The 2R400TB-8 with Gas Discharge Tubes (GDTs) Axial RoHS is a type of GDT manufactured by Ruilongyuan. It is an axial type GDT with a Resistance of 400 ohms and a breakdown voltage of 8kV. It has a big current rating of 900 mA, has an isolation of 500V, and has RoHS compliance. The package is designed with two leads coming out of the metallic tube that houses the insulator, arcs, and electrodes. This GDT is used in power supplies, lighting systems, and motor drives, and can handle overvoltage and short circuit protection, as well as radio frequency interference suppression.