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ID = 20445
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:  HEPTODE 
Identical to 2032
Similar Tubes
Normally replaceable-slightly different:
  1680 ; 5915 ; 6687 ; E91H ; EH900S ; EH960
Other class quality (otherwise equal):
First Source (s)
1956 : Tube Lore (I)
Production stop 1975
Predecessor Tubes 1680  
Successor Tubes 5915   EH900S   EH960  

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Description Designed as logic switching tube: both control grids at 0 V = tube conducts, control grid #1 OR control grid #3 at negative voltage: tube blocked. _ [JR]
Pentagrid control (gate) tube, sim. to 1680 and tested the same, but w/ added mica getter shield and taller bulb. Intro. 1956; withdrawn (as late as!) 1975. Sold only to IBM. [Information by L. Sibley] 
Text in other languages (may differ)

eh900s_sock~~5.png 2032: Telefunken Taschenbuch 1971
Anonymous 15 Collector

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