Electronics Forum | Thu May 14 12:29:39 EDT 2015 | christinapaz
Hi All, On occasion we see components that have gone through pick and place and are slightly misaligned. Currently, operators manually adjust these misaligned components to prevent reflow failures. However, I am wondering if this readjustment may be
Electronics Forum | Mon Dec 27 19:10:58 EST 2021 | ppcbs
The component should float into place provided you have the correct amount of solder paste. Perform a solderability test on the pads. We have come across new components with oxidation that prevents wetting. This will cause components to not self ali
Electronics Forum | Wed May 02 10:10:20 EDT 2012 | isd_jwendell
I don't think hole alignment (registration to the copper layer) would be good enough for QFN and uBGA packages.
Electronics Forum | Tue Jan 05 13:26:13 EST 2021 | ppcbs
We are working to upgrade our BGA Rework Systems to place BGA's up to 150mm in size. We are encountering an issue that I wanted to pose to this group. When we get above 50mm in chip size, which is the field of view for the vision systems Prism, the
Electronics Forum | Fri Sep 10 17:18:10 EDT 2010 | spitkis2
They may be misaligned so much so that self centering would not occur. How are you placing the micro BGA's? Depending on how the boards are transported onto the oven's conveyer, by the time they start to go through the oven, there could be additio
Electronics Forum | Sat Sep 12 08:01:59 EDT 2020 | majdi4
Could you just share with us those information : *BGA datasheet ?? *Stencil design ?? *Stencil Thikness ?? *Type of under-film you want to work with : adhesive or self-adhesive ??
Electronics Forum | Fri Mar 12 14:20:25 EST 2004 | russ
MiniMicro stencil has stencils and a holder/aligner. I use their stencils but have not used their tooling. I use the eyeball align - tape and secure method. www.minimicrostencil.com Not affiliated with in any way. Russ
Electronics Forum | Thu May 03 07:08:27 EDT 2012 | almoore
I'm thinking of rework, not production. In order to rework the part you have to have an expensive split vision alignment system. A simple standard change would eliminate the need for an expensive system.
Electronics Forum | Sat Feb 14 13:28:47 EST 1998 | ASHOK DHAWAN
I am beginer in BGA assembly and am confused in selection of pick and place option. As per book on 'implementation of BGA Technology-by 1995 aeic inc. states that BGAs reflow is quite forgiving and you need only Mechanical centering of PBGAs. The IPC
Electronics Forum | Sun Apr 12 08:49:12 EDT 2009 | mki
Hello, I bought used QUAD IVc MKII with transport in "as-is" condition, powered it up (without air and PCB on machine) and all axes (X, Y, Z AND T(heta)shows signs of life. Machine is performing HOME positioning self test. I am not familiar with QUA
