The JKS8-3R230-L is Gas Discharge Tube (GDT) with 8x6mm dimensions and is manufactured by Jinkaisheng. It is composed of an outer casing made of ceramic material, an inner case made of metal, commonly brass, and a glass tube (GDT element) pre-filled with gas, commonly SF6. It is RoHS (Restriction of Hazardous Substances) compliant and designed to protect electronic and electrical circuits from high voltage fluctuations, surges, and spikes, preventing damages from such events. The GDT has a high quality voltage-current characteristic and excellent electromagnetic compatibility properties, with fast and reliable switching and a wide operating temperature range.