6N9S (6H9C)
General
Double triodes, used as an low frequency power amplifier.
Envelope: glass.
Mass 34 g.
Lead diagram
General characteristics
| Type | 6N9S |
| Filament voltage, Volt | 6.3 |
| Anode voltage, Volt | 250 |
| Grid voltage, Volt | -2 |
| Resistance in cathode circuit, Ohm | -- |
| Type | 6N9S |
| Filament (heater) current, mA | 300 |
| Anode current, mA | 2.3 |
| Reverse grid current, mkA | £1 |
| Dissipate cathode-heater current, mkA | £20 |
| Mutual conductance, mA/V | 1.7 |
| Gain coefficient | 70 |
| Vibration noise (by RA=2 kOhm), mV | £400 |
| Inter electrode capacitance, pF: input |
2.5 |
| output | 1 |
| transfer | 4 |
| Operation time, h | ³1500 |
Limited operating values
| Type | 6N9S |
| Filament voltage, V | 5,7-7 |
| Anode voltage, V | 275 |
| Cathode - heater voltage, V | 100 |
| Anode dissipation, W | 1.1 |
| Resistance in grid circuit, MOhm | 0.5 |
Operating environmental conditions
| Type | 6N9S |
| Acceleration of vibration loads, g | 2,5 |
| by frequencies, Hz | 10-150 |
| Acceleration of multiple impacts, g | 35 |
| Ambient temperature, °Ñ | -60 to +70 |
| Relative humidity at up to 40°C, % | 98 |
Plate-grid and plate curves
Plate curves Plate-grid curves