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6P30B

General
Pentode
, used in output stages of low frequency amplifiers.
Envelope: glass, subminiature.
Mass 6.5 g.

Lead diagram

General characteristics:

Filament voltage, Volt 6.3
Anode voltage, Volt 120
2nd grid voltage, Volt 120
Resistance in cathode circuit, Ω 330

Filament (heater) current, mA 39535
Anode current, mA 358
2nd grid current, mA 0.5 to 2
Reverse 1st grid current, mkA no more than 0.5
Dissipate cathode-heater current, mkA ≤30
Mutual conductance, mA/V 3.4 to 5.5
Inter electrode capacitance, pF:  
input 123
output 3.3 to 6
transfer ≤0.6
Operation time, h ³1000

Limited operating values:

Filament voltage, V 5,7-7
Anode voltage, V 250
2nd grid voltage, V 250
Cathode - heater voltage, V 200
Anode dissipation, W 5.5
2nd grid dissipation, W 2
Cathode current, mA 60

Operating environmental conditions :

Acceleration of vibration loads, g 15
by frequencies, Hz 5 to 1000
Acceleration of multiple impacts, g 150
Acceleration of single impact, g 500
Continuos acceleration, g 100
Ambient temperature, -60 to +125
Relative humidity at up to 40C, % 98

Plate and plate-grid curves