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Lead-free wave soldering (Sn-Ag-Cu) management

文章出處: 發(fā)布時(shí)間: 2011年5月22日 人氣 6073

recommended in Japan is SnAg3.0Cu0.5 alloy (referred to as SAC305 ), while in Europe recommended is SnAg3.8Cu0.7 alloy. Sn-Ag-Cu Lead-free solder has the advantage of good solderability, wetting strength, wetting speed and high temperature stability are better. Solder joints of high mechanical strength, melting point 21 7 ℃ -22 1 ℃. The The biggest drawback is silver with precious metal (Ag). Therefore, the relatively high cost of solder, because of the need to select based on actual production.