A New Angle on Printing
Published: |
June 25, 2009 |
Author: |
George Babka, Scott Zerkle; Assembléon Americas, Frank Andres, Rahul Raut, Westin Bent; Cookson Electronics Assembly Materials, Dave Connell; Research in Motion. |
Abstract: |
Although blade contact angle is a critical stencil printing parameter, screen printers have so far been unable to vary it "on-the-fly", in software. The recently released Assembléon/Yamaha YGP printer has changed this, and has made new application research possible to study a crucial 01005 process variable for feature printing that previous researchers have ignored. We have designed the first robust solder paste printing process for 01005 components that uses only a single printer and stencil. We have studied transfer efficiencies across all the major parameters, with important results for reliable high-density equipment assembly. Our findings show that a variable blade contact angle can print fine features with wider process window, and reduce overall process variation between boards produced from a line.... |
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