Why is there white residue when I clean my PCB?
White residue is generally a symptom of ineffective PCB cleaning. Common conductive flux residues from the soldering process can include various unreacted activators, binders, rheology components, and saponifiers. Among these are numerous iterations...
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Do you need to clean flux?
Yes, flux should be cleaned off of a printed circuit board (PCB) after soldering is completed. The following are the reasons to remove flux residues: Improve Aesthetic Appearance of PCB - If you are a contract manufacturer of PCB’s,...
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How do you clean excess flux?
The most common way to clean flux residues from a repair area is to saturate a cotton or foam swab with isopropyl alcohol or another cleaning solvent, and rub it around the repair area. While this may be adequate for no-clean flux, where the...
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How do you use flux remover?
The most common way to clean flux residues from a repair area is to saturate a cotton or foam swab with isopropyl alcohol or another cleaning solvent, and rub it around the repair area. While this may be adequate for no-clean flux, where the...
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What removes solder flux?
Flux removers (defluxers) are used to clean off flux and other contaminants left by manufacture, rework, or repair of printed circuit boards. Flux removers can be solvent based (e.g. isopropyl alcohol) or water-based, which are generally used...
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How to Safely Disinfect Your Mobile Devices
The Coronavirus/COVID-19 pandemic has drawn attention to cleaning and disinfecting personal mobile devices. That intuitively makes sense, because we are constantly handling our phones and then pressing them against our face, close to our mouth...
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Chemtronics Response to COVID-19
ITW Contamination Control – Electronics, the manufacturing facility for Chemtronics and Techspray products, is considered an essential critical business as classified by the Department of Homeland Security. We are able to remain open and...
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Can you spray contact cleaner on a circuit board?
Most contact cleaners are safe to use on printed circuit boards (PCBs) in electronic devices. Make sure the contact cleaner solvent is compatible with all components, connectors, and packaging by testing on a scrap part or inconspicuous area.
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How do you clean dirty electrical contacts?
Hold object to be cleaned in vertical position so the solvent and soil can run off. Spray 4 - 6 inches (10-15 cm) from surface. Wash from top to bottom, allowing the liquid to flush away contaminants. For precision application, use with extension...
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How do you clean corroded contacts?
To improve the connection quality of an electrical contact or switch, you can remove oxidation or rust either mechanically and/or chemically. A brass or steel brush is the most common method of scrubbing off oxidation, although for sensitive...
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