Technical Library: universal and instruments and 4

The Pin-in-Paste (or AART) Process for Odd Form and Through Hole Printed Circuit Boards

Technical Library | 2007-09-27 16:18:15.0

Considerable interest exists in the process known as the pinin- paste, or the Alternative Assembly and Reflow Technology (AART) process. The AART process allows for the simultaneous reflow of both odd-form and through hole devices as well as surface mount components. This process has several advantages over the typical mixed technology process sequence that includes wave soldering and/or hand soldering, often in addition to reflow soldering.

Universal Instruments Corporation

Low Force Placement Solution For Delicate and Low IO Flip Chip Assemblies

Technical Library | 2007-06-27 15:43:06.0

Traditionally most flip chips were designed with large bumps on a coarse pitch. However, as the trend towards smaller, more compact assemblies continues the sizes of semiconductor packages are forced to stay in line. New designs are incorporating smaller bump diameters on increasingly aggressive pitches, and in many cases decreasing the total IO count. With fewer and smaller bumps to distribute the load of the placement force it is becoming increasingly vital for equipment manufacturers to meet the challenge in offering low force placement solutions. One such solution will be presented in the following discussion. Also presented will be ways to minimize the initial impact spike that flip chips experience upon placement.

Universal Instruments Corporation

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