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IS3

Information - Help 
ID = 30336
       
Country:
Netherlands
Brand: Thermion; Netherlands
Developer: Thermion; Netherlands 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Ca. 1925 up to 1945 very rare. ***
Identical to IS3
Similar Tubes
Normally replaceable-slightly different:
  E442
Production stop Feb.1938
Successor Tubes 5-442  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect
Dimensions (WHD)
incl. pins / tip
43 x 133 x 33 mm / 1.69 x 5.24 x 1.30 inch
Weight 57 g / 2.01 oz
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 153
- - Manufacturers Literature   1931
 
is3.jpg
IS3
Peter den Boer

 
9_10~~2.png
IS3: Telefunken Werkstattbuch
Wolfgang Bauer

 
is3.png
IS3: own collection
Peter den Boer


from Just Qvigstad


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