Download this presentation that reviews the chemistry involved in the formation of “black epoxy” and how the silvery epoxy appearance can easily be restored, thereby allowing for a more aggressive clean prior to wirebond. Rework of wire no sticks or multiple wirebond attempts on the same pad is a major concern in the manufacture of large area Hybrids and RF MMIC microwave hybrids and a big contributor to expensive rework cycles. How to effectively clean up resin bleed and deal with the “black epoxy” is the subject of this white paper.
