12B4

Vacuum Tube Type: 12B4, Filament / Heater: 12.6V at 300mA / 6.3V at 600mA, Pin Count / Base: 9-Pin Miniature (Noval / B9A), Description: Low-mu power triode designed primarily for vertical deflection amplifier circuits in television receivers, or used as a robust series pass regulator in power supplies. Equivalent: RCA 12B4 / Sylvania 12B4 / GE 12B4 / Raytheon 12B4