SMD2921-200N Gas Discharge Tubes – SMD2921 Package | RUILON

The SMD2921-200N Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection device designed to safeguard electronic circuits against lightning strikes, transient overvoltage, and high-energy electrical surges. With a nominal DC spark-over voltage of 200V (tested at 100V/µs), it provides fast and reliable triggering, ensuring effective diversion of surge energy away from sensitive components.

Engineered using advanced ceramic gas discharge technology, the SMD2921-200N delivers stable impulse spark-over characteristics (1kV/µs), high insulation resistance, and low capacitance at 1 MHz, making it ideal for high-speed communication and signal lines where signal integrity is critical. Its strong impulse discharge current capability (8/20µs waveform) and high impulse withstand voltage ensure long service life and consistent protection performance under repeated surge events.

Compared to lower voltage GDT series, the 200V variant offers a higher operating voltage margin, making it suitable for systems requiring improved tolerance in industrial and communication environments. The compact SMD2921 package provides an excellent balance between size efficiency and surge handling capability, while supporting automated surface-mount assembly and flexible PCB design integration.

Key Features:

• DC Spark-Over Voltage: 200V @ 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 SMD2921 surface-mount package

Applications:

• Telecom and networking systems
• Industrial automation equipment
• Power supply protection circuits
• Smart meters and IoT devices
• Consumer electronics
• Lightning and surge protection solutions