Do the ACS712 and ACS713 contain lead?
The leadframes of the ACS712 and ACS713 are plated with lead-free, 100% matte tin and hence should be processed and soldered accordingly. However the ACS712 and ACS713 are flip-chip devices, and the solder balls inside the package that connect the die to the leadframe are 95% lead, 5% tin. Lead-free alternatives for high-temperature flip-chip solder balls are not yet commercially available, and therefore solder balls of this composition are exempted from lead-free requirements of RoHS (Directive 2002/95/EC of the European Parliament and of the Council of 27 January 2003 on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment).
