The 2R400SK-8 SMD Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection component engineered to safeguard sensitive electronic systems from transient overvoltage events such as lightning strikes, switching surges, and induced electrical disturbances. Built with advanced ceramic gas discharge technology, this device ensures rapid transition from a high-resistance state to a low-impedance conduction mode, effectively diverting high-energy surges away from critical circuitry.
Featuring a nominal spark-over voltage of approximately 400V, the 2R400SK-8 is ideal for applications requiring elevated voltage protection levels compared to lower-rated GDT devices. It offers high insulation resistance and ultra-low capacitance, ensuring minimal impact on signal integrity in high-frequency communication and data lines.
Designed for durability and consistent performance, the device supports high impulse discharge current capability (8/20 µs waveform) and withstands repetitive surge events without degradation. Its stable glow and arc voltage characteristics enhance reliability in harsh electrical environments.
The compact SMD package design allows seamless integration into modern PCB layouts while supporting automated SMT assembly processes. Compared to lower voltage variants, the 2R400SK-8 delivers enhanced surge handling capability and long-term reliability, making it an excellent choice for industrial, telecom, and power protection systems.
Key Specifications
- Part Number: 2R400SK-8
- Type: Ceramic Gas Discharge Tube (GDT)
- Package: SMD Series
- Nominal Spark-over Voltage: ~400V
- 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
