Antique radios, Old Time Radios

C443

ID = 2749

Country:

Netherlands

Brand:	Philips; Eindhoven (tubes international!); Miniwatt
Developer:	Philips; Eindhoven (tubes international!); Miniwatt
Tube type:	Vacuum Pentode Power/Output

Identical to

C443 = RES364 = L425D = DW3 = PP430 = C453 = TC43 = RS4343 = TU430 = 4A4_Ultron

Similar Tubes

Normally replaceable-slightly different:

4B4_Ultron ; BF100_Cyrnos ; D100N ; DP3 ; M43 ; PT425_5pin ; R89 ; T55_Adzam ; TV425 ; TW425 ; UP4C ; V453

Other class quality (otherwise equal):

C443NA

Heater different:

IT103

Other base:

C443_4pin ; C443_UY

Multiple differences or of other kind:

IP3

First year

1928 -- Collector info (Sammler)

First Source (s)

Nov.1928 : - - Manufacturers Literature

Predecessor Tubes

B443

Successor Tubes

C443N

Base	Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC defined voltage)
Description	The C443 was designed for AC mains operation only, it is capable of about twice the output power of the former B443. The equivalent types RES364, L425D and PP430 appeared considerably later. [Jacob Roschÿ, 2003-01-17] The original C443 had an amplification factor of 43, the C453 had an amplification factor of 53. When an amateur in 1932 replaced a good C443 for the new C453 in order to enhance performance of his radio, nothing changed. When he scratched some paint of the top of his new C453, he saw C443 appear. There was a lot of fuss about this matter. At the end Philips apologized for redesignating a batch of C443 into C453. As for defence they stated that the C443 was that much improved, that it in fact became a new type, the C453. There was also a similar case with redesignated 506's into 1823. Vg1: -25V Vg2: 200V Va: 300V Text in other languages (may differ)
Tube prices	6 Tube prices (visible for members only)
Information source	Taschenbuch zum Röhren-Codex 1948/49


	C443: ficha de valvulas Getulio Jimenez-Gomez

C443: R.O.
Rudolf Osterkamp

C443: Telefunken Werkstattbuch
Wolfgang Bauer

C443: g.h.
Gerhard Heigl

from Just Qvigstad

Usage in Models

1= 1928?? ; 5= 1928 ; 3= 1929?? ; 1= 1929? ; 15= 1929 ; 7= 1930? ; 43= 1930 ; 1= 1931?? ; 9= 1931? ; 73= 1931 ; 2= 1932?? ; 3= 1932? ; 63= 1932 ; 3= 1933?? ; 14= 1933? ; 27= 1933 ; 1= 1934? ; 14= 1934 ; 2= 1935?? ; 3= 1935? ; 4= 1935 ; 1= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):295

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