by Joe A. Knight




Any understanding of Texas Instruments' (herein after referred to as TI) role in the development of Power Transistor is best viewed from their very beginnings.  Their innovative and groundbreaking approach to any challenge is still instilled within the company today as a world-wide leader in digital electronics.  While wanting to jump into the semiconductor business in 1951 TI started with no research lab or any semiconductor experience.  After purchasing the BTL patent license and attending the Western Electric symposium in 1952 on how to actually fabricate transistors, TI first entered the transistor market by early 1953 with their cartridge type "100" and "101" point-contact devices, this in less than 12 months after starting from scratch.  The rest of the world should have taken notice of this feat even then. 

Go To TI Early Power Transistors, Page 2



Shown at left is the March 1953 ad, published in Electronics magazine, announcing the introduction by TI of type 100 and 101 point contact transistors.  These devices marked the entry of TI into the transistor manufacturing business.  Shown above is close-up comparison of the TI 100/101 device type (shown at right) with a Western Electric type 1761.  The “cartridge” case style used for these early transistors was initially developed by Bell Labs and was the accepted “standard”.  The TI series appears to be “plug-compatible” with the Bell Labs/Western Electric series.  See the Mac McBride Oral History for a detailed discussion of these early TI transistors. 


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Joe A. Knight Early Power Transistor History – TEXAS INSTRUMENTS