Tube Substitutions for:
12BR7
Duo Diode Triode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 12BR7 | 12BR7A, 8447 |  |
| Web References | 12BR7 @ RadioMuseum.org | |
Duo Diode Triode
MECHANICAL DATA
| Basing | 9CF |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 12.6/6.3 | Volts |
| Heater Current | 0.255/0.45 | A |