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kay_zhang:我是覺得一個LED 會有這個必要嗎, PAD 很小嗎 (2018-04-11 10:24)
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xtxt:SMD 焊盘强度好 但PAD大,绿油在PAD上面 预计是10UM左右高度 加上白油线高度15UM 0.1MM厚度的钢网印出来的锡厚相当0.12M的钢网,另印锡还有拉尖现象不算在内,很容易连锡。NSMD 如果担心强度可以做OSP工艺,优点是PAD小,有阻焊桥,阻焊桥就好比水沟,水只 .. (2018-04-11 12:55)