SMD4042-350E 350V Gas Discharge Tube – SMD4042 Package | RUILON
RUILON
The SMD4042-350E Gas Discharge Tube (GDT) from RUILON is a high-reliability ceramic surge protection component designed to shield electronic circuits from high-energy transient overvoltage events. Utilizing advanced gas discharge technology, it provides rapid response to lightning strikes, switching surges, and electrostatic discharge (ESD), ensuring consistent and long-term protection.
With a DC spark-over voltage of 350V, this device is well-suited for medium to high-voltage applications, offering an optimal balance between protection sensitivity and operational stability. Compared to lower-voltage GDTs, it reduces the risk of false triggering while maintaining strong surge suppression capability. The component supports high impulse discharge current (8/20µs) and features excellent impulse spark-over performance (1kV/µs), making it ideal for harsh electrical environments.
The device features low capacitance at 1 MHz, preserving signal integrity in high-speed communication systems, while high insulation resistance minimizes leakage current and enhances efficiency. Stable glow voltage and arc voltage characteristics contribute to long service life and reliable operation.
Housed in a compact SMD4042 package, the SMD4042-350E allows easy surface-mount assembly and flexible PCB design. It is widely used in telecommunications, industrial automation, power supplies, smart grid infrastructure, and consumer electronics, delivering dependable surge protection and improved system reliability.
Key Features:
- 350V DC Spark-Over Voltage
- High impulse discharge current capability (8/20µs)
- Fast response to transient overvoltage events
- Low capacitance for signal integrity preservation
- High insulation resistance with low leakage current
- Stable glow and arc voltage characteristics
- Long service life and high reliability
- Compact SMD4042 surface-mount package
Applications:
- Telecommunications and data communication systems
- Power supply and adapter circuits
- Industrial automation and control equipment
- Smart meters and smart grid systems
- Consumer electronics and IoT devices
- Security and surveillance systems
