2003 Gas Discharge Tube Surge Protectors Bourns 2003 Gas Discharge Tube Surge Protectors (GDTs) are 2-electrode GDTs designed for use in applications that may be exposed to lightning or other transients. These compact light-duty GDTs offer a maximum 2kA, 8/20µsec peak pulse current rating, fast response times, and stable performance over their extended life. The components feature extremely low capacitance and insertion loss, making them ideal overvoltage protectors for high-speed telecom equipment or industrial communications applications. Bourns 2003 GDTs are RoHS compliant.