6S31B-R Russian Triode Tubes Lot of 4 NEW

6S31B-R Russian Triode Tubes Lot of 4 NEW


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6S31B-R Russian  Miniature HI-Durable  Triode Tubes


Lot of 4

The same date code

New, old stock.The tubes are never used

6S31B-R is a superior single triode for any application, where high transconductance is the demand.

The best triode in the world for building of a low impedance SRPP stage

Use in legendary LOMO 19a19 microphone

Long life > 5000 hours

Name 6S31B-R
Type triode,hi-durable
Application LF voltage amplification
Cathode type oxide,indirect heating
Envelope glass,miniature
Mass,g 4,5
Filament voltage,V 6,3
Filament current,A 0,2-0,24
Anode voltage,V 50
Anode current,A 0,03-0,05
Anode power,W 2,5
Grid1 voltage,V 0
Steepness,mA/V 13,0-24,0
Reverse grid current,uA 0,2
Microphnic noise,mV 15
Gain 12,0-22,0
Socket type flexible


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