P4KE75A – 75 V 400 W Uni-Directional TVS Diode | DO-41 | High-Voltage Industrial Surge Protector SEP

The P4KE75A is a 75 V, 400 W uni-directional TVS diode designed to protect 70–75 V DC power lines, automation systems, telecom modules, and industrial equipment against severe transient surges. Its fast avalanche response and controlled breakdown tolerance ensure dependable clamping during lightning surges, inductive spikes, and load-dump events.

Key Specifications

• VRWM: 64.1 V

• VBR: 71.3–78.8 V

• VC: 103 V

• Peak Pulse Power: 400 W

• Package: DO-41

• Response Time: < 1 ns

Applications

• 70–75 V DC power bus protection

• Telecom and networking surge suppression

• Industrial I/O and controller transient protection

• SMPS and DC/DC converter input filtering

• Instrumentation and field control systems

Features

• 400 W peak pulse surge capability

• Accurate clamping for high-voltage DC systems

• Ultra-fast avalanche response (< 1 ns)

• Durable DO-41 axial package with high reliability

• Low leakage and stable breakdown characteristics