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腾讯网
29 天
拆解华为手环,第一次见到传说中的WLCSP封装的STM32
BQ25120的简化原理图如上。 这个器件的焊盘间距也是0.4mm,和前面说的STM32焊盘间距相同。 板子边缘,焊接电池线负极的位置有一个导流铜条。
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