Enthone Inc., a business of Cookson Electronics, has introduced AlphaSTAR immersion silver. The process selectively deposits a silver coating that easily meets or exceeds users’ requirements. The process is reportedly the industry‘s next generation immersion silver, and builds on the AlphaLEVEL, the first patented immersion-silver finish. AlphaSTAR maintains high first-pass yields (no exposed copper). Typically, large copper features are most challenging to coat with silver. However, competitive processes may have as much as 30% exposed copper which has to be reworked. Reworking is costly, time consuming and could damage delicate fine-line traces. AlphaSTAR virtually eliminates rework. The complete process includes a special cleaner, microetch, predip and plating steps.
EPP EUROPE 427
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