PCB Repair & Prototyping
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Chemtronics® is the leading manufacturer of electronic circuit board and PCB repair products. Top-selling brands include CircuitWorks® benchtop repair and PCB prototyping tools, Soder-Wick® desoldering braid, and Chem-Wik® desoldering braid. These products are engineered to make your circuit board and PCB repair process more efficient and effective.
Chemtronics offers two of the top brands of desoldering braid in the industry to meet your every requirement. Soder-Wick®, the world's leading brand of desoldering braid, is the fastest, cleanest and safest braid in the industry. It significantly reduces rework/repair time and minimizes the risk of heat damage to the board. Its geometrically precise weave design allows for maximum capillary action and solder capacity. Soder-Wick® and Chem-Wik® Desoldering Braid optimize heat transfer through the braid and into the solder joint, resulting in faster wicking action than any other competitive brand. Minimal flux residue on the board speeds up the cleaning process, or eliminates it entirely.
CircuitWorks® PCB Repair and Prototype Tools
Comprehensive line of conveniently packaged and precision dispensing rework and PCB repair products makes circuit board and PCB repair and prototyping faster, easier and more accurate. Advanced-formula materials packaged in unique delivery systems ensure superior performance and pinpoint accuracy. The full range of products meets all of the technicians needs for electronics rework and prototyping — repairing, cleaning, protecting, lubricating, bonding, and restoring electrical conductivity to circuit boards and components.
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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 of acids (abietic, adipic, succinic among others), highly basic ingredients (amino compounds), and even constituents found in “soaps” such as phosphate and sulfate ions. When a cleaner does not fully dissolve all the constituents, or the cleaner is not allowed to flow off the PCB, the remaining solvent can evaporate off and leave behind residue that is either white or like water spots.
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.
How Do You Remove Conformal Coating?
You may be required to remove a conformal coating from the PCB to replace damaged components or other types of rework. The basic methods as cited by IPC are: Solvent Removal – While most conformal coatings can be dissolved in solvent, you should make sure the solvent won’t damage parts or components. Acrylic is the fastest and easiest coating to remove with solvent. Silicone and urethane coatings will take more soak-time and will probably require brushing to fully remove the coating. Chemtronics offer Electro-Wash Two Step [https://www.chemtronics.com/electro-wash-two-step], which when heated, quickly removes acrylic, silicone and urethane coatings. CircuitWorks Conformal Coating Remover Pen [https://www.chemtronics.com/circuitworks-conformal-coating-remover-pen] is available to dissolve small areas of coating. Peeling – Some conformal coatings can be peeled from the circuit board. This is mainly a characteristic of some silicone conformal coatings and some flexible conformal coatings. Thermal/Burn‐through – A common technique of coating removal is to simply burn through the coating with a soldering iron as the board is reworked. This method works well with most forms of conformal coatings. Microblasting – Micro blasting removes the conformal coating by using a concentrated mix of soft abrasive and compressed air to abrade the coating. The process can be used to remove small areas of the conformal coating. It is most commonly used when removing Parylene and epoxy coatings. Grinding/Scraping – In this method, the conformal coating is removed by abrading the circuit board. This method is more effective with harder conformal coatings, such as parylene, epoxy and polyurethane. This method is only used as a method of last resort, as serious damage can be incurred.