P4KE7.5A – 7.5V 400W Unidirectional TVS Diode | DO-41 | DC Line & Low-Voltage Protection SEP

The P4KE7.5A is a 400W unidirectional transient voltage suppressor engineered for protecting low-voltage DC rails, sensors, controllers, and general-purpose electronics from surges. With a 7.5V standoff and a precise breakdown window of 7.13–7.88V, it delivers reliable clamping at 12.9V under high-energy pulses. Designed for fast transient suppression and strong surge endurance (400W/1ms, 31A peak pulse), it ensures equipment safety in harsh electrical environments. Its unidirectional characteristic makes it ideal for protecting polarity-sensitive DC circuits.

Key Specifications

• VWM (Standoff Voltage): 7.5V

• VBR (Breakdown Voltage): 7.13–7.88V

• VC (Clamping Voltage): 12.9V

• IPP (Peak Pulse Current): 31A

• PPP (Peak Pulse Power): 400W

• IR (Leakage Current): 1000µA

• Polarity: Unidirectional

• Package: DO-41

Features

• High-energy 400W surge protection

• Fast response time for EFT/ESD suppression

• Low leakage and stable breakdown behavior

• Tight voltage regulation and clamping efficiency

• Unidirectional polarity for DC electronics

• Rugged DO-41 through-hole package

Applications

• DC power line surge suppression

• Microcontroller & sensor input protection

• Automotive/industrial low-voltage rails

• Relay/solenoid flyback protection

• Communication interfaces & control modules