Circuit & System Protection


New transient voltage suppressors for automotive applications

30 May 2022 Circuit & System Protection

Vishay Intertechnology has introduced a new series of surface-mount TRANSZORB bidirectional transient voltage suppressors (TVS) in the SMC package for automotive, industrial and telecommunication applications. Offering high surge capability of 3 kW at 10/1000 μs to meet the specifications of ISO 16750-2 Pulse b, the SMC3KxxxCAHM3_A series devices provide low leakage current down to 1 μA from 22 V to 120 V and high temperature operation up to 175°C.

Suitable for high-reliability applications, the TVS offer extremely stable breakdown voltage from 11.1 V to 133 V across their entire operating temperature range of -55°C to 175°C. Designed to protect sensitive electronic equipment against voltage transients induced by inductive load switching and lightning, the devices are intended for automotive load dump protection and signal line protection of sensor units for consumer, computer, industrial and telecommunication systems.

The SMC3KxxxCAHM3_A series consists of 33 TVS part numbers with stand-off voltages from 10 V to 120 V. The devices offer very fast response times, low incremental surge resistance, and excellent clamping capability, with a maximum clamping voltage from 17 V to 193 V at 10/1000 μs. The devices are RoHS-compliant and halogen-free, and they offer a moisture sensitivity level of 1.


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