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图片: Dingtalk_20230504094909.jpg
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雨中听雨:QFN做成圆形的焊点很少见。先检查下印刷锡膏成型。另外还要看下接地的开口率以及焊接空洞状况。要先确保印刷良好及贴件贴板OK。最好上些X-ray图片。 (2023-04-24 15:34)
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