The SMD3225-470N Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection component designed to protect electronic systems from lightning strikes, transient overvoltage, and high-energy electrical disturbances. With a nominal DC spark-over voltage of 470V (tested at 100V/µs), it ensures fast and reliable activation, effectively diverting surge currents away from sensitive circuitry and enhancing overall system protection.
Manufactured using advanced ceramic gas discharge technology, the SMD3225-470N provides stable impulse spark-over characteristics (1kV/µs), high insulation resistance, and ultra-low capacitance at 1 MHz, making it ideal for high-speed communication lines and signal-sensitive applications. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstand voltage ensure long service life and dependable performance under repeated surge conditions.
Compared to lower voltage variants, the 470V model offers significantly higher operating voltage tolerance and improved protection margin, making it suitable for demanding industrial, telecom, and power system applications. The SMD3225 package delivers enhanced thermal dissipation, mechanical durability, and compatibility with automated surface-mount assembly, supporting efficient and flexible PCB design.
Key Features:
- DC Spark-Over Voltage: 470V @ 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 systems
- Industrial automation and control
- Power supply and energy systems
- Smart grid and smart meters
- Consumer electronics and IoT devices
- Lightning and surge protection circuits
