SA18A – 18 V 500 W Uni-Directional TVS Diode | DO-15 | Medium-Voltage Transient Protector SEP

The SA18A is an 18 V, 500 W uni-directional TVS diode ideal for automotive 18 V systems, relay coils, and industrial DC power rails. It delivers stable clamping and excellent transient immunity.

Key Specifications

• VRWM: 15.3 V

• VBR: 17.1–18.9 V

• VC: 29.2 V

• Peak Pulse Power: 500 W

Applications

• 18 V DC electronics

• Industrial automation modules

• Communication equipment

• Relay and inductive load protection

Features

• Fast avalanche operation

• High surge endurance

• Low dynamic resistance

• Durable epoxy-molded DO-15 body