A SURVEY OF EARLY POWER TRANSISTORS

by Joe A. Knight

TRANSITRON 1950s/60s GERMANIUM AND SILICON

POWER TRANSISTORS   

 

 

 

Transitron, like most of their semiconductor competitors, realized that even more power was needed from their output devices.  So it is that by late 1953 or early 1954 they continued with prototype Power Transistor development along the following lines.

 

ABOVE, L-to-R:    In 1954 no industry standard output device designs had been developed.  Transitron had come up with this above style using a plug-in copper housing design, with three large connecting pins, that's about the diameter of a penny.  It was also stud mounted for extra heat sink dissipation.  No doubt a special three pin socket would be necessary for this to work properly and it's inherent limitations and extra costs may have brought about the next design series with more circuit flexibility.

 

 

 

 Go To Transitron Early Power Transistors, Page 4

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Joe A. Knight Early Power Transistor History – TRANSITRON  Page 3