| Type | Substitutes | Base Diagram |
|---|---|---|
| 6L6GC | 6L6A, 6L6G, 6L6GA, 6L6GAY, 6L6GB, 6L6, 6L6GT, 6L6GX, 6L6Y, 5881, 7581, 7581A |  |
| Web References | 6L6GC (Mazda-Belvu) @ Franks Electron Tubes 6L6GC (RCA (HB3)) @ Franks Electron Tubes 6L6GC (Ei) @ Franks Electron Tubes 6L6GC (Tung-Sol) @ Franks Electron Tubes 6L6GC (RCA (RC30)) @ Franks Electron Tubes 6L6GC @ RadioMuseum.org | |
| Bulb | T-12 |
| Base | Intermediate Shell Octal |
| Basing | 7S |
| Mounting Position | Any |
| Heater Voltage | 6.3 | Volts |
| Heater Current | 900 | Ma |
| Grid No. 1 to Plate | 0.6 | ��f |
| Grid No. 1 to all but plate | 10 | ��f |
| Plate to all but Grid No. 1 | 6.5 | ��f |
| Plate Voltage | 500 | Volts |
| Grid No. 2 (Screen-Grid) Voltage | 4501 | Volts |
| Plate Dissipation | 30 | Watts |
| Grid No. 2 Input | 5 | Watts |
| Peak Heater Cathode Voltage Negative | 200 | Volts |
| Peak Heater Cathode Voltage Positive | 200 | Volts |
| Plate Voltage | 350 | Volts |
| Grid No. 2 Voltage | 250 | Volts |
| Grid No. 1 (Control-Grid) Voltage | -18 | Volts |
| Peak AF Grid No. 1 Voltage | 18 | Volts |
| Zero Signal Plate Current | 54 | Ma |
| Max Signal Plate Current | 66 | Ma |
| Zero Signal Grid No. 2 Current | 2.5 | Ma |
| Max Signal Grid No. 2 Current | 7 | Ma |
| Plate Resistance (Approx.) | 33000 | Ohms |
| Transconductance | 5200 | �mhos |
| Load Resistance | 4200 | ohms |
| Total Harmonic Distortion | 15 | Percent |
| Maximum Signal Power Output | 10.8 | Watts |
| Plate Voltage | 250 | Volts |
| Grid No. 1 Voltage | -20 | Volts |
| Peak AF Grid No. 1 Voltage | 20 | Volts |
| Zero-Signal Plate Current | 40 | Ma |
| Max-Signal Plate Current | 44 | Ma |
| Plate Resistance (Approx.) | 1700 | Ohms |
| Amplification Factor | 8 | X |
| Transconductance | 4700 | �mhos |
| Load Resistance | 5000 | ohms |
| Total Harmonic Distortion | 5 | Percent |
| Maximum Signal Power Output | 1.4 | Watts |
| Plate Voltage | 270 | Volts |
| Grid No. 2 Voltage | 270 | Volts |
| Grid No. 1 Voltage | -17.5 | Volts |
| Peak AF Grid No. 1 to Grid No. 1 Voltage | 35 | Volts |
| Zero Signal Plate Current | 134 | Ma |
| Max Signal Plate Current | 155 | Ma |
| Zero Signal Grid No. 2 Current | 11 | Ma |
| Max Signal Grid No. 2 Current | 17 | Ma |
| Effective Load Resistance (Plate to Plate) | 5000 | Ohms |
| Total Harmonic Distortion | 2 | Percent |
| Maximum Signal Power Output | 17.5 | Watts |
| Plate Voltage | 450 | Volts |
| Grid No. 2 Voltage | 400 | Volts |
| Grid No. 1 Voltage | -37 | Volts |
| Peak AF Grid No. 1 to Grid No. 1 Voltage | 70 | Volts |
| Zero-Signal Plate Current | 116 | Ma |
| Maximum Signal Plate Current | 210 | Ma |
| Zero Signal Grid No. 2 Current | 5.6 | Ma |
| Maximum Signal Grid No. 2 Current | 22 | Ma |
| Effective Load Resistance (Plate to Plate) | 5600 | Ohms |
| Total Harmonic Distortion | 1.8 | Percent |
| Maximum Signal Power Output | 55 | Watts |
| Plate Voltage | 360 | Volts |
| Grid No. 2 Voltage | 270 | Volts |
| Grid No. 1 Voltage | -22.5 | Volts |
| Peak AF Grid No. 1 to Grid No. 1 Voltage | 72 | Volts |
| Zero Signal Plate Current | 88 | Ma |
| Max Signal Plate Current | 205 | Ma |
| Zero Signal Grid No. 2 Current | 5 | Ma |
| Max Signal Grid No. 2 Current | 16 | Ma |
| Effective Load Resistance (Plate to Plate) | 3800 | Ohms |
| Total Harmonic Distortion | 2 | Percent |
| Maximum Signal Power Output | 47 | Watts |
| Grid No. 1 Circuit Resistance, Fixed Bias | 0.1 | Megohm |
| Grid NO. 1 Circuit Resistance, Cathode Bias | 0.5 | Megohm |
| 1 | In push-pull circuits where grid No. 2 of each tube is connected to a tap on the plate winding of the output transformer, this maximum rating is 500 Volts. |
| 2 | Grid No. 2 connected to plate. |