Electronics Forum | Mon Feb 28 06:06:04 EST 2005 | Guest
I'm looking for recommendations on pad and stencil design for products with 0.5 mm pitch BGA's. The latest info that I found in the archives of this forum dated more than a year ago. It didn't give me much confidence that assembly of such components
Electronics Forum | Tue Nov 01 12:29:35 EST 2005 | russ
I just noticed that you mention 2-5mm off, that is huge! It would seem to me that there is an external force here to move a part that far. Things such as a heavy air stream that for some reason is really hitting this part, something on the PCB unde
Electronics Forum | Mon Jan 22 14:22:46 EST 2007 | muse95
Actually, I've been looking into this myself, and the B version doesn't help any more than the A version. The tables still only go to 4.5mm. And Appendix B has a bunch of formulas with undefined variables that I haven't been able to figure out. An
Electronics Forum | Fri Jun 01 22:09:03 EDT 2007 | mika
Hi Aj, What type of QFP are we talking about? We had in the past big problem with QFP-304 0.5mm pitch from ALTERA. Similar as you describe. Note. No problem with QFP-256 or QFP-196 0.5mm pitch, or anytying less than -304:s Can You be a little bit mo
Electronics Forum | Mon Jun 07 15:54:56 EDT 2010 | thanh
ECLIPSE-II After calibration, now i'm having an issue that placement between lazer and camera off about .5mm on the Y mount. if parts go to camera, the placement are good. but parts that placing with lazer it off about .5mm at Y for all rotation. do
Electronics Forum | Thu Sep 07 07:36:57 EDT 2017 | tsvetan
we use 0.12 mm stencil with 0.3 mm apretures for 0.5mm step FBGA153 memory without problems the solder paste is SAC305 Class4 http://www.olimex.com/Products/Components/Soldering/SOLDER-PASTE-SAC305-CLASS4/
Electronics Forum | Fri Sep 22 14:10:19 EDT 2017 | slthomas
Just for the sake of passing along the information, the fine grained stencil provided zero improvement over the standard PhD stainless and was not nearly as helpful as the baked-on nano-coating. We probably won't be trying that again unless we go und
Electronics Forum | Mon Feb 04 12:28:28 EST 2008 | jseagle
1.0mm (0.039") 1.75X >0.5 to 1.0mm (0.02 to 0.039") 4X 0.25 to 0.5mm (0.00984 to 0.02") 10X
Electronics Forum | Fri Jul 09 11:28:24 EDT 1999 | Earl Moon
| Has anybody successfully used an automated dispensing system to put solder paste dots on .5 mm pitch pads?? I need to replace some Meritec tsop sockets and I don't want to use the single site stencils for .5 mm parts. | Carol, Don't blame you f
Electronics Forum | Thu Oct 30 21:06:20 EDT 2008 | ashley
Hello mickd, For Fuji practice, the primary tooling hole preferably be 5mm from the edge of the PCB (lower right hand corner). This is the reference X0, Y0 co-ordinates in the Fuji program where placing co-ordinates going LEFT will be -ve value & go
