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Is there a standard lead-free solder alloy?

April 26, 2017Alloy Lead-Free solder standard

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Is there a standard lead-free solder alloy?

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Just as with the lead-based solder alloys, there are several alloys that seem to be the most commonly used. The Solder Products Value Council (SPVC), a group of global solder manufacturers, standardized on SnAg3.0Cu0.5 as the alloy of choice. There are many variations of SnAgCu from 3-4% silver and 0.5-0.7% copper, but the melting temperature only varies in the range 217-220°C.