The SMAJ78A TVS Diode from RUILON is a high-reliability 400W transient voltage suppressor designed to protect electronic circuits from voltage spikes, lightning surges, and electrostatic discharge (ESD). With a 78V stand-off voltage, this device is ideal for high-voltage applications, offering superior protection margins compared to lower-voltage TVS diodes while minimizing the risk of unwanted conduction during normal operation. Built using advanced silicon avalanche technology, it provides ultra-fast response time, low leakage current, and precise clamping performance, ensuring efficient suppression of transient overvoltage events.
Engineered for robust performance, the SMAJ78A delivers excellent thermal stability and high peak pulse current capability under 8/20µs surge conditions, making it suitable for harsh electrical environments. Its strong surge absorption capability enhances system reliability and extends the lifespan of sensitive components.
Encased in the industry-standard SMA (DO-214AC) surface-mount package, this diode supports compact PCB layouts and automated assembly processes, making it an excellent choice for modern electronic designs requiring space efficiency and high performance.
The SMAJ78A is widely used in power supplies, automotive electronics, industrial control systems, telecommunications equipment, and consumer electronics, delivering dependable protection against transient voltage threats. It is an ideal solution for engineers seeking compact, efficient, and high-performance surge protection.
Key Specifications:
- Part Number: SMAJ78A
- Peak Pulse Power Dissipation: 400W (8/20µs)
- Stand-off Voltage (VRWM): 78V
- Breakdown Voltage: ~86.7V – 95.8V
- Clamping Voltage: ~126V
- Response Time: Picoseconds
- Leakage Current: Low
- Package: SMA / DO-214AC
- Type: Unidirectional TVS Diode
Applications:
- Power supply protection
- Automotive electronic systems
- Industrial control equipment
- Telecom and networking devices
- Consumer electronics
Key Features:
- 400W peak pulse power capability
- Ultra-fast response to transient events
- Low leakage current for improved efficiency
- Accurate and stable clamping performance
- High thermal stability and reliability
- Compact SMA package for space-saving PCB layouts
- Suitable for high-voltage surge protection applications
