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6P9 / 6AG7 / 6AK7 tube. Pentode. Svetlana factory

Manufacturers: Svetlana, St. Peterburg, Russia
In Stock: 0
Price:
$2.20
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Svetlana 6P9 is a direct replacement for 6AK7 or 6AG7 pentodes. Soviets cloned these several decades ago. The tubes are NOS (New Old Stock), rather vintage but in an excellent electric condition.

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: over 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, kOm: 750

Operating environmental conditions :

Acceleration of vibration loads, g: 2.5
- by frequencies, Hz: 50
Ambient temperature, °C: -60 to +70
Relative humidity at up to 40°C, %: 98

Manufacturers: Svetlana plant
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