SMD3225-350N Gas Discharge Tubes – SMD3225 Package | RUILON

The SMD3225-350N Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection device designed to protect electronic systems from lightning strikes, transient overvoltage, and high-energy electrical disturbances. With a nominal DC spark-over voltage of 350V (tested at 100V/µs), it ensures fast and reliable activation, effectively diverting surge currents away from sensitive components and enhancing system safety.

Manufactured using advanced ceramic gas discharge technology, the SMD3225-350N offers stable impulse spark-over performance (1kV/µs), high insulation resistance, and low capacitance at 1 MHz, making it suitable for high-speed communication lines and signal-sensitive applications with minimal signal distortion. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstand voltage ensure long service life and dependable performance even under repeated surge conditions.

Compared to lower voltage variants, the 350V model provides increased operating voltage margin and improved system robustness, making it ideal for industrial, telecom, and power applications requiring higher voltage tolerance. The SMD3225 package delivers enhanced thermal dissipation, mechanical strength, and supports automated surface-mount assembly, making it suitable for compact and high-density PCB designs.

Key Features:

• DC Spark-Over Voltage: 350V @ 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 equipment
• Power supply and inverter protection
• Smart grid and smart meters
• Consumer electronics and IoT devices
• Lightning and surge protection circuits