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Vishay XFD11KxxCA Series: Low-Clamping TVS for Power Transient Protection

Vishay Intertechnology has introduced the XFD11KxxCA series of bidirectional XClampR flat-clamping transient voltage suppressors (TVS). These devices deliver high surge capability with a near-1.0 clamping ratio in a surface-mount DO-218AC package, making them ideal for protecting 12 V, 24 V and 48 V automotive and industrial power systems.

Key Specifications

• Peak pulse power: 11 kW (10/1000 µs)
• Peak pulse current: up to 207.1 A (10/1000 µs), 2140 A (8/20 µs)
• Stand-off voltage (V_WM): 33 V to 85 V (15 variants)
• Breakdown voltage (V_BR): 36.7 V to 104 V
• Maximum clamping voltage (V_C): 40.6 V to 104.0 V
• Clamping ratio (V_C/V_BR): close to 1.0
• Leakage current: max. 10 µA at V_WM
• Operating temperature: -55°C to +175°C
• Package: surface-mount DO-218AC
• Qualification: commercial-grade and AEC-Q101 automotive versions

The flat-clamping architecture and low dynamic resistance provide lower clamping voltage compared with conventional TVS devices in the same package, while supporting approximately 1.6× higher peak pulse current. This allows designers to use lower-voltage-rated downstream components (MOSFETs, capacitors, etc.), reducing cost and voltage guard bands.

Target Applications

• ADAS and autonomous driving control units
• On-board chargers, DC/DC converters, traction inverters
• Battery management systems (BMS)
• Body control modules, camera and radar power supplies
• Industrial automation, servo motors, energy storage
• AI/server hot-swap power and telecom supplies

The XFD11KxxCA series protects against transients from inductive load switching and lightning while maintaining stable performance across the full temperature range.

Source: Electronics For You