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ID = 36175
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Electrometer Tetrode or Pentode   Text 
Identical to FP54 = GL-5740
Similar Tubes
Other characteristic (electr. data):

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Technology / Measurement
Filament Vf 2.5 Volts / If 0.09 Ampere / Direct / Battery =

Space-charge grid electrometer tube. Sensitivities as high as 10 exp(-19) amperes can be achieved (about sixty electrons per minute).

Typical operation

  • 6 V anode voltage
  • 60 uA anode current
  • 4 V space grid voltage
  • -4 V control grid voltage
  • 10exp-15 A grid current
  • 0.9 amplification factor

Registered to General Electric as 5740 in July 1948. First listed in the GE Vacuum Tube Designation listing (1930) as an Electrometer Pliotron.

Information source - - Manufacturers Literature   GE Vacuum Tube Designations 12/10/1930
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