Type | Substitutes | Base Diagram |
---|---|---|
53 | ||
Web References | 53 (RCA) @ Franks Electron Tubes 53 (RCA (HB3)) @ Franks Electron Tubes 53 (Sylvania) @ Franks Electron Tubes 53 (Tung-Sol) @ Franks Electron Tubes 53 @ RadioMuseum.org |
Basing | 7B |
Heater Voltage | 2.5 | Volts |
Heater Current | 2 | A |