Electronics Forum | Fri May 29 20:15:15 EDT 1998 | Steve Gregory
Whoo-doggies Jason, you said a mouthfull!! (GRIN) Anyways, 'member what I said about me being a pack-rat? Guess what? I found some documentation that I've had for a while that does document the self-alignment forces that goes on when reflowing. I ha
Electronics Forum | Fri May 29 13:42:34 EDT 1998 | Steve Gregory
Hi Jason! I can probably find something documented for you, but the easiest way to convince your QA people is just to show them. If you have a board around that has some 1206 locations all in a row, print the board with paste and then plac
Electronics Forum | Fri May 29 16:12:11 EDT 1998 | Jason Gregory
| Hi Jason! | I can probably find something documented for you, but the easiest way to convince your QA people is just to show them. | If you have a board around that has some 1206 locations all in a row, print the board with paste and the
Electronics Forum | Mon Jul 15 19:18:51 EDT 2013 | microaide
Does anyone know how to make the vision alignment work on a Quad 4C? What I mean is make it work right, and reliably. I know how to define the component for inspection (lead pitch, lead count, dimensions, tolerances, etc.), and I know how to set ligh
Electronics Forum | Tue Sep 27 11:43:32 EDT 2016 | tnisbet
Yes you can open the tolerance, and that’ll usually work for a bit. Is the LAE is linked to multiple parts? If so, then the easiest thing is to open the tolerance. If not, that’ll require another route to try. Is it happening to all of the components
Electronics Forum | Fri Nov 07 11:32:36 EST 2003 | Gabriele
we experimented round pad for 0402, it improves chip self alignment and reduce tomb stone effects. On 0603, half round shape also gave guud results. G
Electronics Forum | Thu Oct 02 15:34:08 EDT 2014 | arifa_anees
the data collected from a standard SMT process is typically very noisy due to the natural.Initially, the most common evaluation method was placement yield.Offset Placement After Solder Screen-printing can reduce or eliminate these defects through cor
Electronics Forum | Tue May 19 13:53:53 EDT 2015 | dyoungquist
Parts will self align using Pb free paste as well. If your parts are not self aligning with Pb free paste, you have a problem with either your paste or the oven profile you are using.
Electronics Forum | Wed May 02 09:28:20 EDT 2012 | almoore
The surface tension of lead free solder alloys doesn't self align as well as it does with leaded alloys. Taking the guesswork out of alignment would negate the need for expensive split vision systems and make the parts hand reworkable.
Electronics Forum | Fri May 15 08:18:17 EDT 2015 | emeto
We all agree that you need to have your machine fixed. It probably needs calibration. Using Lead paste will help the parts to self align in the oven - however your misplacement should cover at least 50% of your pad. Pb free paste will not self align
