The 3R350A-5S is a high-reliability Gas Discharge Tube (GDT) engineered for effective surge protection in modern electronic, telecom, and industrial 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 delivers stable electrical performance, long service life, and excellent surge endurance under repeated electrical stress conditions.
This GDT features a 350V DC spark-over voltage (measured at 100V/µs), offering precise and consistent breakdown behavior for medium-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 electronic circuits where maintaining signal integrity is critical.
The 3R350A-5S provides 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 repeated surge stress, while its impulse withstand voltage rating ensures long-term reliability in harsh operating environments.
Key Features
- 350V 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-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 applications
Applications
- Telecom and communication signal protection
- Medium-voltage data and interface circuits
- Smart meters and IoT devices
- Consumer electronics and smart home systems
- Industrial automation and control systems
- Power supply protection circuits
- Networking and communication ports
- LED lighting and driver circuits
- High-speed data transmission systems
- Surge protection modules for sensitive electronics
