The SMD4532-420NF Gas Discharge Tube (GDT) from RUILON is a high-performance surge protection device designed to protect electronic circuits from lightning strikes, transient overvoltage, and high-energy electrical disturbances. With a nominal DC spark-over voltage of 420V (tested at 100V/µs), it provides fast and reliable activation, effectively diverting surge currents away from sensitive components and ensuring stable system operation.
Manufactured using advanced ceramic gas discharge technology, the SMD4532-420NF offers stable impulse spark-over characteristics at 1kV/µs, along with high insulation resistance and low capacitance at 1 MHz. These features make it highly suitable for high-speed communication lines and precision electronic systems where signal integrity is critical. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstanding voltage ensure long service life and consistent protection performance under repeated surge conditions.
Compared to lower voltage variants, the 420V model provides increased voltage tolerance and enhanced protection margins, making it ideal for demanding industrial applications, telecom infrastructure, and power systems. The SMD4532 package delivers superior thermal dissipation, higher surge handling capability, and robust mechanical strength, while supporting 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
- Enhanced thermal performance (SMD4532 package)
- Long service life and high reliability
Applications:
- Telecom and networking infrastructure
- Industrial automation systems
- Power supply and inverter protection
- Smart grid and energy systems
- Consumer electronics and IoT devices
- Lightning and transient surge protection circuits
