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ID = 29616
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Electrometer Tetrode or Pentode 
Identical to CK5889 = CK-5889 = 5889

Base Wires only.
Filament Vf 1.25 Volts / If 0.0075 Ampere / Direct / Battery =
Description Subminiature electrometer pentode, having the control grid on the top of the T3 bulb. Flying leads, 5 pin flat press (pin 4 suppressed). 3 fA max. grid current. 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 144
- - Manufacturers Literature   Raytheon, Dec. 27, 1954

ck5889_sockel.png CK5889: Raytheon Manual
Heinz Höger

CK5889: Manufacturer's Literature
Emilio Ciardiello

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