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6P31S

6n31C (Analogue of EL36)

General

Beam tetrode, used in output stages of line scanning of TV with 1100.
Envelope: glass.
Mass 45 g.

Lead diagram

General characteristics:

Type 6n31C
Filament voltage, Volt 6.3
Filament (heater) current, mA 1.3 0.15
Anode voltage, Volt 100
Anode current, mA 80 30
1st Grid voltage, Volt - 9
Reverse 1st grid current, mkA no more than 2
2nd Grid voltage, Volt 100
2nd Grid current, mA no more than 8
Dissipate cathode-heater current, mkA no more than 100
Mutual conductance, mA/V 12.5 4
Internal resistance , kOhm no more than 4
Inter electrode capacitance, pF:  
input 18 3
output 8.5 1.5
transfer no more than 1.3
Operation time, h no less than 700

Limited operating values:

Type 6n31C
Filament voltage, V 5.7 to 6.9
Anode voltage, V 300
Pulse anode voltage, V 7000
2nd grid voltage, V 250
1st grid voltage, V -150
Cathode heater voltage, V 200
Cathode current, mA  
in pulse 0.6
average 0.2
Anode dissipation, W 10
2nd grid dissipation, W 4
1st grid dissipation, W 0.2

Operating environmental conditions :

Type 6n31C
Acceleration of vibration loads, g 6
at the frequencies, Hz 20 to 250
Acceleration of multiple impacts, g 75
Acceleration of single impact, g --
Continuos acceleration, g 100
Ambient temperature, C 60 to +250
Relative humidity at up to 40C, % 98

Plate-grid and plate curves

Plate curvesPlate-grid curves