The SMD4532-400NF Gas Discharge Tube (GDT) from RUILON is a high-reliability surge protection component designed to protect electronic systems from lightning strikes, transient overvoltage, and high-energy surge events. With a nominal DC spark-over voltage of 400V (tested at 100V/µs), it ensures fast and stable triggering, effectively diverting surge currents away from sensitive circuitry and enhancing overall system durability.
Built using advanced ceramic gas discharge technology, the SMD4532-400NF delivers consistent impulse spark-over performance at 1kV/µs, along with high insulation resistance and low capacitance at 1 MHz. These features make it ideal for high-speed communication lines and precision electronics where signal integrity is critical. 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 400V model provides significantly higher voltage tolerance and enhanced protection margins, making it suitable for demanding industrial systems, telecom infrastructure, and power applications. The SMD4532 package offers 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: 400V @ 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 systems
- Industrial automation and control equipment
- Power supply and inverter protection
- Smart grid and energy systems
- Consumer electronics and IoT devices
- Lightning and surge protection circuits
