Electronics Forum | Wed Aug 14 13:54:54 EDT 2002 | DenM
Larry, You can try one of two approaches, a bake above 100C will drive off moisture or use a vacuum bake. The vacuum bake process is slow since there is less/no air to conduct the heat. In the hybrid industry the standard vacuum bake was 16 hours at
Electronics Forum | Sun Nov 01 23:51:44 EST 2009 | boardhouse
Hi Julie, My opinion is that the top board would not pass IPC, solder mask encroachment on pads. Second board is what we call Orange peel,this can be caused two way's. 1) the solder mask was not tack dried enough prior to imaging which caused artwo
Electronics Forum | Tue Feb 22 17:57:32 EST 2005 | Austinj
Most solder paste has a shelf life of 1 week at room temperature after opened, if resealed at the end of the shift/day. Most shelf lives are 4-6 months at 40F (refridgerated) or 1 month at room temp (unopened/sealed). Recommended stencil life is appr
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
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