The SMD5050-420NA Gas Discharge Tube (GDT) from RUILON is a high-reliability surge protection component engineered to protect electronic systems from lightning strikes, transient overvoltage, and high-energy surge events. With a nominal DC spark-over voltage of 420V (tested at 100V/µs), it ensures fast and stable activation, effectively diverting surge currents away from sensitive circuitry and enhancing overall system durability.
Built using advanced ceramic gas discharge technology, the SMD5050-420NA provides stable impulse spark-over performance at 1kV/µs, along with high insulation resistance and low capacitance at 1 MHz. These characteristics make it ideal for high-speed communication lines and precision electronic applications where maintaining signal integrity is essential. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstanding voltage ensure long service life and reliable performance even under repeated surge conditions.
Compared to lower voltage variants, the 420V model offers increased voltage tolerance and enhanced protection margins, making it suitable for industrial automation systems, telecom infrastructure, and power supply applications. The SMD5050 package delivers superior thermal dissipation, higher surge current handling capability, and robust mechanical strength, while enabling efficient surface-mount assembly for modern PCB designs.
Key Features:
- DC Spark-Over Voltage: 420V @ 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
- Superior thermal performance (SMD5050 package)
- Long service life and high reliability
Applications:
- Telecom and networking systems
- Industrial automation and control equipment
- Power supply and inverter protection
- Smart grid and metering systems
- Consumer electronics and IoT devices
- Lightning and surge protection circuits
