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868

Information - Help 
ID = 18370
       
Country:
Worldwide
Brand: Common type Worldwide tube/semicond.
Tube type:  Photocell Gas filled 
Identical to 868 = WL-735 = NU1
Similar Tubes
Normally replaceable-slightly different:
  PJ-23
Predecessor Tubes 867  

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Technology / Measurement
Filament
Description

Side-on type having S-1 response. Wavelength of maximum spectral response is 8000 +/- 1000 angstroms. This type makes use of a semicylindrical photocathode, and has a direct interelectrode capacitance of 3 picofarads. Anode-Supply voltage is 90 volts.

 

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
29 x 98 x 29 mm / 1.14 x 3.86 x 1.14 inch
Weight 31 g / 1.09 oz
Tube prices 2 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   Babani: Radio Tube Encyclopedia
  rca_phototube_fig1.png
  868: RCA Phototubes 1941
David Erali
 
868rcaradiotron_2_klein.jpg
868
Geri Meier

 
868sockel_1.gif
868: KoBi
Konrad Birkner † 12.08.2014

 
868_data_p1.png
868: AWV Radiotron Valve Data Book
Stuart Irwin



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