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Transistor Packages

Closeup Views of Transistor Packages


The TO-1 package has been used on many germanium transistors:

   


The TO-5 package was also widely used for germanium transistors:

   


The "K" style is a TO-1 with a large heat sink added:

   


The TO-92 is a standard plastic package for silicon transistors. The leads can be straight, as shown here, or kinked to fit other lead spacings:

   


The TO-18 is a metal can package that is used in some older silicon devices:

   


A comparison of the various transistor packages:

 


This is just a selection of some of the most popular types. There are many others, even among just the small signal types. I will add some Ge glass packages when I have time to take the photos.



©2014 Jack Orman
All Rights Reserved

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