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ID = 18909
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Vacuum Pentode 
Identical to 6П31С = EL36

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 1.3 Ampere / Indirect
6П31С: My own photo
Josef Smitka

6П31С: rtt
Michael Schlör

6П31С: Manufacturer datasheet
Josef Smitka

Usage in Models 1= 1958? ; 2= 1960?? ; 1= 1960 ; 1= 1961?? ; 2= 1962 ; 2= 1964 ; 1= 1968?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):10

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