Vishay adds bidirectional flat clamping TVS in DO-218AC

Vishay Intertechnology has launched the XFD11KxxCA series, a new range of bidirectional XClampR flat clamping transient voltage suppressors (TVS) in the surface-mount DO-218AC package. The 15-device line is offered in both commercial-grade and AEC-Q101 qualified versions.

Vishay states these are the industry's first devices in this format to combine peak pulse power dissipation comparable to 11 kW conventional TVS at 10/1000 μs with a clamping ratio (VC/VBR) close to 1.0, aimed at higher power density. Stand-off voltages span 33 V to 85 V, covering 12 V, 24 V and 48 V automotive powertrains, with maximum clamping voltages from 40.6 V to 104.0 V and breakdown voltages from 36.7 V to 104 V.

Compared with conventional devices in DO-218-compatible packages, Vishay says the new series delivers a lower clamping voltage at the same stand-off voltage and approximately 1.6 times higher peak pulse current, up to 207.1 A at 10/1000 μs. The company adds that clamping and breakdown voltages remain low and stable across -55°C to +175°C, potentially allowing designers to specify lower-voltage downstream MOSFETs and capacitors and reduce design guard bands. The devices also support 8/20 μs surge capability up to 2140 A and a maximum leakage current of 10 μA at stand-off voltage.

Vishay lists intended uses spanning ADAS, autonomous driving control units, on-board chargers, DC/DC converters, traction inverters, battery management systems and body control modules, alongside energy storage systems, industrial servo and automation controls, server power and AI server hot-swap circuits, telecom power supplies, T-Box DC/DC conversion, and radar power supplies.

The devices are RoHS-compliant and halogen-free, with a moisture sensitivity level of 1 per J-STD-020 and a maximum peak reflow temperature of 245°C; leads are solderable per J-STD-002 and JESD 22-B102. Vishay states that samples and production quantities are available now, with lead times of 12 weeks.