P4KE300A 300 V 400 W Uni-Directional TVS Diode | DO-41 | Industrial & Telecom Surge Protector HORNBY

The P4KE300A is a 300 V, 400 W uni-directional TVS diode designed to protect 290300 V DC rails, industrial controllers, telecom power lines, and sensitive electronics from high-energy transients. Its fast avalanche conduction and tightly controlled breakdown range ensure reliable clamping during load-dump events, inductive switching, and lightning-induced surges.

Key Specifications

• VRWM: 260 V

• VBR: 285315 V

• VC: 430 V

• Peak Pulse Power: 400 W

• Package: DO-41

• Response Time: < 1 ns

Applications

• 290300 V DC bus transient suppression

• Industrial automation and PLC protection

• Telecom and networking equipment protection

• SMPS/DC converter input surge handling

• Field instrumentation and control electronics

Features

• 400 W peak pulse energy handling

• Precise clamping for 300 V DC systems

• Ultra-fast avalanche response (< 1 ns)

• Rugged, long-life DO-41 package

• Low leakage current and stable breakdown characteristics