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

F203

Information - Help 
ID = 30049
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to F203 = UX245
Similar Tubes
Normally replaceable-slightly different:
  445 ; CX345 ; F203A ; F203G ; FX245 ; L45 ; S205
Other base:
  F203_B4
First Source (s)
Aug.1930 : Philips Bulletin Tube equivalents1164, p. 10
Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.5 Ampere / Direct / Specified voltage AC/DC
Description

This tube is the Philips equivalent of the RCA UX245

 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 90, p.124
- - Manufacturers Literature   Philips Australia RIF26
-- Collector info (Sammler)
Röhren-Vademecum; P.H. Brans; Antwerpen
ux4_13.png F203
Peter den Boer † 2025

Just Qvigstad 		f704c603f203data_2.png
F203: own collection
Peter den Boer † 2025
Usage in Models 2= 1930 ; 1= 1931
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

Fin Stewart (AUS)
Collection of a member from D
 
f203_philips_1.jpg

F203
 
Forum contributions about this tube
F203
Threads: 2 | Posts: 3
Hits: 3240     Replies: 0
F203 (F203)
Stuart Irwin
10.Jan.12 		  1
F203 (F203) 

Hello Jacob,

Thanks for that.

Regards,

Stuart
 
Hits: 3039     Replies: 1
F203 (F203)
Stuart Irwin
09.Jan.12 		  1
F203 (F203) 

Hello,

This valve is stated under "Base" as having a European four pin base.  However, the illustrations and base pinout diagram show a UX type base.  This valve is a direct equivalent of the UX245 so the UX type base is correct.  I have not been able to determine whether this type was made with the European 4 pin base.  Also listed on Radiomuseum.org is an F203A however, the valve in the photos is marked F203.  I think that these photos should be transferred to the F203 page.

Regards,

Stuart Irwin
Jacob Roschy
09.Jan.12 		  2
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° 

Hello Stuart,

I have corrected the base type, as well I moved the photos from the F203A page to the F203 page. There is no information available about the differences between the F203 and the F203A, but I can hardly imagine there are big differences.

Best Regards, Jacob

 
F203
End of forum contributions about this tube
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