摘要 |
<p>A protective coating encapsulates bond pads disposed on a substrate of an optical communications module and extends in between the bond pads. The protective coating has characteristics that (1) increase the dielectric resistances between adjacent bond pads on the substrate, (2) protect the bond pads from moisture in the environment, and (3) prevents, or at least reduces, ion migration between adjacent bond pads. In this way, the protective coating prevents, or at least reduces, corrosion growth that can lead to impedance degradation and electrical shorts between adjacent bond pads.</p> |