6P3C-1 (closest to Cyrillic way of writting)

(pronounced as ‘6R3S-1’)

Double beam tetrode for output stages of low frequency amplifiers.

Envelope: glass.

Mass 100 g.

**Lead diagram**

**General characteristics:**

Filament voltage in case of series connection, Volt | 6.3 |

Filament voltage with filament placed in parallel, Volt | 12.6 |

Anode voltage, Volt | 350 |

1^{st} grid voltage, Volt |
-22 |

2^{nd} grid voltage, Volt |
200 |

Filament (heater) current in case of series connection, A | 1.05±0.15 |

Filament (heater) current with filament placed in parallel, A | 2.1±0.3 |

Anode current of each tetrode, mA | 47.5±17.5 |

2^{nd} grid current (U_{C1}=0V), mA |
no more than 60 |

Gain coefficient of 1^{st} grid relatively to 2^{nd} grid |
10 |

Reverse 1^{st} grid current, mkA |
no more than 0,5 |

Vibration noise (at R_{A}=2 kOhm), mV |
no more than 800 |

Inter electrode capacitance, pF: | |

input | 13±3 |

output | 6±2 |

transfer | no more than 0,3 |

Operation time, h | ≥1000 |

**Limited operating values:**

Filament voltage in case of series connection, V | 5,7 to 6,8 |

Filament voltage with filament placed in parallel, V | 11.4 to 13.8 |

Anode voltage, V | 600 |

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

1^{st} grid voltage, V |
-175 |

Cathode – heater voltage, V | 100 |

Cathode current (average/peak), mA | 250/1500 |

Each anode dissipation, W | 20 |

1^{st} grid dissipation, W |
1 |

2^{nd} grid dissipation, W |
7 |

**Operating environmental conditions:**

Acceleration of vibration loads, g | 2.5 |

at the frequencies, Hz | 5-200 |

Acceleration of multiple impacts, g | 12 |

Ambient temperature, °C | –60 to +100 |

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

Tubes operating temperature, °C | 250 |

Cathode heating time, s | 90 |

CURVES

Plate curves

Plate-grid curves