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www.us-tech.com Purity Over Parity:
Electrolytic Solder Outperforms the Competition
By David Bao, Ph.D., Head Chemist and Director of New Product Development, Metallic Resources, Inc.
of solder. In order from highest to poorest grade, they are elec- trolytic, followed by virgin, and then reclaim. As the original innovator and leader in elec- trolytic solder, the solder manu- factured and sold by Metallic Resources is ten times more pure than traditional standards. Beginning at the bottom,
T
reclaim solder is the poorest since the reclaimer simply takes contaminated pot metal, smelts the dross out of it, recasts it, and sells it. When sold, the reclaim solder still contains all previous contaminants. Metallic Resour - ces does not sell reclaim solder. Through the use of state-of-the- art refining technology, Metallic Resources converts a combina- tion of impure virgin-grade sol- der, solder dross, solder paste, contaminated pot metal, and
he discerning electronics manufacturer must know that there are three grades
other materials into the highest grade of tin, lead, and lead-free solder.
Although the name suggests otherwise, virgin-grade solder is
not free of contaminants, nor is it entirely pure. Virgin-grade sol- der manufacturers simply take virgin-grade tin, lead and other elements, then mix them togeth-
er into the desired alloy — with both known and unknown amounts of metallic and non- metallic contaminants. Although many solder manufacturers may claim to meet the IPC J-STD-006 for electronic solder alloys, that standard is wide in latitude. In short, virgin-grade solder is any- thing but pure.
Unmatched Purity So why does electrolytic sol-
Metallic Resources’ products, including solder balls, bars and wire.
THERMAL FATIGUE RESISTANCE
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der outperform reclaim and vir- gin-grade solder? Because the purity level is simply un - matched. To get there, Metal lic Resources utilizes proprietary electrolytic-refining techniques. We start by melting and mixing impure virgin-grade solder, sol- der dross, solder paste, contami- nated pot metal, and other mate- rials together into an impure and contaminated anode. The tin/lead or tin anode is
Continued on next page
July, 2022
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