SA51A – 51 V 500 W Uni-Directional TVS Diode | DO-15 | Industrial & Telecom Surge Protector SEP

The SA51A is a 51 V, 500 W uni-directional TVS diode designed for surge suppression in industrial control circuits, telecom power rails, and communication modules. It provides fast avalanche clamping to protect sensitive electronics from spikes and transient disturbances.

Key Specifications

• VRWM: 43.6 V

• VBR: 47.5–52.5 V

• VC: 82.4 V

• Peak Pulse Power: 500 W

• Package: DO-15

• Response Time: < 1 ns

Applications

• 48–51 V telecom DC rails

• Industrial automation modules

• Relay/solenoid surge protection

• Communication and control systems

Features

• Strong 500 W transient capability

• Fast avalanche clamping

• Stable low-leakage performance

• Rugged axial DO-15 epoxy body