(6n9)
General
Pentode, used in output stages of wide band amplifiers and in TV videoamplifiers.
Envelope: metal cover, with octal base.
Mass 47 g.
Lead diagram
General characteristics:
| Filament voltage, Volt | 6.3 |
| Anode voltage, Volt | 300 |
| 1st grid voltage, Volt | -3 |
| 2nd grid voltage, Volt | 150 |
| 3rd grid voltage, Volt | 0 |
| Filament (heater) current, mA | 650±40 |
| Anode current, mA | 20±10 |
| 2nd grid current, mA | 4 to 9 |
| 1st grid reverse current, mkA | £ 2 |
| Dissipate cathode-heater current, mkA | £ 40 |
| Mutual conductance, mA/V | 9 to 14 |
| Output power, W | no less than 2.4 |
| Inter electrode capacitance, pF: | |
| input | 13±1.5 |
| output | 7.5±1 |
| transfer | no more than 0.06 |
| Operation time, h | ³ 2000 |
Limited operating values:
| Filament voltage, V | 5,7-6.9 |
| Anode voltage, V | 330 |
| 2nd grid voltage, V | 330 |
| Cathode - heater voltage, V | 100 |
| Anode dissipation, W | 9 |
| 2nd grid dissipation, W | 1.5 |
| Resistance in 1st grid circuit, kΩ | 750 |
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
