P4KE480A 480 V 400 W Uni-Directional TVS Diode | DO-41 | Industrial & Telecom Surge Protector HORNBY

The P4KE480A is a 480 V, 400 W uni-directional TVS diode designed to protect 470480 V DC rails, industrial automation systems, telecom power lines, and sensitive electronics from high-energy transients. Its fast avalanche response and tightly controlled breakdown range ensure reliable clamping during lightning surges, inductive switching, and load-dump events.

Key Specifications

• VRWM: 417 V

• VBR: 458502 V

• VC: 700 V

• Peak Pulse Power: 400 W

• Package: DO-41

• Response Time: < 1 ns

Applications

• 470480 V DC bus transient suppression

• Industrial automation and PLC module protection

• Telecom and networking power system surge protection

• SMPS/DC converter input protection

• Field instrumentation and control electronics

Features

• 400 W peak pulse energy handling

• Accurate clamping for 480 V DC systems

• Ultra-fast avalanche response (< 1 ns)

• Rugged, long-life DO-41 axial package

• Low leakage current and stable breakdown characteristics