SMD4532-120NF Gas Discharge Tubes – SMD4532 Package | RUILON

The SMD4532-120NF Gas Discharge Tube (GDT) from RUILON is a high-reliability surge protection device engineered to protect electronic circuits from lightning strikes, transient overvoltage, and high-energy surge events. With a nominal DC spark-over voltage of 120V (tested at 100V/µs), it provides fast and accurate response, effectively diverting surge currents away from sensitive components and ensuring system stability.

Utilizing advanced ceramic gas discharge technology, the SMD4532-120NF delivers stable impulse spark-over performance at 1kV/µs, along with high insulation resistance and low capacitance at 1 MHz. These characteristics make it ideal for high-speed communication systems and precision electronics where signal integrity is critical. Its strong impulse discharge current capability (8/20µs waveform) and excellent impulse withstanding voltage ensure long service life and consistent protection even under repeated surge conditions.

Compared to lower voltage variants, the 120V model offers increased voltage tolerance and improved protection margins, making it suitable for a wide range of industrial and power-related applications. The SMD4532 package enhances thermal dissipation, supports higher surge handling capability, and provides robust mechanical strength, while enabling efficient surface-mount assembly for modern PCB designs.

Key Features:

• DC Spark-Over Voltage: 120V @ 100V/µS
• Stable impulse spark-over voltage @ 1kV/µS
• High surge current capability (8/20µS)
• Low capacitance @ 1 MHz for signal integrity
• High insulation resistance
• Enhanced thermal performance (SMD4532 package)
• Long service life and high reliability

Applications:

• Telecom and networking infrastructure
• Industrial control and automation systems
• Power supply and inverter protection
• Smart grid and metering systems
• Consumer electronics and IoT devices
• Lightning and surge protection circuits