Electronics Forum | Wed Feb 26 14:37:57 EST 2003 | russ
Never used U shapes for 0603 but have used them for MELF pkg. Never had a problem printing as long as area ratio is acceptable. So just out of curiosity, why U shape for 0603? Russ
Electronics Forum | Wed Feb 26 15:27:21 EST 2003 | robert valles
Sounds like someone before you was dealing with tombstoning components. We have had greater success with triangular paeratures for 0603 and 0402 footprints. Granted the pad will not be wetted completly but IPC requirements are maintained.
Electronics Forum | Wed Feb 26 19:09:20 EST 2003 | russ
We use itty bitty drill bits in these cases. You can get one from your PCB supplier. Be careful they break easy. Russ
Electronics Forum | Thu Feb 27 15:57:10 EST 2003 | Matt Kehoe
James, Could I get some contact info for you to call you about this? There is a solution for clean BGA's that needs to be discussed one on one versus here in the forum. mkehoe@sipad.net 770-475-4576
Electronics Forum | Mon Mar 10 09:47:31 EST 2003 | davef
James: So, why don't you clean your no-clean? At least then you stand a chance of doing class 2 and class 3 work.
Electronics Forum | Mon Mar 10 16:16:29 EST 2003 | Tim Chistianson
Good note about in Line washers. Can you tell me a little more about the Wave machines, may be what models did you worked on, and what you liked or did not like about them. Thanks, Tim
Electronics Forum | Tue Mar 11 09:44:40 EST 2003 | pjc
Check with your state EPA on disposal of lead contaminated equipment. Or, your local Sanford & Son can handle it.
Electronics Forum | Thu Feb 27 12:03:09 EST 2003 | blnorman
Anybody using Smart Sonic model 6000 stencil cleaner? We're looking to try one out on the production floor, but I figured I'd see if any one was using it and had horror stories or rave reviews.
Electronics Forum | Fri Feb 28 12:08:07 EST 2003 | davef
Paul We don't like to mix metals on press fits. Yano, we do gold on gold or solder on solder, but we don't mix metals [except with imm silver / tin] to avoid electrochemical corrosion. Is that bad information or does AMP think that's not a problem
Electronics Forum | Fri Feb 28 15:10:26 EST 2003 | Pauld
Dave, I raised this concern also. AMP claims that the tight fit in the wipe zone creates an airless joint that will not corrode despite the dissimiliar metals. DDave, thanks for the link.
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