Coating Replacement, Solder Mask

Coating Replacement, Solder Mask


 

1.	Clean the area. Caution Surfaces to be coated must be thoroughly cleaned prior to coating to ensure adequate adhesion, minimized corrosion, and optimized electrical properties.
2.	If needed, apply Kapton tape to outline the area where the soldermask will be applied.
3.	Mix the epoxy or replacement coating. If desired, add color agent to the mixed epoxy to match the circuit board color.
4.	Apply the replacement coating to the board surface as required. A brush or foam swab may be used to apply and spread the epoxy or replacement coating. (See Figure 1).
5.	Cure the epoxy per Procedure 2.7 Epoxy Mixing and Handling. Caution Some components may be sensitive to high temperature.
Evaluation
1.	Visual examination for texture, color match, adhesion and coverage.
2.	Electrical tests to conductors around the repaired area as applicable.