Electronics Forum | Thu Jul 20 22:02:47 EDT 2006 | CKH
Hi Folk, i am wondering why they are Missing ELCap and ELCap being totally shifted out of the PCB Copper Pad during the SMT Reflow. Recently we have encountered some boards with the above mentioned symptoms. Appreciate if anyone could advise me. Th
Electronics Forum | Mon Feb 01 17:30:00 EST 2010 | smt_guy
can anyone share how copper is being cleaned a a PCB Fab House prior to applying HASL? thanks
Electronics Forum | Tue May 30 09:27:08 EDT 2000 | PhilB
More and more PCB fabs are switching from chemical copper to what is called a "black hole" process from McDermitt.In this process a very thin layer of carbon is put on the base material instead of chemical copper. Can anyone tell me about the advanta
Electronics Forum | Tue Nov 13 10:29:55 EST 2012 | 15009
I am looking for opinions on how much larger soldermask pads should be versus the copper. I am aware that some pcb manufacturers can hold tighter tolerances than others but is there an IPC recommendation? Some shops we deal with can hold .002 per sid
Electronics Forum | Sat Sep 20 11:44:39 EDT 2003 | Gabriele
Few questions: - wich type of C-CGA ? (CAST or CLASP column to ceramic attach) - column pitch ? - column count ? - capped (with lid) ? or capless (c4 die on top)? - PCB board zize and thickness ? - PCB copper finisch ? (OSP,HASL, ENIG, etc) - v
Electronics Forum | Thu Oct 06 18:24:33 EDT 2005 | GS
To have symbol embedded in PCB copper it could be an opportunity for error because in case of mountinng on it a non ROHS compliance components/devices, the symbol would not tell the true. Better use the Rohs compliant label, stiked on PCB when sure
Electronics Forum | Mon Aug 30 14:46:56 EDT 2010 | davef
Sure, you should be able to measure the copper oxide thickness on the inner layers of a PCB when doing sections.
Electronics Forum | Thu Apr 02 11:27:49 EST 1998 | Mike c
I am looking for a product to repair PCB mask (seal exposed copper) and fill Gouges in pcbs, any suggestions?
Electronics Forum | Fri Apr 03 08:26:58 EST 1998 | Scott Cook
| I am looking for a product to repair PCB mask (seal exposed copper) and fill Gouges in pcbs, any suggestions? Why not use an electonic grade 5 minute epoxy? As long as it's inert, I'd do it. Scott
Electronics Forum | Sat Apr 04 15:28:36 EST 1998 | Use one of our UV cure conformal coatings
| | | I am looking for a product to repair PCB mask (seal exposed copper) and fill Gouges in pcbs, any suggestions? | Why not use an electonic grade 5 minute epoxy? | As long as it's inert, I'd do it. | Scott
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