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请教DSP6416 ,6455 焊接温度问题



 

  DSP6416T,6455是有铅的,尽管所谓ROHS豁免, 那么它们的焊接温度曲线分别要求是多少,锡球含不含铅?用无铅焊接工艺来焊接行不行?有什么影响?