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simon_sun:一般来说就算引脚挂锡了,回流焊时锡也会往上爬的,你看下PCB设计时这几个孔有没有做隔热处理,或者尝试一下调整炉温曲线回流时间和最高温试试 (2021-08-09 10:21)
fanjinbo:BOT面钢网开孔 让焊盘上锡 (2021-08-09 08:52)
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墙角的蜗牛:炉温试过很多次,效果也不理想 (2021-08-09 15:25)
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wuweichina:1.AB都印锡膏一次过炉,不避孔,尽量将孔大,阶梯更好。2.采单面印锡可以考虑预置锡片增加锡量。 (2021-08-09 08:36)
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