P0900SB Discharge Tubes (GDT/TSS) SMB RoHS manufactured by Yageo are primarily used in lightning protection applications. These devices are designed to safely and quickly divert the energy from a lightning strike or similar high-voltage spike. They help protect the rest of the electrical system from damage. The Yageo P0900SB is designed in a small surface mount package (SMB) and is compliant with the RoHS directive. It has a breakdown voltage of 900V, a maximum working current of 67A, and a maximum surge current of 30kA. The device also has a very low leakage current of 30nA minutes at 600V.