Type | Substitutes | Base Diagram |
---|---|---|
25A6 | 25W6, 25A6G, 25A6GT, 25A6GT/G, 25A6MG | |
Web References | 25A6 (RCA) @ Franks Electron Tubes 25A6 (RCA (HB3)) @ Franks Electron Tubes 25A6 (Sylvania) @ Franks Electron Tubes 25A6 (Tung-Sol) @ Franks Electron Tubes 25A6 @ RadioMuseum.org |
Bulb | MT-8B |
Base | 7-Prong Octal Base |
Basing | 7S |
Heater Voltage | 25.3 | Volts |
Heater Current | 0.3 | Amps |
Plate Voltage | 160 | Volts |
Screen Voltage | 135 | Max |
Plate Dissipation | 5.3 | Watts |
Screen Dissipation | 1.9 | Watts |
Plate Voltage | 95 | 135 | 160 | Volts |
Screen Voltage | 95 | 135 | 120 | Volts |
Grid Voltage | -15 | -20 | -18 | Volts |
Peak A-F Grid Voltage | 15 | 20 | 18 | Volts |
Zero-Signal Plate Current | 20 | 27 | 33 | Ma |
Max-Signal Plate Current | 22 | 29 | 36 | Ma |
Zero-Signal Screen Current | 4 | 8 | 6.5 | Ma |
Max-Signal Screen Current | 8 | 14 | 12 | Ma |
Plate Resistance (Approx.) | 45000 | 35000 | 42000 | Ohms |
Transconductance | 2000 | 2450 | 2375 | �mhos |
Load Resistance | 4500 | 4000 | 5000 | Ohms |
Total Harmonic Distortion | 11 | 9 | 10 | Percent |
Max-Signal Power Output | 0.9 | 2.0 | 2.2 | Watts |