Cleaning circuit boards prior to conformal coating can help prevent contamination and improve the coating process. It also ensures the long-term reliability of the board.
Various types of contaminants are eliminated when the boards are cleaned. These include manufacturing and assembly residues.
Circuit boards can be cleaned successfully using the following methods:
- Aqueous chemistries
- Solvent or chemical cleaning
- Plasma cleaning
The key is to match the circuit board with the cleaning process and the materials.
To ensure that your boards are cleaned properly, use any of the following testing methods:
- Ionic Contamination Testing (ROSE)
- Ion Chromatography (IC) or High Performance Ion Chromatography (HPLC)
- Surface Insulation Resistance (SIR) testing
Read more at Conformal Coating Processing: Cleaning
Who is Nexus?
Nexus brings together the accumulated knowledge of a group of conformal coating and electronics material dispensing consultants who provide a unique service, focused on helping electronics manufacturing clients improve their conformal coating and electronics materials processes.
Nexus operate across North America, Europe and Asia and can provide a unique perspective to the rapidly growing conformal coating and electronics materials industry. Expertise is held in liquid and parylene coating, capital equipment sales and specifications and material, equipment and process specification, troubleshooting and training.