Vishay Intertechnology, has launched a new family of bidirectional XClampR flat-clamping transient voltage suppressors (TVS) designed for surface-mount applications using the DO-218AC package. The new Vishay General Semiconductor XFD11KxxCA series is claimed to be the first of its kind to combine peak pulse power handling comparable to conventional 11 kW TVS devices at 10/1000 μs with a low clamping ratio (VC/VBR) approaching 1.0. This combination enables high power density while providing effective transient protection. The series comprises 15 devices, available in both commercial-grade and AEC-Q101-qualified versions.
The TVS released today provide maximum clamping voltages from 40.6 V to 104.0 V, breakdown voltages from 36.7 V to 104 V, and a wide stand-off voltage range from 33 V to 85 V, which supports 12 V, 24 V, and 48 V automotive system powertrains. Compared to conventional devices in DO-218-compatible packages, the XFD11KxxCA series provides lower clamping voltage at the same stand-off voltage, while delivering approximately 1.6x higher peak pulse current — up to 207.1 A at 10/1000 μs.
The TVS feature low and stable clamping and breakdown voltages over a wide temperature range of
-55 °C to +175 °C. This allows designers to select lower voltage downstream components — such as MOSFETs and capacitors — to reduce voltage overshoot and enable smaller design guard bands, lowering system costs. The devices provide 8/20 μs surge capability up to 2140 A, supporting low dynamic resistance and flat clamping performance. In addition, they feature low leakage current of 10 μA maximum at stand-off voltage (VWM) to minimize power loss.
The XFD11KxxCA series is designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning. Automotive applications include ADAS, autonomous driving control units (ADCU), on-board chargers (OBC), DC/DC converters, traction inverters, battery management systems (BMS), body control modules (BCM), park distance control (PDC), oil pumps, camera systems, and automatic air conditioning systems. In addition, the TVS will be used in energy storage systems; industrial servo motor systems, EPS, lighting systems, and automation controls; server power and AI server hot swap; telecom power supplies and T-Box DC/DC power conversion; and radar power supplies.
RoHS-compliant and halogen-free, the devices feature a moisture sensitivity level (MSL) of 1 in accordance with J-STD-020, with a maximum peak reflow temperature of 245 °C. Their matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102.
Samples and production quantities of the new TVS are available now, with lead times of 12 weeks.
