Littelfuse's SL1010A series gas discharge tube (GDT) is a small-footprint, three-terminal, surface-mount component that protects a broad range of communication equipment from damage due to fast-rising transients typically caused by lightning disturbances. It is rated to withstand lightning surge currents of 5 kA at 8/20 µs. At just 5 mm in diameter, the three-terminal SL1010A series GDT is ideal for small form factor applications that require both high-energy withstanding capability and a compact footprint.