Electronics Forum | Thu Apr 13 18:41:20 EDT 2000 | Michael Parker
I too have followed all of the useful suggestions provided herein. I still found some tombstoning which was specific to a manufacturers lot. I changed the reel to another brand and the problem went away. I suspect contamination or oxidation on the co
Electronics Forum | Tue Sep 14 13:27:57 EDT 1999 | Scott S. Snider
| Can anyone out there pls enlighten me on how to solve chip tombstone defects. | I am running a board with a lot of 0603 chip. i had fine the profile and the alignment, but it still happen randomly on the board itself. Is there any other way to sol
Electronics Forum | Thu Jan 13 11:52:17 EST 2000 | Christopher Lampron
Jim, Yes this does keep on coming up in the forum as JAX states. There is a pluther of information in the archives. I have had some problems with 0603's in the past. If it is possible, try using a 2% silver SN62 solder paste. This helped me in many s
Electronics Forum | Tue Sep 14 10:54:37 EDT 1999 | Scott Davies
| Can anyone out there pls enlighten me on how to solve chip tombstone defects. | I am running a board with a lot of 0603 chip. i had fine the profile and the alignment, but it still happen randomly on the board itself. Is there any other way to sol
Electronics Forum | Mon Aug 28 17:54:59 EDT 2000 | Steve Thomas
We're trying out 0603 packages on some 0805 footprints (at this stage only on some test boards) since our vendor tells us the 0805's are going to be getting harder to get, and more expensive to pay for. I understand the IPC footprint for the two is
Electronics Forum | Wed May 21 12:55:35 EDT 2003 | Zhenya
Several things for your reference: 1. Starting with data collection: - Have you done a measle chart to illustrate the pattern of the defect? - Have you checked the corelation between shift/time and defects rate? - How about a pareto chart? - Do
Electronics Forum | Thu Dec 30 23:25:49 EST 1999 | Henry C. Yao
We're using 96.5/3.5 high temp solder paste for our production and we're encountering soldering defects particularly non wetting (tombstoning). A technical document I read mentioned that there is a sort of a problem with the wettability of this paste
Electronics Forum | Sat Jan 06 10:52:09 EST 2001 | Steve Thomas
I don't know the specs. of our MSHII's, as I'm sort of detached from that part of the process, but supposedly they are capable. Panasonic also recommends we buy all new feeders (well, big surprise there), because of the risks involved with retrofitti
Electronics Forum | Mon Jan 08 17:46:38 EST 2001 | Mark Krmpotich
Panasonics are good machines as long as you do the proper and timely PM's they recommend. Plus with my past history and from others that I here, their feeders are some of their biggest down fall. That's typically why they have to introduce new style
Electronics Forum | Fri Dec 07 15:23:27 EST 2001 | davef
I'm with Brian. TIN COATED 0603 FAILURES Welcome to the lead-free generation. ;-) The Eurolanders are so blanking stupid, it just makes my head hurt. But then again, it doesn�t take much. OK, enough pontification. Your profile is setup incorrec
