Datasheet

Page 2
Description Packaging Order Code Shelf Life
AFA Conformal Coating 200 ml Aerosol AFA200 24 Months
5 Litre AFA05L 24 Months
Fast Dry Thinners 5 Litre FTH05L 24 Months
Removal Solvent 200 ml Aerosol ULS200D 36 Months
400 ml Aerosol ULS400D 36 Months
1 Litre Bulk ULS01L 72 Months
5 Litre Bulk ULS05L 72 Months
25 Litre Bulk ULS25L 72 Months
AFA Gel 35ml syringe AFAG35SL 24 Months
Directions for Use
AFA can be sprayed, dipped or brushed. The thickness of the coating depends on the method of application
(typically 25-75 microns). Temperatures of less than 16°C or relative humidity in excess of 75% are unsuitable
for its application. As is the case for all solvent based conformal coatings, adequate extraction should be used
(refer to MSDS for further information).
Substrates should be thoroughly cleaned before coating. This is required to ensure that satisfactory adhesion to
the substrate is achieved and to prevent flux residues causing corrosion on the PCB. Electrolube manufacture a
range of cleaning products using both hydrocarbon solvent and aqueous technology, which all produce results
within Military specification.
Spraying – Bulk
AFA needs to be diluted with the appropriate thinner (FTH) before spraying. The optimum viscosity to give
coating quality and thickness depends on the spray equipment and conditions, but normally a dilution ratio of
1.5:1 or 2:1 (AFA:FTH) is required. Suitable spray viscosity is typically 40-70 cPs. If bulk coating material has
been agitated, allow to stand until air bubbles have dispersed before use.
AFA is suitable both for use in manual spray guns and selective coating equipment. The selected nozzle should
enable a suitable even spray to be applied in addition to suiting the prevailing viscosity. The normal spray gun
pressure required is 275 to 413 kPa (40 – 60 lbs/sq.inch). After spraying, the boards should be placed in an air-
circulating drying cabinet and left to dry.