Electronics Forum | Thu Aug 21 12:06:17 EDT 2008 | pms
Thanks for your replies. The problems do not appear on the complete lot of PCB's. I don't know the percentage at this point. I agree. It also appears to me that these PCB's are over-etched. The PCB rep say's "Yea, there's a few boards that have
Electronics Forum | Sun Dec 17 22:55:45 EST 2006 | foolat
I'd like to know how much capacitor offset from the pad should be acceptable? What are the risks of the placement offset if greater than the acceptable level? I'm still quite new to this so any help will be very much appreciated. Thanks
Electronics Forum | Tue Mar 25 11:43:48 EDT 2014 | sara_pcb
It is Solder Mask on Bare copper, The land finish is HASL as per MIL-PRF-55110G which accepts trace of HASL as acceptable. Wetting is acceptable. regards, R.Saravanan
Electronics Forum | Wed May 23 10:11:43 EDT 2012 | blnorman
Simple answer is no, there is no universally acknowledged acceptance criteria. Some time ago, I started a spreadsheet with the acceptance levels suggested by various labs on the individual ionic species. All are relatively close in their individual
Electronics Forum | Wed Mar 03 14:16:59 EST 2010 | davef
First, we expect that your equipment supplier would help you with this. Then again with lots of used equipment flying around, some of the basic stuff often gets pushed to the back of the bus. Second, here is a clip and paste on the basics of equipm
Electronics Forum | Thu Feb 10 11:40:25 EST 2005 | Carol
Hello All, Can somebody direct me to a facility or school or even a business that can offer an x-ray course for Class 3 electronic circuit board population interpretation, as in BGA ball acceptance, connector solderability fill acceptance etc.? Some
Electronics Forum | Thu Nov 16 18:19:10 EST 2000 | Dave F
We want to improve our process for accepting SMT solder paste stencils received from suppliers. Our process: * E-mail CAD aperatures to supplier with "readme" giving specific fabrication instructions to the supplier. * Receive stencil from the suppl
Electronics Forum | Wed Aug 04 16:37:56 EDT 1999 | Doug
| Hello Netters, | | Can anyone provide me with info or where to get info on acceptability of solder beads and solder balls? | | Thanks for any help | | Tom B. | | Tom, The IPC sets the standards for acceptability. But in a nutshell if the ball i
Electronics Forum | Wed Dec 07 00:43:13 EST 2005 | ajay
Hello All, Do any acceptable criteria is followed on DPM for SMD soldering joint / defect. We do face tough time with QA, as they demand 100%. Our SMD board is having about 2000 soldering point & even 99.90% ok (1998 points ok out of 2000) QA do not
Electronics Forum | Fri Dec 09 13:32:14 EST 2005 | jbrower
Hi Ajay, Does your company currently use any quality standards or is it made up as one goes by the QA department? You might find that using IPC 610A Acceptability of Electronic Assemblies very usefull. This manual is our base line for acceptable or
