HISTORY OF ELECTRONIC PACKAGING AT APL History of Electronic Packaging at APL: From the VT Fuze to the NEAR Spacecraft
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چکیده
JOHNS HOPKINS APL T E lectronic packaging has played a major role in the success of systems developed by the Applied Physics Laboratory. This article briefly chronicles some selected and often unique examples of APL’s electronic packages over its 56-year history. The early APL electronic packages were needed for the famous VT fuze of World War II; in that case, four vacuum tubes and the ancillary electronics in the nose of an artillery shell had to be packaged. This presented a challenge: to develop miniaturized parts and techniques capable of withstanding the gun launch in a broad range of military environments and to ensure the highest degree of reliability. Further improved packaging techniques were employed as APL engineers designed devices for highaltitude research instruments, guided missiles, satellite and spacecraft instruments, underwater instruments, shipboard communications and radar systems, and biomedical devices. Technology changes progressing from vacuum tubes, transistor circuits, and simple integrated circuits to modern, very large scale integrated circuits that influenced APL’s electronic packages are described. (
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