- 2027-47-B10LF is a unidirectional Gas Discharge Tube (GDT) ideal for use as an efficient, low cost overvoltage protector. The GDT is a breakdown device where, upon high voltage surge, an arc forms between the electrodes, creating a low impedance path. This limits the surge current, protects the downstream components and absorbs the transient energy. The 2027-47-B10LF has a breakdown voltage rating of 44VDC, while its maximum discharge capabilities are 1080A(8/2us). The GDT also has a minimum response time of 13ns, making it well suited for use in high speed applications. This GDT is rated for self-restoring capabilities and has an operating temperature range between -55C to +125C.