Transistor Museum Oral History Jack Haenichen Motorola 2N2222 Page 19

A Transistor Museum Interview with Jack Haenichen

The Development of the 2N2222 – The Most Successful and Widely Used Transistor Ever Developed.

USE THE LINKS AND REFERENCES SHOWN BELOW TO EXPLORE THE WORLD OF THE LEGENDARY 2N2222

References to the History and Importance of the 2N2222

4. The 2N2222 has been used in numerous space flight applications over the past 40 years – this is a real testament to the reliability and overall performance levels of this durable device. Shown below are a few of the many references to the use of the 2N2222 in space flight applications.

References:

A) 1971 NASA Analysis of Radiation Susceptibility for Deep-Space Missions

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720004337_1972004337.pdf

B) 1965 NASA Evaluation of Transistors and Diodes for Micropower Applications

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650004857_1965004857.pdf

C) 1964 Marshall Space Flight Center Study on Components Irradiation

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650007925_1965007925.pdf

D) 2005 International Space Station Hardware Study

http://gltrs.grc.nasa.gov/reports/2005/TM-2005-213840.pdf

E) 2001 Mars Global surveyor Spectrometer (Geophysical Research)

http://www.mars.asu.edu/christensen/docs/christensen_tesreview_2001.pdf

Since its introduction over 40 years ago at the 1962 IRE convention, the 2N2222 has been used in countless applications, ranging from high reliability use in space flight and medical applications to widespread use in amateur radio and general purpose circuit applications. There is no other transistor type which has demonstrated this continued level of commercial success for so many years - the 2N2222 continues to be the most widely used transistor ever developed and has found a unique place in the history of transistor technology.

~~______________~~

PAGE 19