The 3R470A-5S is a high-performance Gas Discharge Tube (GDT) engineered for reliable surge protection in industrial, telecom, and advanced electronic systems. Designed in a compact 3RA-5S ceramic SMD package, this device provides robust over-voltage protection by safely diverting high-energy transient surges away from sensitive circuit components. Manufactured by RUILON, it ensures stable electrical behavior, long service life, and excellent surge endurance under repeated electrical stress conditions.
This GDT features a 470V DC spark-over voltage (measured at 100V/µs), delivering precise and consistent breakdown performance for medium-to-high voltage protection applications. It also supports impulse spark-over capability at 1kV/µs, ensuring fast response against lightning surges, switching transients, and electrostatic discharge events. With ultra-low capacitance at 1 MHz, it is highly suitable for high-speed communication lines, data transmission systems, and signal-sensitive circuits where maintaining signal integrity is essential.
The 3R470A-5S 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 ensures long-term operational reliability in harsh environments.
Key Features
- 470V DC spark-over voltage (100V/µs test condition)
- High impulse spark-over capability (1kV/µs) for fast surge response
- Ultra-low capacitance @ 1 MHz for excellent signal integrity
- High insulation resistance for stable medium-to-high voltage protection
- High impulse discharge current capability (8/20µs waveform)
- Stable glow and controlled arc voltage for efficient protection
- Long service life with strong repetitive surge endurance
- Compact 3RA-5S ceramic SMD package for space-saving PCB design
- High reliability in telecom, industrial, and electronic systems
Applications
- Telecom and communication signal protection
- Industrial automation and control systems
- Smart meters and energy monitoring devices
- Power supply protection circuits
- Consumer electronics and smart home systems
- Networking and communication ports
- LED lighting and driver circuits
- High-speed data transmission systems
- IoT and embedded electronic systems
- Surge protection modules for sensitive electronics
