radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

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

More ...

Collection of

 
rtr4142_tube.jpg

 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  

Data Compliance More Information