Electronics Forum | Fri May 15 00:07:38 EDT 2015 | aapsmt
there can be so many different causes. can be component library height issues. step program z axis offsets - i have seen accidental positive values entered so the components are literally dropped onto the pcb haha. but it does depend on the size of
Electronics Forum | Fri Jan 29 16:17:13 EST 2021 | donnie15
The impact is low on larger pitches and pad sizes. as things get to the .4mm pitch the pad differences start affect your ball size and yields. The trace size going into the pads and the solder mask relief can cause some odd shaped pads with signif
Electronics Forum | Thu Jul 27 09:03:18 EDT 2000 | Wilson
Dear all, Does anyone know where I can purchase a wave soldering machine that must be well-known and can support 24" x 24" PCB size? Or much larger than this size is required. Any suggestion will be appreciated in advance. Best Regards, Wilson
Electronics Forum | Thu Jul 20 11:53:34 EDT 2000 | John Thorup
Hi Dave The larger the gage number the smaller the inner diameter. There is a nice chart relating color code, gage, ID and OD in the EFD Catalog. They don't list a web address but their phone is 800/556-3484. Email me if a fax copy would help John
Electronics Forum | Fri Jun 23 09:54:20 EDT 2000 | Dave F
Igmar: Chrys and JAX make good points. I'd like to add that you should be careful that you don't starve larger chip components of solder when using a 4 thou stencil.
Electronics Forum | Mon May 01 13:30:45 EDT 2000 | JAX
Erhard, I am not sure what you mean. I believe bulk case placement only refers to C's & R's. Even then placing only 0603 and 0805. I assume you are talking about larger parts since you mention trays???
Electronics Forum | Mon Jun 11 21:27:43 EDT 2001 | procon
Way to go CPI! This is a classic example of design. Many people experience this when the have an 0402 close to a QFP or other large components. The pad closest to the larger component will become liquidous later than the pad farthest. Hence, a new t
Electronics Forum | Thu Jul 26 12:27:18 EDT 2001 | gdstanton
Bob, Try looking into the Sniper SMD-7007. We use it and it's pretty effective. They come with standard 16x12" CCA holders but they are larger sizes available as an option. The system costs about $35k. See attached web URL: http://www.apecorp.co
Electronics Forum | Fri Oct 29 10:44:35 EDT 1999 | Doug Nebel
We have placed them before. You can only inspect the perimeter, but with the larger pitch in wasn't a problem. We also picked off matrix trays, but the BGA's we did had no center array. But if that type are on T&R it should work as well.
Electronics Forum | Sat Apr 04 09:47:48 EST 1998 | John A. Ross
For nearly 30 months I have waited on Contact Systems resolving indexing and clearanceproblems with their 32mm and 44mm tape feeders. I think that the service that they offer is pretty poor. Am I alone? Does anyone else use their larger feeders a
