The P0300SB Discharge Tubes (GDT / TSS) SMB RoHS from SEMBO are gas discharge tubes designed for protecting equipment from overvoltage transients. This device can be mounted on a PCB or in an isolator. It is constructed as a Gas Discharge Tube (GDT) that contains a free-flowing gas, which results in fast response times. The device is rated for up to 100A with a maximum voltage of 3000V. The RoHS mark means that it follows the European Union's Restriction of Hazardous Substances directives and is considered to be safe for the environment.