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1P21

Information - Help 
ID = 26085
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Photomultiplier 
Identical to 1P21
Similar Tubes
Normally replaceable-slightly different:
  CV2696
First Source (s)
15.Nov.1949 : -- Original-techn. papers.

Base 11-Pin-USA-old
Was used by Technology / Measurement
Filament
Description

Nine-stage, side-on type having S-4 response. Wavelength of maximum spectral response is 4000 +/- 500 angstroms. This type makes use of cesium-antimony dynodes and a cesium-antimony, opaque photocathode. Window material is Corning No. 0080 lime glass or equivalent. Tube has a non-hygroscopic base. Supply voltage DC/peak AC between anode and cathode 1250 volts.

 
Dimensions (WHD)
incl. pins / tip
30 x 85 x 30 mm / 1.18 x 3.35 x 1.18 inch
Weight 50 g / 1.76 oz
Information source - - Manufacturers Literature   RCA Phototubes and Photocells PT-60
 
e_1p21.jpg
1P21: PROPIA
Pedro Prieto-Castro

 
1p21_sock.png
1P21: elektron taschenbuch 1952
Heinz Höger

 
1p21_courbe.png
1P21: RCA
Patrice Zeissloff



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