The 3R090A-5S is a high-reliability low-voltage Gas Discharge Tube (GDT) designed for effective surge protection in modern electronic, telecom, and communication systems. Built 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 performance, long service life, and consistent electrical behavior under repeated surge stress.
This GDT features a 90V DC spark-over voltage (measured at 100V/µs), making it ideal for protecting low-voltage signal lines and sensitive electronic interfaces. 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 well-suited for high-speed data transmission and communication circuits where signal integrity must be preserved.
The 3R090A-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 exposure, while its impulse withstand voltage rating ensures long-term operational reliability in harsh environments.
Key Features
- 90V 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 low-voltage operation
- 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 and electronic protection applications
Applications
- Telecom and communication signal protection
- Low-voltage data and interface circuits
- Smart meters and IoT devices
- Consumer electronics and smart home systems
- Industrial automation and control systems
- Power supply input/output protection
- Networking and communication ports
- LED lighting and driver circuits
- High-speed data transmission systems
- Surge protection modules for sensitive electronics
