SMD4042-300E 300V Gas Discharge Tube – SMD4042 Package | RUILON
RUILON
The SMD4042-300E Gas Discharge Tube (GDT) from RUILON is a high-performance ceramic surge protection device designed to protect electronic circuits from transient overvoltage events such as lightning strikes, switching surges, and electrostatic discharge (ESD). Built with advanced gas discharge technology, it ensures fast response and reliable protection in demanding environments.
With a DC spark-over voltage of 300V, this device is ideal for medium to high-voltage applications, offering a well-balanced protection threshold that prevents premature triggering while ensuring effective surge suppression. It features strong impulse spark-over performance (1kV/µs) and supports high impulse discharge current (8/20µs), making it suitable for applications exposed to frequent or high-energy surges.
The component provides low capacitance at 1 MHz, preserving signal integrity in high-speed communication systems, along with high insulation resistance to minimize leakage current. Stable glow voltage and arc voltage characteristics contribute to consistent operation and extended service life.
Encased in a compact SMD4042 package, the SMD4042-300E enables easy surface-mount installation and flexible PCB layouts. It is widely used in telecommunications, industrial automation, power systems, smart grid infrastructure, and consumer electronics, delivering dependable protection and enhanced system reliability.
Key Features:
- 300V DC Spark-Over Voltage
- High impulse discharge current capability (8/20µs)
- Fast response to transient surges
- Low capacitance for signal integrity preservation
- High insulation resistance with low leakage current
- Stable glow and arc voltage performance
- 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
