SMD3225-075N Gas Discharge Tubes – SMD3225 Package | RUILON

The SMD3225-075N Gas Discharge Tube (GDT) from RUILON is a high-performance surge protection device designed to protect sensitive electronic circuits from lightning strikes, transient overvoltage, and electrostatic discharge events. With a nominal DC spark-over voltage of 75V (tested at 100V/µs), it provides fast and reliable response, ensuring efficient diversion of surge energy away from critical components and improving overall system safety.

Built using advanced ceramic gas discharge technology, the SMD3225-075N offers stable impulse spark-over characteristics (1kV/µs), high insulation resistance, and low capacitance at 1 MHz, making it highly suitable for high-speed communication and signal lines where minimal signal distortion is essential. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstand voltage ensure long service life and consistent performance under repeated surge conditions.

Compared to higher voltage GDT series, the 75V variant provides faster response sensitivity and enhanced protection for low-voltage sensitive circuits, making it ideal for precision electronics and communication interfaces. The SMD3225 package offers improved thermal performance and higher surge handling capability compared to smaller formats, while maintaining compatibility with automated surface-mount assembly for efficient PCB design.

Key Features:

• DC Spark-Over Voltage: 75V @ 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 equipment
• Industrial control systems
• Power supply protection circuits
• Smart meters and IoT devices
• Consumer electronics
• Lightning and transient surge protection systems