Tube Substitutions for:
12A4
Triode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 12A4 | 12B4 |  |
| Web References | 12A4 (Tung-Sol) @ Franks Electron Tubes 12A4 (Hytron) @ Franks Electron Tubes 12A4 @ RadioMuseum.org | |
Triode
MECHANICAL DATA
| Basing | 9AG |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 12.6/6.3 | Volts |
| Heater Current | 0.3/0.6 | A |