The SMAJ400A TVS Diode from RUILON is a high-performance 400W transient voltage suppressor engineered to protect sensitive electronic circuits from voltage spikes, lightning surges, and electrostatic discharge (ESD). Featuring a 400V stand-off voltage, this device is specifically designed for high-voltage applications, offering maximum protection margins compared to lower-voltage TVS diodes while minimizing the risk of false triggering during normal operation. Built using advanced silicon avalanche technology, it ensures ultra-fast response time, low leakage current, and precise clamping performance, delivering efficient suppression of transient overvoltage events.
Designed for harsh and demanding environments, the SMAJ400A provides excellent thermal stability and high peak pulse current capability under 8/20µs surge conditions, ensuring consistent protection even under repeated surge exposure. Its strong surge absorption capability enhances system durability and extends the lifespan of connected components.
Encased in the industry-standard SMA (DO-214AC) surface-mount package, this diode supports compact PCB layouts and automated assembly processes, making it ideal for modern electronic designs requiring both high performance and space efficiency. Its rugged construction ensures reliable operation across a wide range of applications.
The SMAJ400A is widely used in power supplies, industrial control systems, telecommunications infrastructure, automotive electronics, and consumer devices, delivering dependable protection against high-energy transient voltage threats. It is an excellent solution for engineers seeking compact, efficient, and high-reliability surge protection.
Key Specifications:
- Part Number: SMAJ400A
- Peak Pulse Power Dissipation: 400W (8/20µs)
- Stand-off Voltage (VRWM): 400V
- Breakdown Voltage: ~444V – 492V
- Clamping Voltage: ~648V
- Response Time: Picoseconds
- Leakage Current: Low
- Package: SMA / DO-214AC
- Type: Unidirectional TVS Diode
Applications:
- Power supply surge protection
- Industrial control equipment
- Telecommunications systems
- Automotive electronics
- Consumer electronics
Key Features:
- 400W peak pulse power capability
- Ultra-fast transient response
- Low leakage current for improved efficiency
- Accurate and stable clamping performance
- High thermal stability and long-term reliability
- Compact SMA package for high-density PCB layouts
- Suitable for high-voltage protection applications
