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ID = 27640
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Beam Power Tube   beam power   Power/Output 
Identical to 11E3 = CV73 = V1120B = 5B/103B
Similar Tubes
Heater different:

Base British-7-Pin, old (M7A) Top contact with a cap.
Filament Vf 4.2 Volts / If 2.5 Ampere / Indirect / Parallel, (AC/DC)
Description Pulse operation. Pa <10W, Va <12.5 kV peak,
gm 7.5mA/V at Va=Vg2=200, Ia=40mA 
Dimensions (WHD)
incl. pins / tip
54 x 140 x mm / 2.13 x 5.51 x inch
Weight 71 g / 2.50 oz
Information source - - Manufacturers Literature   
11E3: Eigene Sammlung
Giovanni Cucuzzella

11E3: ratheiser
Michael Schlör

11E3: Original data sheet
Otto Galli

from Just Qvigstad

Usage in Models 1= 1951

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Documents about this component
  Manufacturer's Data Sheets 326 KB

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