Tube Substitutions for:
12BR7A
Duo Diode Triode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 12BR7A | 12BR7*† |  |
| Notes: | * - Parallel filaments † - Series circuit no controlled warm-up | |
| Web References | 12BR7A (Philco) @ Franks Electron Tubes 12BR7A @ 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 |