The RUILON SMDJ440A is a high-performance 3000W Transient Voltage Suppressor (TVS) diode designed in the rugged SMC/DO-214AB package, delivering robust protection against high-energy transient voltage events. It is engineered to safeguard sensitive electronic circuits from damage caused by lightning surges, inductive switching spikes, and electrostatic discharge (ESD), ensuring stable and long-term system reliability.
With a 440V standoff voltage, the SMDJ440A is optimized for high-voltage DC power rails and signal line protection in industrial, telecom, and power management systems. It provides ultra-fast response time and excellent clamping capability, effectively limiting overvoltage conditions before they can reach critical components. The device supports a peak pulse power dissipation of 3000W (10/1000µs waveform), enabling it to absorb substantial transient energy while maintaining stable electrical performance and durability.
Compared to lower-voltage TVS diode variants, the SMDJ440A offers a significantly higher operating margin, making it ideal for high-voltage applications and harsh electrical environments. The SMC package ensures excellent mechanical strength, efficient heat dissipation, and compatibility with automated PCB assembly, supporting compact and high-density circuit designs.
Key Features:
- 3000W peak pulse power capability
- 440V standoff voltage for high-voltage protection
- Ultra-fast transient response time
- Low leakage current for efficient performance
- High surge and ESD protection capability
- Excellent clamping performance
- Robust SMC/DO-214AB surface-mount package
- High reliability and long operational lifespan
Applications:
- High-voltage power supply systems
- Industrial automation and control equipment
- Telecommunication infrastructure
- DC bus and power line protection
- Consumer and industrial electronics
- Network and communication interfaces
- Power distribution and control systems
- General-purpose high-voltage transient suppression
