The SMAJ120A 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 120V stand-off voltage, this device is specifically designed for high-voltage applications, offering superior 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 delivers ultra-fast response time, low leakage current, and precise clamping performance, ensuring efficient suppression of transient overvoltage events.
Designed for reliability in demanding environments, the SMAJ120A provides excellent thermal stability and high peak pulse current capability under 8/20µs surge conditions, ensuring consistent performance even under repeated surge exposure. Its high surge absorption capability enhances system durability and extends the lifespan of protected 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 performance and space efficiency. Its rugged construction ensures long-term reliability across a wide range of applications.
The SMAJ120A is widely used in power supplies, automotive electronics, industrial control systems, telecommunications infrastructure, and consumer electronics, providing dependable protection against transient voltage threats. It is an excellent choice for engineers seeking compact, efficient, and high-reliability surge protection solutions.
Key Specifications:
- Part Number: SMAJ120A
- Peak Pulse Power Dissipation: 400W (8/20µs)
- Stand-off Voltage (VRWM): 120V
- Breakdown Voltage: ~133V – 147V
- Clamping Voltage: ~193V
- Response Time: Picoseconds
- Leakage Current: Low
- Package: SMA / DO-214AC
- Type: Unidirectional TVS Diode
Applications:
- Power supply surge protection
- Automotive electronic systems
- Industrial control equipment
- Telecom and networking devices
- Consumer electronics
Key Features:
- 400W peak pulse power capability
- Ultra-fast transient response
- Low leakage current for improved efficiency
- Accurate and stable clamping voltage
- High thermal stability and long-term reliability
- Compact SMA package for high-density PCB layouts
- Suitable for high-voltage protection applications
