Electronics Forum | Mon Sep 10 17:52:30 EDT 2001 | mparker
Are you doing actual measurements of the dummy parts placements? or are you just doing a visual go/no go check? If doing actual measurements, be sure to use mil inch units of measure rather than mm. Mil will give you more accurate readings. mm force
Electronics Forum | Fri Jun 24 09:32:53 EDT 2011 | kahrpr
Looking at the appearance of pads and solder joint is pretty subjective. Especially lead free people are all over the map on the physical appearance of pads and joints. The true test is solderabilty testing, weather it’s just looking for good wetti
Electronics Forum | Fri Jul 08 16:35:04 EDT 2005 | Jason Fullerton
"Whether or not you need a toe fillet depends on your application. We have high reliability products where we can't use a QFN over a certain size, regardless of toe fillet. We have other applications where we meet the thermal cycle requirements for a
Electronics Forum | Mon Oct 05 07:25:47 EDT 1998 | Dave Batten
| At the next meeting of the IPC Repair committee this coming October, we will be reviewing several jumper wire procedures. Included with these procedures are 37 detailed illustrations covering preferred, acceptable and not recommended wire terminat
Electronics Forum | Wed May 30 18:42:17 EDT 2007 | russ
I have heard this question before. My thoughts are: If it is inline and being used to monitor the assembly line as boards are produced it would be process related either engineering or Quality assurance /control. I do not think it would be process
Electronics Forum | Sat Apr 25 12:58:13 EDT 1998 | Earl Moon
| Is there an industry standard in calculating SMT process | PPM level for benchmarking purpose ? What are the industry | benchmark ppm number for some of the defects like solder | short for 20-mil QFP, tomstone problem for 0603 components etc....
Electronics Forum | Mon Jul 26 11:01:35 EDT 1999 | Kevin Hussey
| Has anyone ever heard of testing solder paste quality by pasting a board and making a determination of the quality by measuring paste height and width after the board is pasted. Would you consider this a valid test for solder paste testing? | I ha
Electronics Forum | Tue Sep 28 06:33:43 EDT 1999 | Earl Moon
| | | | I'm trying to start a small SMT contract shop and I need | | | | assistance in selecting equipment. Quad seems to be the | | | | leader but if there is something else out there that can | | | | better suit me please let me know. My shop star
Electronics Forum | Thu Mar 15 12:20:36 EDT 2018 | brandon44
Don't worry about this. There are lots of PCB suppliers around the web. Just need a little bit of time. Right now i get this one https://www.wellpcb.com/content/quality-assurance.html All of them are good quality and reliable.
Electronics Forum | Wed Oct 20 08:40:48 EDT 2010 | xps
Hi everyone, here a question for the SMT production engineers... is possible today mount the fine pitch and ultrafine pitch devices (BGA, QFP, CSP), without using the local fiducials, but using the three standard fiducials of row card only? The corre
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