Electronics Forum | Mon May 09 10:52:29 EDT 2005 | patrickbruneel
Hannu, First and for all I have a problem with your question "tried and trusted" for the simple reason that you are going to change too lead-free. Ultrasonic soldering or welding is not new, as far as I know it is only used applying the ultrasonic
Electronics Forum | Thu May 05 12:31:27 EDT 2005 | russ
Not in this case, these BGAs were lead free and the profile used was for a lead part. I guess I will give you the whole story. These boards were sent to us from a customer to have the BGAs replaced for an unknown to us reason. We removed the parts
Electronics Forum | Mon May 09 15:21:28 EDT 2005 | tforbes
Hello, I am hoping that someone can shed some light on my somewhat strange question. The group that I recently started with have had a process in place where they do not run crystals through their wave solder process. From my previous work experien
Electronics Forum | Wed May 11 06:22:33 EDT 2005 | rlackey
The above suggestions look to be the most likely, however on the off chance: Going back a decade we saw damage to crystals & resonators due to induced harmonics from ultrasonics (usually in the wash). Some fluxer systems use ultrasonics (I think
Electronics Forum | Mon Jun 20 10:59:18 EDT 2005 | Jason Fullerton
Extra cooling is better (Alpha recommends -3 to -7 degC/sec) for cosmetics. Less chance of s o called 'cooling lines' that look similar to 'cold' tin-lead joints. (Seems a bit steep to me - I worry about the risk of cracking ceramic caps.) Might be
Electronics Forum | Wed May 11 16:13:49 EDT 2005 | keegomaster
Rob, - with free software upgrades included, how about hardware upgrades!? no prob paying for those? - "good part editor" do you have one you specially love/hate? - Bar corde reader is already considered, we're thinking on adding a DataMatrix reade
Electronics Forum | Wed May 11 18:43:36 EDT 2005 | Frank
Well, we don't use AOI, but a 22x28CM (8x11 inches) board size seems a bit small. Our pick and place machines are running boards as big as 20x18 inches (51x46CM) and most average in the 16x14 inch range (41x36CM). We are starting to get larger boar
Electronics Forum | Thu May 12 11:02:48 EDT 2005 | deyo
I've looked at a lot of AOI's in the past couple years. First and formost KEEP IT SIMPLE! Second clamp the boards down this will aid in keeping the camera feild of veiw stable, most that I've looked at this was an option not a stock feature. Also sid
Electronics Forum | Wed May 11 11:36:43 EDT 2005 | rlackey
Hi Peter, There is no Silver in it, which even in small quantities (0.3%-4%) improves solderability. I would try and see a demo on a similar machine to yours with a similar product as everyone can get their solder to look great in lab/showroom site
Electronics Forum | Tue May 17 03:48:51 EDT 2005 | Base
YV100, easy... YV112 uses a dual work-area, dual gantry machine in which the gantry does X and the PCB-table does Y movements. Also each gantry can only work on one PCB work-area and can pick form only one side of the machine. Basically you have two
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