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Using Rheology Measurement As A Potentially Predictive Tool For Solder Paste Transfer Efficiency And Print Volume Consistency

Published:

July 2, 2020

Author:

Mitch Holtzer, Karen Tellefsen and Westin Bent

Abstract:

Industry standards such as J-STD-005 and JIS Z 3284-1994 call for the use of viscosity measurement(s) as a quality assurance test method for solder paste. Almost all solder paste produced and sold use a viscosity range at a single shear rate as part of the pass-fail criteria for shipment and customer acceptance respectively. As had been reported many times, an estimated 80% of the defects associated with the surface mount technology process involve defects created during the printing process. Viscosity at a single shear rate could predict a fatal flaw in the printability of a solder paste sample. However, false positive single shear rate viscosity readings are not unknown....

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Company Information:

Alpha Assembly Solutions

Alpha Assembly Solutions is a world leader in the development, manufacturing, and sales of innovative materials used in the assembly electronics, industrial joining and Photo Voltaic market places.

South Plainfield, New Jersey, USA

Manufacturer of Assembly Material

  • Phone 814-941-1694
  • Fax 814-940-3811

Alpha Assembly Solutions website

Company Postings:

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