Electronics Forum | Wed Apr 06 12:21:14 EDT 2011 | ripper
Hi, I am process engineer in PCBA factory.I have a question about gold plating on BGA.I want to know difference soldering performance between gold plating electrolytic and ENIG.Many thank for any idea.
Electronics Forum | Fri Nov 28 04:46:45 EST 2003 | gregoryyork
Best to establish what type of residue is causing this problem and then stamp it out.Speak with SCOPE Labs who offer PCB extraction followed by IR and IC work. So many problems with porous resist at present and NON ionic materials that you really nee
Electronics Forum | Tue Jul 02 04:12:06 EDT 2019 | directx995
Hello everyone, Here is the question: What is the maximum q offset which can be corrected on polarized component? This question is refereed to Machine/Process Management segment of PCBA. I rly don't get this question, can any1 help? Where should
Electronics Forum | Tue Nov 25 16:26:43 EST 2003 | tdurston
We are trying to establish requirements and process controls for completed, cleaned SMT assemblies. We have problems with our high impedance circuits (100 meg ohms) being affected by residue. Some boards require additional cleaning cycles to remove
Electronics Forum | Tue Dec 02 08:40:27 EST 2003 | Daniel Werkhoven
Dear Tom, As manufacturer of solder chemicals for the electronic industry we know we can help you out with your problem. To go no clean you most only organise that the chemistry that stays behind on yr PCB will not cause any problem during the life o
Electronics Forum | Thu May 17 20:18:46 EDT 2007 | davef
Thoughts are: * Best option is: Ceeris International [P.O. Box 939, Old Lyme, CT 06371-0939; 860-434-8740 F860-434-8742 ceeris.com ceeris@aol.com Charles-Henri Mangin] surveys electronic assemblers and publishes reports tailored to their customers' n
Electronics Forum | Fri May 18 09:03:12 EDT 2007 | gregp
Don't confuse cost of ownership and cost per placement. They are two different entities. Also, it's not enough to say it...it needs to be true. One supplier claims "low cost of ownership" but has equipment that requires $700 placement nozzles. I'
Electronics Forum | Mon Aug 13 09:49:35 EDT 2012 | rjlatz
I just got back from a visit to our PCBA manufacturer. We have good flowthrough on the PTH, but solder skips and bridges on the SMT SO IC's. We have correct orientation and robber pads, but the results are still the same. I noticed the wave shape is
Electronics Forum | Fri Nov 03 15:43:20 EDT 2017 | dleeper
IPA and DI water are both very common and effective methods of cleaning PCBAs. http://www.zestron.com/sa/cleaning-applications/smt-electronic-cleaning/pcba-cleaning/aqueous-cleaning.html http://blog.gotopac.com/2010/11/18/ipa-as-a-universal-cleaner
Electronics Forum | Tue Nov 25 22:25:24 EST 2003 | davef
We had a similar problem on the high impedance front end of a MOSFET amplifier a few years ago. If your situation is like ours, the issue is not what a consensus specification [like J-STD-001] defines as an upper limit, but what your product is defi
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
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