P4KE12CA 12 V 400 W Bi-Directional TVS Diode | DO-41 | Industrial & Telecom Surge Protector HORNBY

The P4KE12CA is a 12 V, 400 W bi-directional TVS diode designed to protect low-voltage AC/DC rails, industrial automation systems, telecom lines, and sensitive electronics from high-energy transient events. Its fast avalanche conduction and tightly regulated breakdown in both polarities provide dependable clamping during load-dump events, inductive switching, and voltage spikes.

Key Specifications

• VRWM: 11 V

• VBR: 12.513.5 V

• VC: 19.0 V

• Peak Pulse Power: 400 W

• Package: DO-41

• Response Time: < 1 ns

Applications

• Low-voltage AC/DC power line transient protection

• Industrial automation and PLC surge suppression

• Telecom and communication line protection

• SMPS/DC/DC converter front-end protection

• Microcontroller and sensor interface safeguarding

Features

• 400 W peak pulse energy absorption

• Bi-directional clamping for AC and DC circuits

• Ultra-fast avalanche response (< 1 ns)

• Rugged, glass-passivated DO-41 package

• Low leakage current and stable breakdown characteristics