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ID = 40014
United States of America (USA)
Brand: Burroughs Corporation; Plainfield (NJ)
Tube type:  Beam Switching Tube - incl. "Trochotron" 
Identical to BX4001 = 6714
Similar Tubes
Different maximum ratings:

Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect
Description 'Beam-X Switch' family from Burroughs. To reduce the size of the previous beam switch tubes, Burroughs moved the magnetic source inside the electrode structure; 10 small magnets were mounted into the tube, one for each counting position. The Beam-X family had no pin available for zero reset feature.
Glass envelope with 26 pin base, external magnetic shield. BX4001 is a standard speed version of the BX4000; 2MHz counting speed, 30V target voltage, 1mA target current.
Operating principle of trochotron. 
BX4001: Manufacturer's Literature
Emilio Ciardiello

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Documents about this component
  Datasheet of BX4001 -6714 Beam-X counter. Courtesy of Lud Sibley. 592 KB

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