Electronics Forum | Thu May 30 11:21:08 EDT 2019 | slthomas
100% visual inspection. If we test, then we retest (assuming this is a completed board). Also, if there is an accelerometer on board, we argue about whether or not we should replace it by default.
Electronics Forum | Fri Jun 05 15:06:26 EDT 1998 | Dave F
| I have just been assigned to look into the ionic chromotograhy test on our PCBA but I have zero knowledge. Could anyone help to explain what is this test about? Is it | a) a destructive test? | b) What is the measurement unit of this test? | c) Wh
Electronics Forum | Wed Dec 26 11:01:31 EST 2007 | swag
Thanks, rywman. I do have a solder sample along with dummy BGA's so we should have what we need. This BGA is actually 1152 pins (I didn't have that right in my original post). The bad part is that we are building only one board only and the actua
Electronics Forum | Tue Aug 26 17:50:52 EDT 2014 | dkrawchuk
Hi, We have some boards that we apply an underfill to a BGA. Some boards have underfill that covered the surrounding passives. The customer is concerned that the different expansion rates will damage the passives. Does anyone know of a company th
Electronics Forum | Tue Mar 13 04:43:57 EDT 2007 | tanemmirt
thanks a lot robqd3 and davef for your assistance,just a littel question concerning testing soldering joints, is it enough to ask the producer to test all my soldring joints without modifying any thing in the ciruit (( adding vias etc...)) if i ha
Electronics Forum | Tue Mar 13 07:39:19 EDT 2007 | tanemmirt
thanks a lot robqd3 and davef for your assistance,just a littel question concerning testing soldering joints, is it enough to ask the producer to test all my soldring joints without modifying any thing in the ciruit (( adding vias etc...)) if i have
Electronics Forum | Fri Aug 22 09:44:45 EDT 2003 | davef
Kenny: Since you need to use water soluable flux and can't use no-clean, consider asking your board fabricator to plug the via.
Electronics Forum | Mon Jan 31 11:34:58 EST 2005 | Chunks
Testing vias may be acceptable, but not preferred. If you do test by via, it�s a last resort type of thing. Vias are always a pain in the real world. Generally, they are soldered by wave, so they aren�t always doomed correctly, plus residue build-
Electronics Forum | Fri Nov 02 12:51:29 EDT 2007 | adtech
Is your data scewed in any fashion? If not the board is fine. If the cosmetics are an issue, write a procedure to have them changed out based on the criteria you choose (testing results, cosmetics etc.). This will be essential if your company is ISO
Electronics Forum | Sun Jun 07 19:09:21 EDT 1998 | Graham Naisbitt
Chiakl Ion Chromatography has been perfectly described by Dave, but here are a couple of extra considerations: Ion Chromatography will tell you precisely what is present on the surface of your board/assembly but it will not tell you whether it will b
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