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Information - Help 
ID = 56252
Brand: Common type Australia tube/semicond.
Tube type:  Television picture tube black+white   Indication 
Identical to 12DNP4

Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.08 Ampere
Description 12 inch 110 degree TV tube. 
Dimensions (WHD)
incl. pins / tip
270 x 215 x 240 mm / 10.63 x 8.46 x 9.45 inch
Information source -- Collector info (Sammler)   

12dnp4_pin_connections.png 12DNP4: GE Essential Characteristics 14th Ed. P472
Stuart Irwin

Usage in Models 1= 1969 ; 1= 1970 ; 1= 1972

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 2
Hits: 1904     Replies: 1
12DNP4 (12DNP4)
Stuart Irwin


I notice that this tube is listed as a "Common type USA tube" but I believe it should be listed under the brand of "Thomas Electronics of Australia".  The reason is that, as far as I can find out, it was only used on one Australian made television (HMV Z1) and it is not listed in USA tube lists.  I have one of these tubes (see photo) and it is branded "Thomas".



Emilio Ciardiello

You are right: this CRT was not registered in USA. I moved it to 'Common production Australia'.


Many thanks, Emilio

End of forum contributions about this tube

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