Electronics Forum | Wed May 10 15:36:36 EDT 2000 | C.K.
I agree with you PR!! At our factory, we had trouble with 0603's!!!! Especially if you try to glue and wave them...manufacturing management, in turn, blamed the declining yields on the processes, and NOT on the product! ...and with process windows
Electronics Forum | Fri May 12 16:17:30 EDT 2000 | Greenman
Yeah, 0201's are real buggers to deal with, as the components are about the same dimensions as the PWB tolerances. Probably a good start is the paper I did with Plexus Corp., available on www.plexus.com, under the "In the News" heading. Headlines: -
Electronics Forum | Mon May 22 10:43:05 EDT 2000 | TMV
The SMT LAB at Universal Instruments Corp. has presented a paper entitled "Process parameters optimization for mass reflow of 02\01 components" at APEX 2000. If you weren't able to attend, an excerpt is available at www.UIC.com, under the AUTOMATION
Electronics Forum | Wed May 31 17:37:29 EDT 2000 | Arturo
I�m also having this problem with Panasonic film capacitor. Even when I have the correct pad size according to Panasonic data sheet the tombstoning occur. I am thinking that the problem could be the plating of the film capacitor. The only way I could
Electronics Forum | Wed May 31 23:19:15 EDT 2000 | Jackie Hsieh
I think the reasons of the tombstone phenomenon could be concluded as follows: 1.The proper pad size,including the dimension of two pads,the gap of two pads. 2.The temperature distribution must be uniform (take care the shadow-effect) 3.The ramp-up s
Electronics Forum | Wed May 10 01:00:09 EDT 2000 | gary
0.65mm pitch QFP. I believe that this is the borderline for Fine Pitch. Will I have a good paste release with Chem-etch matched with a rubber squeegee? I'm planning of a 15% reduction on the Width and no reduction on the length. Any feedback whether
Electronics Forum | Wed May 17 17:21:18 EDT 2000 | Michael Parker
Paul- Start with apples to apples comparison. What world class product are you building that would benefit from a benchmark comparison? Other than that, if you are just starting then crunch the numbers, find the highest values, do continuous improvem
Electronics Forum | Thu May 11 15:07:42 EDT 2000 | Finepitch Services
I assume your oven has a "board width" setting for every board and the conveyor width is automatically adjusted as soon as you select the profile/recipe... For the double sided reflow boards, I would set the width 1 inch (or another rounded amount)
Electronics Forum | Tue May 16 18:50:23 EDT 2000 | Michael Parker
Boca- I can enlighten you on the dental floss thing, but first you must provide a $40 bill to satisfy the insatiable Humm sisters. Beyond that, you gotta raise some bees, grab some trusty zircon encrusted tweezers (any self respecting SMTer would onl
Electronics Forum | Tue May 16 20:36:11 EDT 2000 | Dave F
D: I�d say you�re correct about dross cleaning the sinuses, but it really get�s ya dizzy up over the long term and then it makes ya slobber. The dental floss thing is just a lyrical thing from a wasted youtt (as Danny Devito said in "My Cousin Vinn
