High-Mu Twin Triode
The 12AZ7 / 12AZ7A Vacuum tube is a miniature type used
in direct-coupled cathode-drive RF amplifier circuits of
VHF Tv tuners. It requires a miniature 9-contact socket.
Electrical Data:
Heater Voltage .......................... 6.3 / 12.6 V
Heater Current ........................ 0.45 / 0.225 A
Preferred Substitutes ..................... 12AT7
Substitutes ............................... 12AU7