The SMA6J45A from RUILON is a high-reliability 400W Transient Voltage Suppressor (TVS) diode engineered to protect sensitive electronic circuits from voltage transients, electrostatic discharge (ESD), and surge-related damage. Housed in a compact SMA (DO-214AC) surface-mount package, it delivers strong surge-handling capability while maintaining excellent PCB space efficiency for modern high-density electronic designs.
With a 45V reverse standoff voltage, the SMA6J45A is optimized for medium-voltage power rails and signal line protection, providing stable operation under normal conditions while rapidly clamping high-energy voltage spikes. Its ultra-fast response time ensures immediate suppression of transient events, effectively safeguarding critical components such as ICs, microcontrollers, and communication interfaces.
The device offers a peak pulse power dissipation of 400W (10/1000 µs waveform), enabling strong energy absorption and reliable protection under repeated surge conditions. Compared to lower-voltage TVS diodes, the SMA6J45A provides a higher breakdown threshold, making it suitable for systems requiring improved voltage margin and enhanced durability.
Built using advanced silicon avalanche technology, it features low leakage current, precise clamping behavior, and long-term operational stability. This ensures consistent performance even in harsh electrical environments with frequent transient disturbances.
Key Features
- 400W peak pulse power dissipation (10/1000 µs waveform)
- 45V reverse standoff voltage for medium-voltage protection
- Ultra-fast response time for instant ESD and surge suppression
- Low leakage current for efficient circuit performance
- High surge capability for repetitive transient events
- Strong clamping performance for sensitive device protection
- Compact SMA (DO-214AC) surface-mount package
- Silicon avalanche technology for high reliability and stability
Applications
- Automotive electronics and ECU protection systems
- Industrial automation and control equipment
- Power supply input/output protection circuits
- Communication interfaces (RS-485, RS-232, Ethernet ports)
- Consumer electronics and smart devices
- LED lighting drivers and power modules
- Portable and battery-powered electronics
- I/O ports and signal line ESD protection systems
