Smt Assembly Challenges And Proven Solutions For Improving YieldsAuthor: Robert Dervaes
Company: FCT Assembly
Date Published: 10/13/2013 Conference: SMTA International
There are many variables in the SMT assembly process. Some, like SMT assembly equipment, process parameters, and personnel, are directly controlled by the SMT assembly company. Some, like PCB layout, PCB fabrication, component availability, component substitution, and solder paste stencil fabrication, are provided either by the end customer or through suppliers. There are many times where everything in the SMT assembly process is within specifications, but SMT defects still occur and yields are not as expected. What challenges can those in SMT assembly expect to face when building these more advanced assemblies? What can be done, if anything, to reduce SMT defects and improve process yields?
This paper will present the most common SMT yield challenges being confronted today, discuss their root cause, and then provide solutions that are proven, repeatable, and economical.
Root cause analysis, yield improvement, SMT defects, stencil, solder paste release, reflow
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