The SMD3225-300N Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection device engineered to protect electronic circuits from lightning strikes, transient overvoltage, and high-energy electrical disturbances. With a nominal DC spark-over voltage of 300V (tested at 100V/µs), it ensures fast and accurate triggering, effectively diverting surge energy away from sensitive components and improving overall system reliability.
Built using advanced ceramic gas discharge technology, the SMD3225-300N delivers stable impulse spark-over performance (1kV/µs), high insulation resistance, and ultra-low capacitance at 1 MHz, making it ideal for high-speed communication lines and signal integrity-sensitive applications. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstand voltage ensure long service life and consistent protection under repeated surge stress conditions.
Compared to lower voltage variants, the 300V model provides a higher operating voltage margin, making it suitable for industrial, telecom, and power systems that require enhanced voltage tolerance and robust surge protection performance. The SMD3225 package offers excellent thermal dissipation, mechanical strength, and supports automated surface-mount assembly, making it ideal for modern high-density PCB designs.
Key Features:
- DC Spark-Over Voltage: 300V @ 100V/µS
- Stable impulse spark-over voltage @ 1kV/µS
- High surge current capability (8/20µS)
- Low capacitance @ 1 MHz for signal integrity
- High insulation resistance
- Long service life and high reliability
- Compact SMD3225 surface-mount package
Applications:
- Telecom and networking infrastructure
- Industrial control systems
- Power supply and energy systems
- Smart meters and IoT devices
- Consumer electronics
- Lightning and transient surge protection systems
