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E438

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ID = 1700
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Triode, vacuum   Universal 
Identical to E438 = 5-438 = RS4230 = RS4238 = W4080 = 354VX = ACR4 = W4100 = REN1004
Similar Tubes
Other shape (e.g. bulb type):
  T5-438
Normally replaceable-slightly different:
  107 ; 41MRC ; 484V ; A5004 ; AR4100 ; DW3559 ; DW4023 ; Dn404 ; E438N ; I4078 ; I503 ; M4A ; NR4 ; NW4 ; S440 ; S440N ; S440N ; TE38 ; TM-CDT1 ; VT2_Oxytron ; W307_Marathon ; W415N ; W438 ; WG43 ; WN4
Heater different:
  B2038
Other base:
  E438_4pin+1sideconn. ; E438_4pin+2sideconn. ; E438_UY
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Jul.1929 : -- Original-techn. papers.

Base Europe 5-Pin (O5A, B5) (Codex=F)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Tube prices 3 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  e438.png
  E438: Internet
Miguel Angel Trujillo-Rodriguez
 
e438_01.jpg
E438: Collection TL
Thomas Lebeth

 
7_19.png
E438: Telefunken Werkstattbuch
Wolfgang Bauer

 
e438_spec.png
E438: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1928? ; 1= 1928 ; 2= 1929?? ; 2= 1929? ; 24= 1929 ; 3= 1930?? ; 2= 1930? ; 37= 1930 ; 6= 1931? ; 35= 1931 ; 4= 1932?? ; 2= 1932? ; 15= 1932 ; 5= 1933?? ; 4= 1933? ; 9= 1933 ; 3= 1934? ; 12= 1934 ; 1= 1935?? ; 4= 1935? ; 6= 1935 ; 2= 1936 ; 1= 1937?? ; 1= 1937? ; 1= 1939

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):183


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