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5B/256M

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ID = 29768
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Beam Power Tube   beam power 
Identical to 5B/256M = CV499

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 19 Volts / If 0.3 Ampere / Indirect / Specified voltage AC/DC
Description This is one of a range of reliable beam power tubes from STC. The 5B/254G, 5B/254M (CV428), 5B/255M (CV391), 5B/256M (CV499), 5B/257M (CV2220), 5B/258M (CV2347), were developed from the 5B/250A (807)with similar characteristics to the 807. The range comprises single and double-ended and wire terminated versions and were widely used in military and civilian equipments for both audio and radio frequency applications up to 125 MHz.
Total anode and screen dissipation <25W.
Power outputs from a pair at 60 MHz class C can achieve 40W with anode voltages of 600. At audio frequencies a pair in class AB2 can achieve 80W rms. 
Information source -- Original-techn. papers.   

5b254m_5.png 5B/256M: Datenblatt
Wolfgang Bauer


Just Qvigstad

Documents about this component
  STC Data Sheets 563 KB
 

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