Surface Mount Device; electronic components designed to be mounted directly onto printed circuit boards.
Technical acronym from the 1960s electronics industry. 'Surface mount' describes the assembly method where components sit on top of the board rather than through holes. This technology enabled miniaturization of electronic devices by allowing denser component placement.
SMD technology revolutionized electronics by allowing components to shrink dramatically while increasing circuit density. Your smartphone contains thousands of these tiny components, some smaller than grains of salt, making modern portable technology possible.
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