Electronics Forum | Mon Aug 01 06:59:02 EDT 2005 | Joseph
Dear all, We observed visible micro crack at top side of solder fillet during lead free wave solder process. We did not see any visible micro crack at bottom side, and it always located at joints of transformer. Any input be much appreciated. Best
Electronics Forum | Wed Aug 03 21:29:59 EDT 2005 | Ken
Yes, lead can promote fillet lift. In order to understand this defect you must begin looking at your lead frame mateials. some lead frames are more susceptable to this disorder. This is most likely a cte mismatch disorder. Lead contamination in
Electronics Forum | Wed Aug 10 13:31:05 EDT 2005 | patrickbruneel
Joseph, In addition to my previous post The reason why the cracks are most visible at the transformer location is due to the weight of the transformer. The stress on the boards is the highest because the weight of the transformer will warp the board
Electronics Forum | Tue Aug 02 07:43:11 EDT 2005 | aj
All, I might be going over old ground here but I would like to get some idea as to when people are planning to switch over to a Leadfree Process. I know they say July 2006 but surely we should be switching over a couple of months before this? any
Electronics Forum | Tue Aug 02 16:56:35 EDT 2005 | AndyB
AJ, The important thing to remember is that any product sold after this date must be lead-free. If your product is sold within weeks of manufacture, then you can wait until the last minute. If your product may sit for several months before being purc
Electronics Forum | Tue Aug 02 15:05:49 EDT 2005 | OverTheHill
I have a large (25" width x 14" length) PCB that's getting ready for production. Our current paste printing equipment will not handle this size board. Does anyone out there know of a semi-auto paste printing or paste dispensing machine that can handl
Electronics Forum | Mon Aug 08 08:50:32 EDT 2005 | pjc
MPM SPM semi-automatic printer can handle up to 26.5" x 21" max. PCB MPM UF3000 automatic, up to 27" x 20" MPM AccuFlex automatic, up to 23" x 20" For more info: http://www.speedlinetech.com/mpm/index.aspx
Electronics Forum | Wed Aug 03 08:32:33 EDT 2005 | ???
Any and all equipment i have ever seen (or worked on) oversea's...and that includes most 3rd world countries including china..... they dont know what preventive maintenence is (or every day maintenence).......So anyone buying equipment from oversea's
Electronics Forum | Wed Aug 03 13:34:10 EDT 2005 | Stefan
Thank you for the advise. It was not a Fuji machine. I sold quite a few pieces to this dealer, assuming that I would get the same kind of quality in return. I don't like to badmouth anybody particular not an entire country. However, the particular de
Electronics Forum | Wed Aug 03 14:48:19 EDT 2005 | cyber_wolf
Mike, Lets say I am a U.S. based company, and I wanted your organization to "assess" a machine in Malaysia. Could you give us folks a ball park figure of what that might cost ? Doesn't have to be exact....Just a ball park figure........
