The CG4 series GDT is the first high-voltage, surface-mount gas discharge tube (GDT) from Littelfuse with two squared terminals, that is capable of withstanding surge currents of 3 kA at 8/20 μs in a small form factor. CG4 series, two-terminal, high-voltage miniature gas discharge tubes are high-voltage (800 V – 3000 V) devices designed for over-voltage protection for high-isolation applications.

Applications for the CG4 series GDT include appliances and white goods, such as air conditioning units; industrial systems, like high-voltage power supplies, variable frequency drivers, and high-voltage test equipment; medical electronics, such as NMR medical equipment and X-ray machines; and consumer electronics, like set-top boxes.