The 2R470SK-8 SMD Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection component designed to safeguard sensitive electronic systems from transient overvoltage events such as lightning strikes, switching surges, and electrical disturbances. Utilizing advanced ceramic gas discharge technology, this device provides ultra-fast switching by transitioning from a high-resistance state to a low-impedance conduction path, effectively diverting high-energy surges away from critical circuitry.
With a nominal spark-over voltage of approximately 470V, the 2R470SK-8 is well-suited for applications requiring elevated voltage protection levels. Compared to lower-rated GDT devices, it offers enhanced surge handling capability and improved durability, making it ideal for industrial, telecom, and power line protection systems. Additionally, its high insulation resistance and ultra-low capacitance ensure minimal signal interference, preserving signal integrity in high-frequency communication lines.
Engineered for reliability, the device supports high impulse discharge current capability (8/20 µs waveform) and maintains stable performance under repeated surge exposure. Its consistent glow and arc voltage characteristics contribute to long service life and dependable operation in demanding environments.
The compact SMD package design allows seamless integration into modern PCB layouts and supports automated SMT assembly processes, making it ideal for compact and high-density electronic designs.
Key Specifications
- Part Number: 2R470SK-8
- Type: Ceramic Gas Discharge Tube (GDT)
- Package: SMD Series
- Nominal Spark-over Voltage: ~470V
- 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 lines
- 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
