(6n6C)
General
Tetrode, used in output stages of low frequency amplifiers.
Envelope: glass, with octal base.
Mass 38 g.
Lead diagram
General characteristics:
| Filament voltage, Volt | 6.3 |
| Anode voltage, Volt | 250 |
| 1st grid voltage, Volt | -12.5 |
| 2nd grid voltage, Volt | 250 |
| Filament (heater) current, mA | 475±40 |
| Anode current, mA | 46±13 |
| 2nd grid current, mA | no more than 7.5 |
| 1st grid reverse current, mkA | £ 2 |
| Mutual conductance, mA/V | 3 to 5.2 |
| Output power, W | no less than 3.6 |
| Internal resistance, kΩ | 5.2 |
| Inter electrode capacitance, pF: | |
| input | 9.5±1.6 |
| output | 3.8 to 9.2 |
| transfer | no more than 0.9 |
| Operation time, h | ³ 1000 |
Limited operating values:
| Filament voltage, V | 5,7-6.9 |
| Anode voltage, V | 350 |
| 2nd grid voltage, V | 310 |
| Cathode - heater voltage, V | 180 |
| Anode dissipation, W | 13.2 |
| 2nd grid dissipation, W | 2.2 |
| Resistance in 1st grid circuit, kΩ | 500 |
Operating environmental conditions :
| Acceleration of vibration loads, g | 2.5 |
| by frequencies, Hz | 50 |
| Ambient temperature, °Ñ | -60 to +70 |
| Relative humidity at up to 40°C, % | 98 |
Plate and plate-grid curves
