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描述:红色标示处,上锡不饱满
图片:2014-01-25_192259.gif
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panda-liu:有贴片最好开CHIP波...这样的好处一是减少器件急剧温升引起开裂失效、其次有助于去除多余焊剂减少平波过多气泡的阴影效应...,你那板面有许多漠光斑点不好、成膜应该成片没有间断...,至于焊点不饱满与前面说的有关...焊点轮廓与PCB内夹角在30度至45度就可以了...,呵呵。 (2014-01-25 21:58)
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