The 2R470SK-5 SMD Gas Discharge Tube (GDT) from RUILON is a high-voltage surge protection component engineered to provide reliable defense against transient overvoltage events such as lightning strikes, switching surges, and electrical disturbances. Built using advanced ceramic gas discharge technology, this device delivers ultra-fast switching performance by transitioning from a high-resistance state to a low-impedance conduction path, effectively diverting surge energy away from sensitive circuitry.
With a nominal spark-over voltage of approximately 470V, the 2R470SK-5 is ideal for applications requiring elevated voltage protection levels. Compared to lower-voltage GDT variants, it offers enhanced surge handling capability and improved durability, making it suitable for industrial, telecom, and power line protection systems. The device also features high insulation resistance and ultra-low capacitance, ensuring minimal signal interference in high-frequency communication and data transmission applications.
Designed for long-term reliability, the component supports high impulse discharge current capability (8/20 µs waveform) and maintains consistent performance under repetitive surge exposure. Its stable glow and arc voltage characteristics contribute to extended service life and dependable operation.
The compact SMD package design enables easy integration into modern PCB layouts and supports automated SMT assembly processes, making it ideal for space-constrained and high-density electronic designs.
Key Specifications
- Part Number: 2R470SK-5
- 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 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
