The printed circuit board (PCB) assembly process can result in residues from the solder and the flux, and these can cause current leakage without proper control and monitoring. In some cases, even a no-clean flux may need to be cleaned to prevent issues. You can save time and effort by using a specially formulated PCB cleaning solution, a solvent that will make the clean-up process easier and fuss-free. Here are some things to consider when choosing the right cleaning agent for your applications:
• High-quality cleaning solvents are designed for electronic assembly manufacturing applications, such as PCB and stencil cleaning. However, you can also find a non-solvent-based PCB cleaner that is semi-aqueous or aqueous.
• If you choose a solvent-based cleaner, be sure to look into its formulation. A good PCB board cleaner is made of organic solvents for non-aqueous applications. It effectively removes most kinds of uncured SMT adhesives and raw solder paste residues, and it is effective on organic contaminants and residues of post-soldering flux.
• Make sure that the PCB cleaning solution evaporates well and leaves no distinctive or strong odors. Likewise, consider a cleaning solvent that will not require you to rinse it off. That way, you can save time and move on to the next stage of your manufacturing process.
• Look for a PCB cleaner that is non-corrosive, so it will be compatible with most PWA and stencil materials. Moreover, consider a formulation that can minimize the build-up of solids, so you can reduce the need for equipment maintenance.
• Go for a PCB board cleaner that is non-flammable and non-hazardous. A good cleaner does not contain any glycol ethers or amines to keep your workers safe, and no VOCs, so you do not have to apply for relevant permits.
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