TRANSISTOR MUSEUM™   

Historic Transistor Photo Gallery   

 

Transistor Size (7/8” OD X 3/8”)

Date Code 5-39 (1955 Week 39) on Back

 

1960s GE Hobbyist Packaging for 2N107

BubblePack Contains Transistor and Schematics

2N107 Transistor, Page 2  

 

GE 2N107

 

TYPE

Germanium PNP Alloy Junction

Audio Frequency Amplifier

 

USAGE

Hobbyist/Experimenter 

 

DATE INTRODUCED

1955

 

CASE STYLES

Black Metal Pinched Top (Early)

Black Metal Top Hat (Later)

 

AVAILABILITY

Common (High Volume Production)

 

HISTORIC NOTES

General Electric introduced the 2N107 in August 1955.  According to the press release which announced the 2N107, “ A new transistor, designed to meet the demands of radio amateurs, hobbyists and experimenters for a stable, inexpensive transistor has been placed on the market by the General Electric Co…… the suggested distributor price of well below $2 for the new 2N107 transistor makes it the least expensive of any transistor currently available.”  This transistor became a favorite with hobbyists and experimenters, and many articles appeared in the electronics magazines of the time with projects using the 2N107.  The earliest units had the distinctive GE “pinched top” metal case style, while later units were made with the black metal “tophat” style.  Like many other hobbyist transistors, the 2N107 was originally developed in an effort to find a sales outlet for the large number of marginally performing “rejects” which were common in the early days of germanium transistor production. 

 

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