5U4GB

Heavy-Duty Full-Wave Vacuum Rectifier Diode, engineered to convert high-current alternating current into stable direct current. Operating with a 5.0V heater, it handles a massive maximum DC output current of 275mA, serving as a primary high-power B+ supply regulator inside deluxe jukeboxes, guitar amplifiers, and large color television chassis, housed in a standard large 8-pin Octal-style base glass envelope (T-12 bulb).