The 3R090SB-8S Gas Discharge Tube (GDT) from RUILON is a high-reliability ceramic surge protection device designed to protect sensitive 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 low-voltage applications requiring fast response and precise surge suppression.
Built with advanced gas discharge technology, the 3R090SB-8S 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 effective surge absorption and long service life.
Compared to higher voltage GDT variants, the 90V model enables earlier triggering for rapid protection against transient surges, making it especially suitable for low-voltage and sensitive electronic components. The compact 3RB-8S package supports efficient PCB design and reliable performance in space-constrained applications.
This GDT is widely used in telecommunications equipment, signal line protection, consumer electronics, industrial automation systems, and surge protection devices (SPD), delivering consistent and dependable 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 integrity
- High insulation resistance and reliability
- Compact 3RB-8S package for space-saving 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 systems
- Surge protection devices (SPD)
- Networking and communication equipment
