SMCJ18A-AT 1500W 18V TVS Diode SMCJ-AT | RUILON

The SMCJ18A-AT is a 1500W transient voltage suppressor (TVS) diode engineered to provide robust protection against electrostatic discharge (ESD), lightning surges, and fast transient voltage spikes. With an 18V standoff voltage, it ensures reliable overvoltage clamping while maintaining stable operation for low-voltage power and signal line applications.

Encapsulated in the SMC (DO-214AB) surface-mount package, it offers high surge handling capability, making it suitable for circuits exposed to high-energy transients. The device features ultra-fast response time, enabling immediate suppression of transient events to protect ICs, communication interfaces, and control electronics. Its low leakage current enhances overall system efficiency, while the glass-passivated junction structure ensures long-term reliability and thermal stability under demanding conditions.

The 18V rating provides increased operating margin compared to lower-voltage devices, making it ideal for modern electronic systems requiring stable and efficient surge protection.

Key Features

• 1500W peak pulse power capability
• 18V standoff voltage for enhanced operating margin
• Ultra-fast response to ESD and surge transients
• Low leakage current for efficient operation
• High surge absorption (8/20 µs waveform)
• SMC (DO-214AB) high-power SMD package
• Glass-passivated junction for high reliability
• Bidirectional protection design

Applications

• Power supply surge protection
• Industrial automation systems
• Telecom and networking equipment
• Consumer electronics protection
• Data and signal line ESD protection
• LED lighting and driver circuits
• Automotive electronic systems