Conformal Coating

Conformal Coating is a specially formulated coating that is applied to a printed circuit board to form a protective film, which enhances resistance to the moisture, dirt, dust and chemical pollution that electronic products face. It can also prevent corrosion caused by contact between solder joints, conductors and air, and eliminate electromagnetic interference to achieve insulation.

Industries that generally require the use of conformal coating:

Aerospace and Military Applications
Automotive Application
Commercial Applications (Appliances)
Railroad and Traffic Control Applications
Industrial Applications
Value Added Applications

Feature Comparison

According to materials, it is mainly divided into four categories

Material	Acrylic	Silicone	Polyurethane	Epoxy
Features	Good abrasion resistance, easy to repair. Poor resistance to chemical solvents.	Flexible Good heat resistance Strong toughness Suitable for outdoor and high temperature environment. Low abrasion resistance. Easy to scratch and fall apart.	Excellent moisture, chemical and abrasion resistance. Difficult to remove, not easy to rework.	Good moisture, abrasion and chemical resistance. Very difficult to remove after curing and is not as elastic as other materials.
Recommendations	SL 1307 FLZ SL 1307 FLZ/234 SL 1309 N 419D	422B	SL 1301 ECO-FLZ SL 1400 ECO-FLZ 4223F	4224

Comparison Table

	Reparability	Moisture Protection	Abrasion Resistance	Solvent / Chemical Resistance	Mechanical Strength	Flexibility
ARACRYLIC	GOOD	GOOD	GOOD	POOR	FAIR	FAIR
URURETHANE	POOR	GOODMoisture sensitive when wet	GOOD	GOOD	GOOD	GOODThin build
SRSILICONE	FAIRContamination issue	FAIR	POOR	VERY GOOD	POOR	GOOD
EREPOXY	VERY DIFFICULT	GOOD	GOOD	GOOD	GOOD	POOR