12BH7

Medium-Mu Dual Triode Amplifier Tube, featuring an extended plate structure capable of handling high voltage pulses. Operating with a 12.6V center-tapped heater, it is optimized for use as a vertical deflection amplifier, sync separator, or high-drive audio phase inverter in television and stereo gear, housed in a standard 9-pin miniature glass envelope (Noval, T-6.5 bulb).