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Information - Help 
ID = 18527
Brand: Common type Worldwide tube/semicond.
Tube type:  Beam Power Tube   Power/Output 
Identical to 19AQ5 = HL90
Similar Tubes
Heater different:
  6AQ5 ; EL90
First Source (s)
Sep.1950 : Electron Tube Registration List

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 19 Volts / If 0.15 Ampere / Indirect / Series, AC/DC /

19AQ5: collection JR
Jacob Roschy

19AQ5: Telefunken Taschenbuch 1971
Anonymous 15 Collector

19AQ5: Funkschau Röhrendokumente
Michael Schlör

Usage in Models 1= 1949?? ; 1= 1954 ; 3= 1955 ; 2= 1956?? ; 1= 1956 ; 1= 1958 ; 2= 1959 ; 2= 1960 ; 1= 1963 ; 1= 1966

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):15

Forum contributions about this tube
Threads: 1 | Posts: 2
Hits: 1819     Replies: 1
19AQ5 (19AQ5)
Joseph Koebel

Hello, I would like to update the 19AQ5 to include additional Similar Tubes which aren't back-linked. The page for 6AQ5 lists several variants (5, 9, 12AQ5) in addition to the 19AQ5 but these are not reflected on the page. Thank you.

Emilio Ciardiello

Dear Joseph,

the  6AQ5 is correctly linked to its several heater variants, considered as derivatives of the same prototype. Of course, even the heater variants are linked back to their forerunner and this can be useful to consult the many data sheets and curves available for the prototype. A cross-link among all the heater variants is of limited usefulness, since different heater variants are not interchangeable.

If you want know how many heater variants were built for the 6AQ5, simply launch a search for tubes 'Containing' the characters 'AQ5'.

Regards, Emilio

End of forum contributions about this tube

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