(6n3C, 6n3C-E)

**General
Tetrode**, used in output stages of low frequency amplifiers.

Envelope: glass, with octal base.

Mass 70 g.

**Lead diagram**

General characteristics:

Type | 6P3S | 6P3S-E |

Filament voltage, Volt | 6.3 | 6.3 |

Anode voltage, Volt | 250 | 250 |

1^{st} grid voltage, Volt |
-14 | -14 |

2^{nd} grid voltage, Volt |
250 | 250 |

Type | 6P3S | 6P3S-E |

Filament (heater) current, mA | 900±90 | 880±40 |

Anode current, mA | 72±18 | 73±13 |

2^{nd} grid current, mA |
no more than 9 | no more than 6 |

1^{st} grid reverse current, mkA |
£ 3 | £ 0.5 |

Cathode current, mA | no less than 275 | - |

Output power, W | no less than 5.4 | no less than 5.8 |

Mutual conductance, mA/V | 5.2 to 6.8 | 5.2 to 6.8 |

Internal resistance, kΩ | 25 | no more than 65 |

Inter electrode capacitance, pF: | ||

input | 11±2 | 11 |

output | 8.2±1.5 | 6.7 |

transfer | no more than 1 | no more than 1 |

Operation time, h | ³ 1000 | ³ 5000 |

Limited operating values:

Type | 6P3S | 6P3S-E | ||

Filament voltage, V | 5,7-7 | 6-6.6 | ||

Anode voltage, V | 375 | 250 | ||

2^{nd} grid voltage, V |
300 | 250 | ||

Cathode - heater voltage, V | 100 | 90 / -200 | ||

Cathode current, mA | - | 90 | ||

Anode dissipation, W | 20 | 20.5 | ||

2^{nd} grid dissipation, W |
2.75 | 2 | ||

Resistance in 1^{st} grid circuit, kΩ |
500 | 150 |

Operating environmental conditions :

Type | 6P3S | 6P3S-E |

Acceleration of vibration loads, g | 1.5 | 3 |

by frequencies, Hz | 50 | 5 to 300 |

Acceleration of multiple impacts, g | - | 12 |

Acceleration of single impact, g | - | 100 |

Continuos acceleration, g | - | 100 |

Ambient temperature, °Ñ | -60 to +70 | -60 to +160 |

Relative humidity at up to 40°C, % | 98 | 98 |

**Plate and plate-grid curves**