Disconnect Units (BDU)
- High-voltage HVAC compressors
- PTC cabin and battery heaters
- High-voltage DC power distribution
FAQs – High-Voltage TPSMC, TPSMD, and TP5.0SMDJ TVS Diodes
Why use high-voltage TVS diodes instead of traditional TVS solutions?
High-voltage TVS diodes provide sufficient standoff voltage in a single device, eliminating the need for multiple low-voltage devices in series. This reduces PCB area, cost, and design complexity.
Which power semiconductors are these TVS diodes designed to protect?
They are optimized for protecting GaN/SiC MOSFETs and IGBTs used in high-voltage automotive power electronics.
What automotive standards do these devices meet?
The TPSMC, TPSMD, and TP5.0SMDJ series are AEC-Q101 qualified, PPAP capable, and compliant with IEC-61000-4-2 ESD requirements.
What are the differences between the TPSMB, TPSMD, and TP5.0SMDJ series?
TPSMC supports 1500 W, TPSMD supports 3000 W, while TP5.0SMDJ supports 5000 W peak pulse power.
Are these TVS diodes compatible with existing Littelfuse designs?
Yes. They are designed to integrate seamlessly with existing Littelfuse TVS and circuit protection portfolios.
