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Description / Abstract:
This standard establishes qualification and conformance
requirements for electrical insulating compounds (conformal
coatings). It has been designed and constructed with the intent of
obtaining maximum confidence in the materials with minimum test
redundancy. This standard covers:
- The qualification and qualification retention of the conformal
coating material (Table 3-1, Column A and B).
- The quality conformance of conformal coating material
properties (Table 3-1, Column C).
For the purpose of this standard, the term conformal coating is
used herein when referring to a type of protective coating for use
on printed wiring assemblies. The conformal coating is intended to
provide protection from moisture and contamination and provide
electrical insulation; not as a sole source of mechanical
support.
For the purpose of this standard, inspections are performed on
standardized test vehicles instead of real production assemblies. A
standardized test vehicle refers to the test vehicle specified per
test method indicated, coated with the conformal coating under
inspection.
Purpose With standardized testing on
standardized test vehicles under test conditions specified in test
methods listed herein, this standard enables a manufacturer to
qualify his conformal coating product and express the qualification
it possesses. This standard also enables the manufacturer to attest
the conformance of the quality of production to the qualification
of each product.