CK501X (CK501X) Subminiature tube
        ID: 148988
       
      
        This article refers to the component: To the tube/semiconductor
       
       
      CK501X (CK501X) Subminiature tube
          13.Sep.07 13:48
         
         
           2317
          
         
         Developed in 1939 it was immediately used in numerous Hearing Aids. 
           Ruggedized varieties came into use for proximity fuses (AAA). 
           In 1945 subminiature tubes found application in the first vest pocket superhet Belmont Boulevard 5P113.
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