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RTR4142

Information - Help 
ID = 37770
       
Country:
Sweden
Brand: SER, AB Svenska Elektronrör (before Svenska Radio AB); Stockholm
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to RTR4142
Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 5.25 Volts / If 0.38 Ampere / Indirect / Specified voltage AC/DC
Description Typ Ia=15mA; gm=2.7mA/V at Va=Vs=130V and -Vg=8V.
Va =400V max; Vs =300V max. 
Dimensions (WHD)
incl. pins / tip		 40 x 113 x mm / 1.57 x 4.45 x inch
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   
rtr4142_pinout.png RTR4142: From my schematic collection.
Pier Antonio Aluffi

Just Qvigstad 		rtr_4142_characteristics.png
RTR4142: My schematic collection.
Pier Antonio Aluffi
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Collection of

Ludvig Rylander (S)
Stig Comstedt (S)
 
rtr4142_tube.jpg

 
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