P4KE540A 540 V 400 W Uni-Directional TVS Diode | DO-41 | Industrial & Telecom Surge Protector HORNBY

The P4KE540A is a 540 V, 400 W uni-directional TVS diode designed to protect 530540 V DC rails, industrial automation systems, telecom power lines, and sensitive electronics from high-energy transient events. Its fast avalanche conduction and controlled breakdown range provide reliable clamping during lightning surges, inductive switching spikes, and load-dump conditions.

Key Specifications

• VRWM: 468 V

• VBR: 526554 V

• VC: 770 V

• Peak Pulse Power: 400 W

• Package: DO-41

• Response Time: < 1 ns

Applications

• 530540 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 absorption

• Accurate clamping for 540 V DC systems

• Ultra-fast avalanche response (< 1 ns)

• Rugged, glass-passivated DO-41 axial package

• Low leakage current with stable breakdown characteristics