The 3R090B-5S Gas Discharge Tube (GDT) from RUILON is a compact and high-reliability ceramic surge protection device designed to protect low-voltage electronic circuits from transient overvoltage events such as lightning strikes and switching surges. Featuring a 90V DC spark-over voltage, this component is ideal for sensitive applications requiring fast response and stable protection performance.
Built with advanced gas discharge technology, the 3R090B-5S delivers stable impulse spark-over voltage at 1KV/µs, along with high insulation resistance and low capacitance at 1 MHz, ensuring minimal signal distortion in communication and signal transmission lines. Its strong capability to withstand high impulse discharge current (8/20µs waveform) ensures efficient surge absorption and long operational life.
Compared to higher voltage GDT variants, the 90V model enables earlier triggering for effective suppression of transient surges, making it well-suited for protecting low-voltage and sensitive electronic components. The compact 3RB-5S package supports efficient PCB layout and reliable performance in space-constrained designs.
This GDT is widely used in telecommunications equipment, signal line protection, consumer electronics, industrial automation systems, and surge protection devices (SPD), delivering dependable and long-lasting circuit protection.
Key Features:
- 90V DC spark-over voltage for low-voltage protection
- Stable impulse spark-over performance (1KV/µs)
- High surge current capability (8/20µs waveform)
- Low capacitance for signal-sensitive applications
- High insulation resistance and reliability
- Compact 3RB-5S package for efficient PCB design
- Long service life with high surge endurance
Applications:
- Telecom and data communication lines
- Signal and interface protection
- Consumer electronics and smart devices
- Industrial automation and control systems
- Surge protection devices (SPD)
- Networking and communication equipment
