The 3R400A-5SS Gas Discharge Tube (GDT) from RUILON is a high-reliability ceramic surge protection device designed to protect electronic systems from transient overvoltage events such as lightning strikes and switching surges. Featuring a 400V DC spark-over voltage, this component is ideal for medium- to high-voltage applications requiring stable and efficient surge suppression.
Built with advanced gas discharge technology, the 3R400A-5SS 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 control circuits. Its strong capability to withstand high impulse discharge current (8/20µs waveform) ensures reliable surge absorption and long service life.
Compared to lower voltage GDT variants, the 400V model offers improved resistance to false triggering in higher voltage environments while maintaining consistent protection performance. The compact 3RA-5SS package supports efficient PCB layout and dependable operation in space-constrained designs.
This GDT is widely used in telecommunications equipment, power supplies, industrial automation systems, signal line protection, and surge protection devices (SPD), delivering consistent and long-lasting circuit protection.
Key Features:
- 400V DC spark-over voltage for stable surge 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 3RA-5SS package for efficient PCB design
- Long service life with high surge endurance
Applications:
- Telecom and networking equipment
- Power supply and adapter protection
- Industrial automation systems
- Signal and data line protection
- Surge protection devices (SPD)
- Consumer and communication electronics
