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oops, I just reverted your change and then noticed this discussion. The vast majority of headers are based on 1/10-inch pitch. The vast majority of IC's with separate legs are also based on 1/10-inch or 1/20-inch. A very few use 0.2 mm (some ZigBee connectors). However, as you said, some SMDs (eg BGA but not quad packs) are based on 0.5 or 0.4 mm. Even in BGA packs, some use metric and some use 1/20-inch. Stepho talk02:16, 6 November 2025 (UTC)[reply]
level-5 vital article is rated B-class on Wikipedia's content assessment scale.
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