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1P39

Information - Help 
ID = 27517
       
 
   
Tube type:  Photocell   Detector 
Identical to 1P39 = IP39 = CE29
Similar Tubes
Normally replaceable-slightly different:
  929 ; GL929
First Source (s)
15.Aug.1947 : -- Original-techn. papers.

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Technology / Measurement
Filament
Description

Blue-sensitive (up to 4000 Angstroms). Side-on type having S-4 response. This type has a maximum anode dark current at 25°C of 0.005 microampere at 250 volts. It makes use of a non-hygroscopic base for increased resistance between anode and photocathode pins under adverse conditions of high humidity.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
30 x 78 x mm / 1.18 x 3.07 x inch
Information source - - Manufacturers Literature   RCA Phototubes and Photocells PT-60
 
1p39_celetron.jpg
1P39: My tubes
Anonymous 413 Collector

 
1p39_sock.png
1P39: elektron taschenbuch 1952
Heinz Höger

 
1p39.png
1P39: Manufacturer's Literature
Emilio Ciardiello


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