Type | Substitutes | Base Diagram |
---|---|---|
7B4 | 7A4§, XXL§ | |
Notes: | § - May not work in all circuits | |
Web References | 7B4 (Sylvania) @ Franks Electron Tubes 7B4 (Tung-Sol) @ Franks Electron Tubes 7B4 @ RadioMuseum.org |
Basing | 5AC |
Heater Voltage | 6.3 | Volts |
Heater Current | 0.3 | A |