Electronics Forum | Mon Apr 30 08:34:08 EDT 2012 | almoore
We use a small surface mount connector that has two alignment pins to ensure proper alignment. It works fairly well. I'm thinking that this simple alignment solution might work well with lead less parts like a BGA or QFN. I can hand assemble QFNs
Electronics Forum | Wed Jun 27 15:21:28 EDT 2001 | H.Richter
Hello; Can anyone give me advise on the best way to manually align a 20"x20" stencil on a semi-automatic printer? We have a board with a 16 mil pitch QFP and have difficulty aligning the stencil. We have tried various alignment schemes on the pcb an
Electronics Forum | Wed Jan 23 14:30:09 EST 2008 | operator
Additionally, I have seen the bad align error from incorrect pickup Z. Quad align can freak out sometimes if it sees something it doesn't like. If all else fails I just reboot and 99% of the time the problem goes away.
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 | Thu Dec 18 14:38:58 EST 2014 | rangarajd
Hello, I don't have any experience with Juki. Visited one of their booth recently and I was told they use a laser for alignment. How does this work? Is there any advantage over the traditional vision alignment? Thanks!
Electronics Forum | Sun Dec 21 23:30:09 EST 2014 | sarason
Since the Laser alignment bit is attached to the head and you don't have to move the part to a camera location, before placing the component on the board it is about the fastest method there is of getting accurate component alignment. With more moder