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Considerations of New Classes of Coatings for IPC-CC-830 Revision C
Abstract
For many years, conformal coatings used for high performance applications have been qualified to either the military standard for conformal coatings, MIL-I-46058, or the commercial equivalent, IPC-CC-830, which was almost identical to the military specification. Unfortunately, the military specification was declared “inactive for new designs” in 1995. While the Qualified Products List (QPL) has been maintained for this specification, the document itself has not been updated for technology since the 1990s. IPC-CC-830 was written to be the same (essentially) as MIL-I-46058, such that conformal coating vendors could do one set of testing that would meet the test requirements of both specifications. At the writing of this document, IPC-CC-830 is at Revision B, Amendment 1, and maintains the established relation to MIL-I-46058.
Conformal coatings, like many high-performance materials, have evolved considerably since the 1990s. New coatings, such as fluoropolymers or hybrid coatings, have come on the market, many of which offer superior protection characteristics, but do not fit into the existing classifications of either MIL-I-46058 or IPC-CC-830, making their acceptance into the high-performance community problematical.
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