Check out this week's SMT007 Week Newsletter.
April 17, 2019 

Tips & Tricks: Water Contamination and Flux Expiry

Jason Fullerton, MacDermid Alpha Electronics Solutions

First, can water contamination cause failure? Absolutely! Rainwater contains much higher electrochemically active content than the deionized water used for cleaning PCB assemblies and can lead to corrosion and dendritic growth. If discovered before introduction to the service environment, cleaning may be possible, and the assemblies may be able to be salvaged. Exposure to rainwater in the service environment is a sure path to failure unless the assembly has been ruggedized against such exposures as part of the design... More >

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APCT is a manufacturer of high reliability printed circuit boards.
Headquartered in Santa Clara, CA, the heart of the Silicon Valley, APCT has 4 manufacturing sites, including 2 in Southern California and 1 in Wallingford, CT. Our technologies include standard through-hole; advanced HDI work; and flex/rigid-flex. Our certifications support both commercial & military work, highlighted by IPC 6012 Class 3 & 3A, AS9100D, NADCAP, MIL-55110 & MIL-PRF-31032. Our factories are set to manufacture prototype to mid-production work and full-scale production orders are handled offshore through APCT Global. Corporate wide, our cycle times are consistently faster than industry standards. Learn more.
Latest Columns

Powerful Prototypes: Moisture Sensitivity—What’s the Risk, and What Can You Do About It?

Duane Benson, Screaming Circuits

I recently traveled to New Orleans, Louisiana, for a week of beignets, fried food, and urban exploration. It’s a good thing that parts of the exploration came in the form of walking as some level of exercise was needed to compensate for the lack of greens and heavy emphasis on the word “fried” that went along with most of the food.

Outside of the dietary concerns, the humidity was my only complaint. I’m a wimpy West Coaster, as far as weather is concerned. Even with temperatures in the 50s and 60s (Fahrenheit), I could still get all sweaty in the 85% humidity. That surprised me. And something else related to humidity (see what I did there) that surprised me when I first learned of it was that plastic can absorb moisture. I had always thought of plastic as being a moisture barrier. Certain types of plastic are, but not necessarily the plastics and resins typically used to construct electronics gear.

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It’s Only Common Sense: Five Steps to Turn Leads Into Gold
Dan Beaulieu
EPTE Newsletter: Printable and Flexible Electronics in Taiwan
Dominique Numakura
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This Month's Jobs
Printed Circuit Board Solutions: Opportunities Await

APCT, a leading manufacturer of printed circuit boards, has experienced rapid growth over the past year and has multiple opportunities for highly skilled individuals looking to join a progressive and growing company...

Apply Now

Technical Service Engineer (PCB Process Engineer)

Plano, Texas

To provide expert technical advice on production and engineering issues in the application of solder mask and other Taiyo products...

Apply Now


More Job Opportunities
APR. 29 WEBINAR: Flexibility in the Manufacturing Process
The automatic optical inspection of solder joints after the selective soldering process is increasingly becoming the focus of process optimization. Regardless of whether the solder joints are realized using induction, laser or piston soldering processes or miniature waves, the quality of the selective solder joints must be evaluated automatically and reliably. How can selective solder joints be inspected automatically and reliably? Which technologies are used in the flexible 2D/3D camera modules for selective solder joint inspection? Learn this and more during the Goepel webinar on April 29th. Click to Register.
Current SMT007 Magazine Table of Contents

Youth and Technology on the Rise

It's a courageous new world for our industry, the sheer number of new technologies in development will change not only what we build but how we build it. And the brave youth coming up behind us are perfectly willing to make use of these new technologies.


More SMT News & Articles
Links and Events


04-29-19 Goepel: Flexibility in the Mfg. Process »


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RoHS Components »


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