That may not be covered under any standard, because the requirements for CC coverage vary by component, assembly, program, customer, and usage requirements.
Usually, coating over the component body has no value added, as most component bodies are impervious to moisture. The primary purpose of the CC is to prevent moisture buildup on the metal terminations and solder connections on the CCA.
The coating requirements need to be defined and agreed upon between the user and the supplier (AABUS) and documented on the CCA drawing. They are unique and specific to the product.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Thursday, June 25, 2009 10:51 AM
To: [log in to unmask]
Subject: [TN] Conformal coating coverage
Dear Technos,
Since the PCB edges have been already discussed, I would like to get your input on tall components coverage. Do tall parts, like radial TH parts, inductors, electrolytic caps, etc. need to have the vertical sides coated? What about the coils with apparent windings?
IPC-610 is not detailed at all at this level and I have quickly browsed IPC-HDBK-830 without being able to find anything. What would be the IPC or MIL standard covering this particular issue?
Thank you,
Ioan Tempea, ing.
Ingénieur Principal Fabrication / Sr. Manufacturing Engineer
30 ans déjà! - Already 30 years!
950 rue Bergar, Laval, Québec, H7L 5A1
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