SMDJ43A-AT 3000W 43V TVS Diode SMDJ-AT | RUILON

The SMDJ43A-AT is a 3000W transient voltage suppressor (TVS) diode designed to deliver strong protection against electrostatic discharge (ESD), lightning surges, and fast transient voltage spikes. With a 43V standoff voltage, it ensures accurate overvoltage clamping while maintaining stable operation for low- to mid-voltage power rails and signal line applications.

Housed in the SMC (DO-214AB) surface-mount package, the SMDJ-AT series provides superior surge handling capability compared to SMBJ and SMCJ families, making it ideal for circuits exposed to high-energy transient conditions. The device features ultra-fast response time, enabling immediate suppression of voltage spikes to protect ICs, communication interfaces, and control electronics. Its low leakage current enhances system efficiency, while the glass-passivated junction structure ensures excellent long-term reliability and thermal stability under demanding environments.

The 43V rating provides increased operating margin compared to lower-voltage devices, making it suitable for modern electronic systems requiring robust and stable surge protection performance.

Key Features

• 3000W peak pulse power capability
• 43V 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

• High-power surge protection circuits
• Industrial automation systems
• Telecom and networking equipment
• Power supply protection
• Data and signal line ESD protection
• LED lighting and driver circuits
• Automotive and heavy-duty electronic systems