Electronics Forum | Tue Jun 07 10:38:34 EDT 2011 | davef
Boots: Here's several methods for guessing at the amount of solder on your connection: * First, 'Down & Dirty' ** Assume that the solder is flat, which is reasonable since it's 'flattened' by the component package ** Assume 100% paste transfer from t
Electronics Forum | Tue Jun 07 20:56:47 EDT 2011 | aoiguy
Any and all input will be greatly appreciated. So here it goes. I'm having an issue where the cad I'm getting from customers is referencing pin 1 as the parts placement. This isn't an issue for surface mount, however the aoi machine that we have in
Electronics Forum | Tue Aug 23 16:48:29 EDT 2011 | jax
assuming Sn05Pb93.5Ag1.5 Without knowing what you are trying to solder, PTH or SMT, the time might not be that far off. Does that time include stripping, cleaning, plating the leads prior to soldering onto the board?... pre-tinning the board as well
Electronics Forum | Wed Sep 07 00:47:53 EDT 2011 | woodsmt
PCB, What is telling you that you have cold solder? You do not give much info. My QA/QC love this term to describe a multiple of issues. They are usally very wrong. If this is a reflow process and it just affects one part? An SSOP is not likley t
Electronics Forum | Mon Sep 19 19:22:11 EDT 2011 | henrytcx89
Thanks for taking ur time to answer this. =) The pick and place machine is just pick from wafer(on tape) and place into waffle pack. I read from some of the sources saying that the ejecting needle and the vacuum pick up bits could cause the die to c
Electronics Forum | Thu Oct 27 13:42:12 EDT 2011 | sjs2303
I know what you mean but have never found a tool that would do this sufficiently. For higher value parts you should keep them in a bag for the next time you run a job that uses that part and hand fit them. The nature of the feeders means that you w
Electronics Forum | Sat Jun 09 10:38:39 EDT 2012 | anton99
Thank you both ( Gnus and Phil) for the replies. I will try to answer both with a new post. I like the idea of the stock room splitting the reels but our reels are released to the floor where the Magload ( Kit building) area stores them and builds t
Electronics Forum | Mon Aug 13 12:38:38 EDT 2012 | grahamcooper22
Maybe the area ratio between the sides of the stencil apertures and the aperture opening is too low for the spec of the paste ? So it will tend to stick in the apertures. ...only solution is thinner stencil or a paste that can release easily when are
Electronics Forum | Thu Aug 30 18:51:39 EDT 2012 | kahrpr
My first question is how many failures have you seen due to hair length I will bet zero. So upsetting your employees for something that will not reduce your failure rate by one board is pointless. However someone mentioned hair in the process that i
Electronics Forum | Tue Sep 18 05:34:50 EDT 2012 | sarason
Juki are marvelous machines. Don't know about the MPAG3. If you need to load files into the Juki my program PCB Synergy can generate the 730 , 750 and 760 Juki files. From memory the 740 can read one of these formats. If not I can add it in. For th
