2R420TB-8 420V Gas Discharge Tube – 2RB-5 Package | RUILON
RUILON
The 2R420TB-8 Gas Discharge Tube (GDT) from RUILON is a high-performance ceramic surge protection device designed to safeguard electronic circuits from high-energy transient overvoltage events such as lightning strikes, switching surges, and electrostatic discharge (ESD). Built with advanced gas discharge technology, it ensures fast response and stable long-term protection in demanding environments.
With a DC spark-over voltage of 420V, this component is optimized for medium to high-voltage applications, providing a strong protection threshold that minimizes false triggering while maintaining effective surge suppression capability. Compared to lower-voltage GDT variants, it offers improved operational stability under harsh electrical conditions. The device supports high impulse discharge current (8/20µs) and delivers excellent impulse spark-over performance (1kV/µs) for reliable surge protection.
The device features low capacitance at 1 MHz, preserving signal integrity in high-speed communication systems, while high insulation resistance minimizes leakage current and improves efficiency. Stable glow voltage and arc voltage characteristics ensure consistent operation and extended service life.
Encased in a compact 2RB-5 package, the 2R420TB-8 allows easy integration into space-constrained PCB designs. It is widely used in telecommunications equipment, power supplies, industrial automation systems, smart meters, and consumer electronics, delivering dependable surge protection and enhanced system reliability.
Key Features:
- 420V DC Spark-Over Voltage
- High impulse discharge current capability (8/20µs)
- Fast response to transient overvoltage events
- Low capacitance for signal integrity preservation
- High insulation resistance with low leakage current
- Stable glow and arc voltage characteristics
- Long service life and high reliability
- Compact 2RB-5 package
Applications:
- Telecommunications and data communication systems
- Power supply and high-voltage circuits
- Industrial automation and control equipment
- Smart meters and smart grid systems
- Consumer electronics and IoT devices
- Security and surveillance systems
