2N4031

Silicon PNP Medium-Power RF and General-Purpose Transistor, optimized for low-distortion driver stages, linear series regulators, and medium-speed switching matrices. It manages a 60V maximum collector-emitter voltage threshold alongside a 1A continuous current rating, coordinating stable current-handling parameters across legacy electronics chassis, housed in a standard through-hole hermetic TO-39 metal can package layout. Manufactured by RCA / Central Semiconductor.