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MicroCare Expert Educates the Electronics Industry on Optimizing Benchtop Cleaning

Nov 05, 2017

Russell Claybrook, regional sales manager for MicroCare.

Russell Claybrook, regional sales manager for MicroCare.

Removing contamination from printed circuit boards remains a huge reliability and warranty issue for PCB manufacturers. One of the cleaning experts from MicroCare Corp., the industry’s leading manufacturer of critical cleaning products, addressed that specific issue at the Texas Cleaning and Reliability Workshops in Austin and Dallas on Oct. 23rd and 25th, 2017.

Russell Claybrook, regional sales manager for MicroCare, stated that process control remains a major deficiency in the cleaning of PCBs, whether it be on the benchtop or in an automated cleaning system.  With more than 27 years of experience working in the industry, Claybrook has expertise in both PCB assembly and rework. He presented methods and tools for creating an effective ‘Process Control Program’ for PCB cleaning.

“Bench top cleaning still is performed with the same methods companies used 40 or 50 years ago,” he explained. “It’s ironic that manufacturers devote enormous amounts of energy and capital into process control at printing, placement and reflow, only to abandon that discipline at the bench — the final assembly area most circuit boards pass through before shipping to end users.”

“The workshops were great for bringing together local circuit board assemblers, with cleaning experts from across our industry in an educational forum,” Claybrook added. “It provided me with an opportunity to share ideas for writing a PCB cleaning process while showing some of the tools MicroCare can offer for quantifying materials used in that process.” 

The symposiums were well attended with about 100 registered participants. The Richardson (Dallas) workshop included attendees from across the spectrum of electronics and semiconductor manufacturing. Engineers and experts from Elbit Systems, Fujitsu, Qorvo Semiconductor, Raytheon and many others participated.

“’Dip-and-brush’ cleaning has been the de facto standard for PCB cleaning for years,” Russell explained. “But with today’s new solvents, new PCB designs, new component configurations, new fluxes and pastes, the efficacy and cost-effectiveness of this old-fashioned method really is being called into question.”

“Any  cleaning process should be defined with a specific quantity of cleaning materials for each cleaning task,” he added. “Furthermore, the process must stress the four steps for successful cleaning:  wet, scrub, rinse and dry” cited in “To Kill A Circuit Board: Perils In Manual Soldering and Cleaning Process” by Cheryl Tulkoff. This paper was a major resource for Claybrook’s presentation.

Originally Presented at SMTAI 2014 in Chicago, Ms. Tulkoff wrote: “Manual soldering and cleaning processes are among the least controlled processes in printed circuit board assembly. As a result, they create special challenges to both quality and long term reliability.

“If flux residues must be removed manually, a four step process of wet, scrub, rinse, and dry is recommended. Use some form of dispensing system for the solvent to control the flow and volume,” Ms. Tulkoff concludes in her paper.

The workshop gave MicroCare the opportunity to push this message forward and to share its expertise on the best cleaning methods for the industry. For automated cleaning, MicroCare recommends vapor degreasing processes using a modern, environmentally-progressive low-boiling solvent. On the benchtop, the best method is a controlled dispensing systems such as the TriggerGrip™ system, which attaches onto an aerosol and delivers faster, better and safer cleaning, which costs less and cleans better than sloppy dip-and-brush cleaning. For further information on benchtop cleaning and the TriggerGrip™ system visit www.microcare.com.


Since 1983, MicroCare has been the leading manufacturer of cost-effective, environmentally-progressive products for precision cleaning, coating and lubrication. These products are supplied to a wide variety of industries, such as electronics, metal finishing, transportation, photonics, medical devices and aerospace with a goal of helping clients improve their own products, their quality and their processes. MicroCare also features the industry’s leading product stewardship program, helping companies to be certain they are using these products properly, safely and economically.

MicroCare Corporation has an ISO 9001-2008 registered quality system and is continually improving and expanding its innovative range of products ensuring it is the favoured choice globally. MicroCare Corporation includes the MicroCare™, Sticklers™ and MicroCare Medical™ products among its many brands.


 

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