POWER PENTODE
The 3V4 Vacuum tube is a miniature type used in
the output stages of lightweight,
compact, portable, battery-operated equipment.
They require a miniature 7-contact socket.
Except for basing, it is identical to 3Q4.
Electrical Data:
Filament Voltage ....................... 2.8/1.4 DC V
Filament Current ........................ .05/.1 A
Substitutes ............... 3C4 3E5