SMCJ40A-AT 1500W 40V TVS Diode SMCJ-AT | RUILON
RUILON
The SMCJ40A-AT is a 1500W transient voltage suppressor (TVS) diode engineered to protect electronic circuits from electrostatic discharge (ESD), lightning-induced surges, and fast transient voltage spikes. With a 40V standoff voltage, it provides reliable overvoltage clamping while maintaining stable operation for low- to mid-voltage power and signal line applications.
Housed in the SMC (DO-214AB) surface-mount package, it delivers 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 improves system efficiency, while the glass-passivated junction structure ensures excellent long-term reliability and thermal stability under demanding conditions.
The 40V rating offers increased operating margin compared to lower-voltage devices, making it ideal for modern electronic systems requiring robust and stable surge protection.
Key Features
- 1500W peak pulse power capability
- 40V 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
