The 2R550SK-8 SMD Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection device engineered to provide superior protection against extreme transient overvoltage events such as lightning strikes, switching surges, and induced electrical disturbances. Utilizing advanced ceramic gas discharge technology, this component delivers ultra-fast switching by transitioning from a high-resistance state to a low-impedance conduction path, effectively diverting high-energy surge currents away from sensitive electronic circuits.
With a nominal spark-over voltage of approximately 550V, the 2R550SK-8 is ideal for applications requiring elevated voltage protection levels and enhanced surge tolerance compared to lower-rated GDT devices. It features high insulation resistance and ultra-low capacitance, ensuring minimal interference with high-frequency signals and preserving signal integrity in communication and data transmission systems.
Designed for long-term reliability, the device supports high impulse discharge current capability (8/20 µs waveform) and maintains stable performance under repeated surge conditions. Its controlled glow and arc voltage characteristics ensure consistent operation and extended service life in demanding environments.
The compact SMD package design allows efficient PCB integration and supports automated SMT assembly processes, making it suitable for modern compact and high-density electronics. Compared to lower voltage variants, the 2R550SK-8 provides enhanced energy handling capability and improved robustness, making it a preferred choice for industrial, telecom, and power protection applications.
Key Specifications
- Part Number: 2R550SK-8
- Type: Ceramic Gas Discharge Tube (GDT)
- Package: SMD Series
- Nominal Spark-over Voltage: ~550V
- Impulse Discharge Current: 8/20 µs waveform
- Insulation Resistance: High
- Capacitance: Ultra-low (@1 MHz)
- Arc Voltage: Stable
- Glow Voltage: Controlled characteristics
- Service Life: Long lifespan under repetitive surge stress
Key Features
- High-voltage surge protection capability
- Fast response to transient overvoltage events
- Ultra-low capacitance for high-speed signal integrity
- High insulation resistance for reliable isolation
- Compact SMD footprint for space-saving PCB layouts
- Excellent surge current handling performance
- Long operational life with consistent reliability
- Suitable for automated SMT manufacturing
Applications
- Telecom and networking equipment
- Industrial automation and control systems
- Power supply and AC/DC line protection
- Consumer electronics and appliances
- Smart grid and metering systems
- Data and signal line protection
- Lightning and transient surge suppression systems
