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The solder paste printing process accounts for almost 70% of PCB assembly defects. The December 2017 issue of SMT Magazine, which is available now, looks into the critical factors causing these challenges, and features strategies, tips and tricks, to help assemblers improve the yield and quality in the solder paste printing operation.
Read the December issue of SMT Magazine, now on the virtual newsstand, and available for delivery in your e-mailbox by subscribing here.
Be sure to download the PDF version for future reference.
Jason Fullerton, Alpha Assembly Solutions
One common question from solder customers is, "How do I test and evaluate new solder pastes?" Although that seems like it should be a straightforward question with an easy answer, this could not be further from the truth. This article tells more about this, and how to best select solder pastes for your product.
T. O’Neill, C. Tafoya, and G. Ramirez, AIM Metals and Alloys
Building upon an earlier study that focused on solder paste powder size, room-temperature aging and PCB pad and aperture designs, this study continues to investigate powder mesh size, but also examines stencil surface treatments and stencil foil tension.
Stephen Las Marias, I-Connect007
The flexible printed circuit market is on track for growth. But dealing with flex circuits during assembly is very different from rigid PCBs. This article highlights some of the assembly challenges when working with flex circuits, and strategies to address them.