Electronics Forum | Wed Apr 18 09:31:24 EDT 2007 | aj
Hi, Can you advise the footprint dimensions used on the PCB ? Thanks, aj...
Electronics Forum | Thu Apr 12 09:13:41 EDT 2007 | aj
Hi all, What stencil aperture designs do you use for 0402 components? Thanks in advance for replies. aj...
Industry News | 2011-06-24 18:52:10.0
Vicor Corporation, recently evaluated DEK’s award-winning Nano-ProTek stencil nano coating and has reported excellent results. On a densely populated board with multiple 0402, 0201, BGA and micro-BGA components, Nano-ProTek helped improve CpK and yield.
Industry News | 2010-04-10 23:59:50.0
LOS ALAMITOS, CA - Following the success of their 2007 test board and kit, Practical Components and Aim Solder have updated their offering with a new AIM print test board and kit that is designed to include many printing challenges commonly found in manufacturers' assemblies.
Technical Library | 2017-09-28 16:36:33.0
These nano-coatings also refine the solder paste brick shape giving improved print definition. These two benefits combine to help the solder paste printing process produce an adequate amount of solder paste in the correct position on the circuit board pads. Today, stencil aperture area ratios from 0.66 down to 0.40 are commonly used and make paste printing a challenge. This paper presents data on small area ratio printing for component designs including 01005 Imperial (0402 metric) and smaller 03015 metric and 0201 metric chip components and 0.3 mm and 0.4 mm pitch micro BGAs.
Technical Library | 2023-05-02 19:06:43.0
As 0402 has become a common package for printed circuit board (PCB) assembly, research and development on mounting 0201 components is emerging as an important topic in the field of surface mount technology for PWB miniaturization. In this study, a test vehicle for 0201 packages was designed to investigate board design and assembly issues. Design of Experiment (DOE) was utilized, using the test vehicle, to explore the influence of key parameters in pad design, printing, pick-andplace, and reflow on the assembly process. These key parameters include printing parameters, mounting height or placement pressure, reflow ramping rate, soak time and peak temperature. The pad designs consist of rectangular pad shape, round pad shape and home-based pad shape. For each pad design, several different aperture openings on the stencil were included. The performance parameters from this experiment include solder paste height, solder paste volume and the number of post-reflow defects. By analyzing the DOE results, optimized pad designs and assembly process parameters were determined.
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SMTnet Express, September 2, 2021, Subscribers: 26,737, Companies: 11,436, Users: 26,825 Tombstoning Of 0402 And 0201 Components: "A Study Examining The Effects Of Various Process And Design Parameters On Ultra-Small Passive Devices
