Power Beam Amplifier Pentode
Black Plate Tubes
These are Black Plate tubes from various manufacturers based in the
United States back in the 1950's through 1970's. These
are the Good Ol' USA high quality branded tubes.
The 6BQ5 / EL84 Vacuum tube is a miniature type used
in the output stage of audio-frequency amplifiers.
They require a miniature 9-contact socket.
Electrical Data:
Heater Voltage ............................ 6.3 V
Heater Current ........................... 0.76 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component .............................. 100 V
Total DC and Peak ......................... 100 V
Heater Negative with Respect to Cathode
Total DC and Peak ......................... 100 V
Preferred Substitutes .........
EL84, 6BQ5, 6N14N, 6P14P, 7189