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Formation of Intermetallic Crystals in Lead-free Wave Soldering

The formation of intermetallics in solder during soldering is a normal process. The fact that these intermetallics are seldom found in tin-lead solder is due to the low rate at which these crystals are formed when tin-lead solders are used. In lead-free solders these crystals grow much faster and as a result they can often be found in the solderpot.

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