The SMA6J48A from RUILON is a high-performance 400W Transient Voltage Suppressor (TVS) diode designed to provide reliable protection against voltage transients, electrostatic discharge (ESD), and surge events in sensitive electronic systems. Packaged in a compact SMA (DO-214AC) surface-mount form factor, it offers an excellent balance of high surge capability, thermal stability, and PCB space efficiency, making it suitable for modern high-density circuit designs.
With a 48V reverse standoff voltage, the SMA6J48A is optimized for medium-voltage power rails and signal line protection, ensuring stable operation under normal working conditions while quickly clamping harmful transient voltage spikes. Its ultra-fast response time enables immediate suppression of surge energy, effectively protecting critical components such as integrated circuits, microcontrollers, and communication interfaces.
The device supports a peak pulse power dissipation of 400W (10/1000 µs waveform), delivering strong energy absorption capability and dependable performance under repeated transient stress. Compared to lower-voltage TVS devices, the SMA6J48A provides a higher breakdown threshold, making it ideal for applications requiring improved voltage margin and enhanced system robustness.
Built on advanced silicon avalanche technology, it ensures low leakage current, precise clamping behavior, and long-term reliability even in harsh electrical environments. This makes it a dependable solution for safeguarding electronic systems against unpredictable surge conditions.
Key Features
- 400W peak pulse power dissipation (10/1000 µs waveform)
- 48V reverse standoff voltage for medium-voltage circuit protection
- Ultra-fast response time for instant ESD and surge suppression
- Low leakage current for efficient and stable operation
- High surge capability for repetitive transient events
- Strong clamping performance for sensitive electronics protection
- Compact SMA (DO-214AC) surface-mount package
- Silicon avalanche technology for high reliability and durability
Applications
- Automotive electronic control systems (ECUs, sensors)
- Industrial automation and control equipment
- Power supply line protection (DC and AC rails)
- Communication interfaces (RS-485, RS-232, Ethernet ports)
- Consumer electronics and smart devices
- LED lighting drivers and power modules
- Portable and battery-powered electronic systems
- I/O ports and signal line ESD protection
