Electronics Forum | Tue Oct 27 13:56:36 EDT 2009 | julie331975
I work for a CEM. We are having some quality issues with some pcb's that came from China. (I know, big surprise) Can anyone with pcb manufacturing experience look at some pictures I have and give me an opinion as to what could go wrong in the pcb man
Electronics Forum | Fri Aug 18 03:34:20 EDT 2006 | ridzal
i want to know about some basic details of materials in pcb such as CEM, FR1, FR2, FR3 and XPC.The use, advantages and also disadvantages
Electronics Forum | Tue Nov 03 00:49:10 EST 2009 | dcell_1t
Davef, you really make me laugh!!! pretty funny sarcastic way to represent the typical supplier response... If we could have a "The things (Top 10) that you will hear about your PCB supplier"
Electronics Forum | Fri Aug 18 07:40:32 EDT 2006 | davef
There's a fair amount on the web about this. For instance: http://www.felsweb.com/lam_faq.htm
Electronics Forum | Wed Oct 28 04:02:10 EDT 2009 | lococost
solderresist has a big offset?
Electronics Forum | Tue Nov 03 23:00:58 EST 2009 | davef
Thank you, Manuel
Electronics Forum | Tue Nov 03 06:23:12 EST 2009 | josh_brubaker
Has anyone ever done a tape test to see if the solder resist pulls away from the PCB? Is this an acceptable method for testing solder resist acceptability? This is an issue I am experiencing with our PCBs. I am receiving boards with excess solder o
Electronics Forum | Sun Nov 01 01:33:52 EST 2009 | isd_jwendell
Just my opinion: Top pic - Solder mask registration WAY too far off, without a doubt I would reject. Bottom pic - I would worry that there was/is a contamination that caused the poor looking mask. This may be cosmetic only, but unknown. I would rej
Electronics Forum | Wed Oct 28 09:28:02 EDT 2009 | spitkis2
I agree with you. Personally, I would either return them and look for a new supplier or scrap these boards. Unless your customer provided these boards and gave you the go ahead to populate them, they will not be too pleased about the build.
Electronics Forum | Fri Oct 30 10:36:26 EDT 2009 | richie_puthotta
Hi, I see a huge solder mask shift on chip comp pads. This would result in mid-chip solder balls or solder beads. Overall, the solder mask workmanship is not acceptable. Mask is on pad.
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