The 2R470LB-8TH is a high-reliability Gas Discharge Tube (GDT) designed for robust surge protection in advanced electronic and industrial systems. Housed in a compact 2RL-8TH ceramic SMD package, this device provides effective over-voltage protection by safely diverting high-energy transient surges away from sensitive circuit components. Manufactured by RUILON, it ensures stable performance, long service life, and strong surge endurance under demanding operating conditions.
This GDT features a 470V DC spark-over voltage (measured at 100V/µs), providing precise and consistent triggering during over-voltage events. It also supports impulse spark-over performance at 1kV/µs, ensuring fast response to lightning-induced surges, switching transients, and electrical disturbances. With extremely low capacitance at 1 MHz, it is well-suited for high-speed communication lines, data interfaces, and sensitive electronic circuits where signal integrity is critical.
The 2R470LB-8TH offers high insulation resistance and optimized discharge characteristics, including stable glow voltage at 10mA and controlled arc voltage at 1A, ensuring efficient energy dissipation during surge events. Its high impulse discharge current capability (8/20µs waveform) enhances durability under repetitive surge stress, while its impulse withstand voltage rating provides long-term reliability in harsh electrical environments.
Key Features
- 470V DC spark-over voltage (100V/µs test condition)
- High impulse spark-over capability (1kV/µs) for fast transient response
- Ultra-low capacitance @ 1 MHz for signal integrity preservation
- High insulation resistance for stable and reliable operation
- High impulse discharge current capability (8/20µs waveform)
- Stable glow voltage and controlled arc voltage for efficient protection
- Long service life with excellent surge endurance performance
- Compact 2RL-8TH ceramic SMD package for space-saving PCB design
- High reliability under repeated surge and lightning conditions
Applications
- Telecom and communication infrastructure
- Smart meters and energy monitoring systems
- Industrial automation and control equipment
- Power supplies and AC/DC conversion systems
- Consumer electronics and smart home devices
- IoT and embedded electronic systems
- Signal line and data interface protection
- LED lighting and driver circuits
- Networking and communication ports protection
- Surge protection modules and circuit protection designs
