Authentic Supplies for the Transistor Historian

and Kit Builder.


Available Only from the TransistorMuseum


All Transistors Tested

Before Shipment.



Historical Background


Although best known for introducing the first commercial silicon transistors (in 1954) and the first commercial integrated circuits (in 1959), Texas Instruments initially entered the semiconductor market with germanium transistors, especially those designed for use in commercial AM radios.  Throughout the 1950s, TI was a major supplier of these devices to many of the transistor radio manufacturers, such as Admiral, Bulova, Emerson, Heathkit, Magnavox, Motorola, Regency, Westinghouse, and Zenith.  TI initially entered this market in 1954, when the first all transistor radio, the Regency TR1, was jointly developed by TI and introduced in Dec 1954TI supplied a complete range of these transistors, suitable for all elements of radio circuitry.  For example, the 2N172 was intended for use in the converter circuitry of AM radios.    By the early 1960s, the type 2N172 was discontinued and replaced by the type 2N252; a 1961 TI price list shows the 2N252 available from distributors at $2.45 each.  Other TI germanium radio transistors included the 2N145, 2N146, 2N147, 2N148, 2N149, 2N150, 2N185, 2N238, 2N252, 2N253, 2N254, 2N291, 2N308, 2N309 and 2N310.   TI manufactured germanium transistors well into the 1960s. 


You can use these classic germanium devices to repair your favorite old-time transistor radio, or to build a circuit from that timeframe with a truly historic transistor. See the chart at right to determine the type of transistor best suited for your application.   







Your Texas Instruments Historic Germanium Radio Transistor Order Will be Supplied in the Storage/Display Envelope Shown Above, which Includes an Insert with Historical Description and Schematics.




Texas Instruments Historic Germanium Radio Transistor

Vintage 1950s – 1960s

Use: Radio/Audio/Hobby



Your TransistorMuseum™

 Texas Instruments Historic Germanium Radio Transistor

 Order Will Contain:


One Transistor

 (Style Shown Above)

May Be Socket Length Leads

Tested and Guaranteed Functional


Hobbyist Insert Depicting the Historical Importance of this Classic Transistor, Includes Two Schematics Using these Historic RadioTransistors


A TransistorMuseum™ Classic

Semiconductor Storage

 and Display Envelope


Note: Current Type Numbers Available are 2N172 (Converter) and 2N185 (Audio). Limited Quantities On-Hand for Other Types in this Series. 





$10 per Package (One Transistor)

Includes Shipping Within U.S.


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To Determine Payments Options

(Paypal or Check)




By Jack Ward

All Rights Reserved.