PCB Repair Depot Reduces Costs With Better Cleaning Tools and Fluids
The Challenge Benchtop cleaning of PCBs is a tough challenge for process engineers. Dip-and-brush cleaning is an inexpensive but slow method that often leaves residues to migrate across circuits. Traditional high-pressure aerosols are convenient but can be expensive, environmentally wasteful and people don’t like breathing all those fumes. MicroCare offers a better way to clean circuit … Continued
Satellite TV Repair Depot Changes Cleaning; Cuts Costs and Improves Worker Safety
A large repair company in the eastern U.S. is dedicated to maintaining satellite TV set-top boxes on behalf of one of the big satellite operators. This company cleans and repairs about 80,000 set-top boxes monthly. After repairing each box, they would use a fresh lint-free wipe and a liquid spray cleaner on each box to remove … Continued
Chinese Company Switches to Better Stencil Cleaning, Saves Money
Automated stencil printing is the heart of modern SMT production. The typical SMT line runs at 90-95% yield because the stencil printer is an incredibly challenging process to manage. Industry experts estimate that there are over three dozen different stencil printing parameters or variables that must be controlled. The whole system is so complex — … Continued
The Meaning of Kb Value in PCB Cleaning
The cleaning strength of a PCB cleaner is frequently measured using an industry benchmark called the Kauri Butanol (Kb) value. A higher Kb value is usually better and means the cleaner is more aggressive. But there are trade-offs. For instance, stronger solvents can have compatibility problems with plastics, coatings, inks and other components. So, smart … Continued
Why You Should Clean a No Clean Flux
Many small-component PCBs (printed circuit boards) are assembled today with no-clean solder pastes. No-clean solders were formulated to speed up the manufacturing process by eliminating the need for cleaning circuit boards after reflow. The solder paste did not need to be removed and could stay in place without any detrimental effect to the function, performance … Continued
How Do PCB Cleaning Pens Work?
PCB cleaning pens are big time savers and incredibly convenient. For years, MicroCare has sold a very popular product called the TidyPen™. It’s very effective at removing sticky labels, tapes and adhesives from PCBs. Using that same pocket-sized pen format, MicroCare developed a line of PCB cleaning pens for pin-point cleaning water soluble, RMA and no … Continued
Use Toxicity Ratings to Help Ensure Worker Safety
There are several dimensions to worker safety around chemicals: toxicity, corrosivity and flammability to name a few. While the risk of fire and corrosiveness may be well-understood, David Ferguson, MicroCare product manager, feels that most end-users may not clearly understand toxicity and mistakes could be made that put workers at risk. One type of toxicity … Continued
Removing PCB Conformal Coatings
Conformal coatings are very important for PCBs that operate in a harsh environment. They are used on electronics that are near the ocean, in harsh weather, in dusty cities and dirty factories. For example, the PCBs that control gas station pumps and traffic lights are almost always coated to help them endure their harsh environment. … Continued
What’s the Best Way to Dry a PCB on the Benchtop?
There are four steps to successfully cleaning PCBs (printed circuit boards). Wet, scrub, rinse and dry. The wet, scrub and rinse operations are obvious. Wet the board with a pure cleaning fluid. Scrub it using a good quality scrubbing brush. Then rinse it off with more clean fluid. However, the dry step is often overlooked … Continued
How Do I Choose a Contact Cleaner?
Electrical Contact Cleaners dissolve oils, remove dirt and other particulates and refresh electrical connectivity on relays, switches and other devices. They safely remove grit from hot motors and dust from inside electromechanical relays and keyboards. They are also effective at removing contaminants from hard-to-reach areas on electrical connectors, power supplies, junction boxes and distribution panels. … Continued