Reading time ( words)
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.
Real Time with... NEPCON China
At the recent NEPCON China 2018 event in Shanghai, Michael Zahn, development manager for Christian Koenen GmbH, explains how stencil technologies can improve the solder paste printing process and ensure first pass yields.
Ken Horky, Peterson Manufacturing
Assist time is the human intervention required to keep a machine producing during normal operation. It does not include errors, maintenance, setup, and prototyping. There are many reasons for a machine to require assistance. PCB loading, stencil wiping, paste addition, feeder replenishment, and PCBA unloading—some require labor, some can be automated, but all will require some amount of time to complete.
Stephen Las Marias, I-Connect007
Of the three elements involved in the solder paste printing process—stencil, solder paste, and printer—the stencil is considered one of the major factors affecting the transfer efficiency, accuracy, and consistency, of solder pastes into the pads, especially with the continuing trend towards miniaturization.