LTspice models are now available for TVS diodes and ESD suppressors

Würth Elektronik, in collaboration with the Institute of Electronics (IFE) at Graz University of Technology, now offers an LTspice model for its TVS diodes and ESD suppressors based on real measurement data obtained using TLP (Transmission Line Pulsing). This enables the actual behaviour of the components to be measured under electrostatic discharge (ESD) conditions. The ready-to-use simulation files facilitate seamless integration into SPICE-based analyses, helping to reduce design cycles and shorten time-to-market.

Conventional models of ESD protection components generally rely on simplified approximations. The new models developed by the company and the IFE, based on measurement data, however, reflect the actual transient properties, including snapback behaviour. The snapback effect enables the voltage to be clamped to a lower level after a transient overvoltage than is possible with standard PN diodes. This is a key aspect of ESD protection, as it lowers the overvoltage and the resulting thermal stress on sensitive electronic components, so the ability to simulate it is a critical improvement to the development process.

Simulating real transient behaviour provides assurance in testing circuits under realistic conditions. Reliable simulations shorten testing and development cycles and lower the risk of product recalls resulting from ESD vulnerabilities. At the same time, they supply insights into component behaviour, allowing design optimisation to ensure consistent ESD robustness across all applications, from consumer electronics to industrial equipment.

LTspice models for realistic modelling of real component behaviour during ESD events for products from the WE-TVS and WE-VE product series are now available.