Electronics Forum | Fri May 22 08:04:30 EDT 2009 | stevezeva
Have any of you ever worked with Actel's QFN 180? A three row I/O QFN? Actel has a published paper on design and assembly guidelines, but we're finding that they are pretty much generic, and don't really work as well as they lead you to believe. ht
Electronics Forum | Tue May 26 15:39:16 EDT 2009 | mikesewell
Amkor's MLF guidelines are very similar to Actels. 1 to 1 on the stencil to part pad on the I/O pads, 75% with a grid windowpane, 0.125 mm/5 mil stencil. For example, the Actel area ratio for a 0.3 mm sq. pad and 0.125 mm stencil is 0.6 which seems
Electronics Forum | Wed Oct 14 08:39:01 EDT 2009 | edmaya33
Anybody here work with Viscom S3088-II QS SPI? I heard this machine offers an ultra high speed of inspection and a state of the art features. We have been working with Orbotech P36+ but all we got is headache. A 2K US$ illumination board always fai
Electronics Forum | Wed Mar 25 14:46:08 EDT 2020 | stephendo
What about designators? Using gerbers to program a pnp machine was always a last resort to be done only after much complaining and begging for proper CAD data. Back in the day I used UniCAM to program a mydata. After getting it figured out it was eas
Electronics Forum | Thu Mar 31 15:53:23 EDT 2022 | stephendo
And pin outs of both. Once I saw a SOT-6 replaced with a miniSOT-6 (IIRC) The pin outs of the two parts were different. We did make an adaptor board and it wasn't too bad. We populated a panel of the adaptor boards, depanelized them and put them in t
Electronics Forum | Thu Sep 23 12:42:02 EDT 1999 | Bob Barr
Dear Administrator, On 9/25, a forum user named Seli posted a question titled "Electronic Manufacturing on the Beach". Out of 11 responses to his posting, exactly one had anything to do with his question. The other 10 were completely off topic. P
Electronics Forum | Fri Jul 23 10:47:31 EDT 1999 | Mark D. Milward
There is a practise within the industry of an Inspector inspecting a board, and that same Inspector performing touch-up. My opinion is that the Inspection and Touch-up operations should be separate functions whereby the Inspector is not performing th
Electronics Forum | Wed Sep 25 10:56:27 EDT 2002 | xrayhipp
Yeah, perhaps lean more towards a ramp-to-spike profile - reducing the soak time and add a littel heat to your temp above liquid. This has worked for us with water soluable paste as we are not required to use no-clean and utilizing a 6-zone oven. G
Electronics Forum | Fri Jan 17 16:42:47 EST 2003 | MA/NY DDave
Gee this was a fun tread. I guess you mean Univeral Instrument Corporation's products. I would give them a call since they have a training center in Binghamton, NY and may have what you need. Trust me, They need the business and should jump all ov
Electronics Forum | Tue Mar 01 10:50:32 EST 2005 | pr
I think the 1st option would be the best. I have found that a touch up person WILL TOUCH UP SOMETHING, regardless of the electrical needs of the board. This leads to a lot of unnecessary rework of joints. I would hope QC is tracking the defects and t
