Electronics Forum | Mon Aug 19 16:57:38 EDT 2002 | dragonslayr
Individual process steps are approximately the same length of time for reworking a BGA. You seem to be comparing the use of the automated SMT line versus an off line rework station. Consider that the off line station is a complete paste print, pick
Electronics Forum | Sat May 12 00:04:36 EDT 2001 | zam_bri
The product I'm running currently consist a mix of 20 mil pitch QFP, 50 mil pitch, 0402, BGA and variable size of connectors from small to big, on OSP finished PCB. Running intrusive reflow with a mix packages is a real headache, esplly when you hav
Electronics Forum | Wed Jun 10 17:30:44 EDT 1998 | FAC
When creating part data�s for BGA or QFP style components, the line scan camera will be utilized (Camera No. 4). Using a Single nozzle type placing head, a nozzle capable of sufficient vacuum, and front lighting the part can achieve placement of a 74
Electronics Forum | Thu Jul 25 08:58:22 EDT 2019 | Matt
Hey all, i'm hoping to get some feedback from the community on baking process versus a dry box. current process we have for rework of PCBs is to perform a 16 hour bake cycle on hardware before BGA rework is performed. however this process is ineffi
Electronics Forum | Wed May 10 00:27:46 EDT 2006 | Chris
Russ, By a longer profile you mean a more even slope across the entire profile. Unfortunately I only have a 5 zone oven that is fairly short. How many heated zones are you using? Did you shrink the 0402 pad design and leave less pad exposed out a
Electronics Forum | Thu Nov 07 10:59:11 EST 2002 | pjc
IPC-7525 "Stencil Design Guidelines" is a good reference document to have. Here are notes from a Tessera, (a major mBGA mfg.), study- "Application Note Solder Stencil Requirement for mBGA" The stencil aperture is to be square, equal in size to the l
Electronics Forum | Fri Mar 11 13:03:08 EST 2022 | poly
I've just bought the pick and place machines (universal Genesis GX11 and GC30) and oven (RO300fc-c) but I am confused about printers. I've put in an offer for an MPM Accela (2006 or 2008) but I'm not sure if it's a good idea / deal. It's being sold i
Electronics Forum | Wed Jun 26 21:56:24 EDT 2002 | ianchan
Hi mate, there is another thread ongoing about such an BGA vs oven length issue, suggest posting your question there. As for that someone's opinion, he/she is entitled to it. Then again how did that someone determine this level of "insufficient"?
Electronics Forum | Mon Nov 15 18:51:46 EST 2004 | grayman
I would highly recomend an 8 zones (top and bottom heaters) oven as it has better flexibility than 7 zones. However, I would also would like to check for the heated length. Some oven has many zones but the heated length is small. Arman
Electronics Forum | Tue Oct 30 16:05:23 EDT 2007 | dphilbrick
Wayne I am curious what your heated length is on your oven.
