Electronics Forum | Fri Jan 23 13:26:34 EST 2009 | bwet
Dear SMTers: We are looking for a supplier of 1 oz copper sheets, tin coated on one side and black oxide coated on the other? Ideas? BWET
Electronics Forum | Sat Jan 30 21:46:49 EST 1999 | Kallol Chakraborty
etch->strip what would be the etch loss then? Please Help.
Electronics Forum | Tue Apr 23 15:18:02 EDT 2013 | davef
2 oz copper should be 2 oz per ft^2 thick. There is no relationship between thickness and copper weight due to the effect of processing. Since this is a painful way of thinking about things, ppl have reached a compromise and talk about 'nominal thick
Electronics Forum | Mon Apr 22 17:13:48 EDT 2013 | hegemon
Might want to double check my figures, but my notes have 2oz copper at 2.8 mils or 71.12 microns in thickness. 'hege
Electronics Forum | Mon Apr 22 16:31:53 EDT 2013 | anvil1021
So, I was wondering how thick 2 oz. Copper is supposed to be? I have heard 60 microns and 70 microns, but the PCBs that we have that are supposed to be 2oz Copper are 68.5 microns, the Customer would like at least 60 microns, but what is the reality
Electronics Forum | Tue Apr 23 15:35:45 EDT 2013 | dyoungquist
Check out IPC-A-600. Revision G (July 2004) section 3.2.3 (surface) and section 3.2.4 (internal) give min/max thicknesses for various weight copper. The min also changes depending on what class (1-3) standard you are working to.
Electronics Forum | Wed Dec 03 16:39:49 EST 2008 | bandjwet
Hi All: Does anyone know how to specify or buy 1oz copper foil in a sheet format? Thanks BWET
Electronics Forum | Thu Jan 04 12:51:37 EST 2007 | Board House
Hi Chunks, Starting copper on outer layer with .0007 is 1/2 oz. copper foil. so if starting copper is .0007 and your Board house will plate an additional .0021 mils of copper. which will give you a finished copper weight of .0028 Mils or (2 oz.) Y
Electronics Forum | Thu Jan 04 08:33:08 EST 2007 | davef
You cannot determine foil thickness from its weight per area, because of the significant variation in the density of electrodeposited [ED] copper. But people don't care. They do it regardless. (oz/ft2)||(mils)||(mm) 1/2||0.7||17.8 1||1.4||35.6 2||2
Electronics Forum | Thu May 29 14:27:04 EDT 2003 | larryk
This flex is .001" Kapton polyimide. The flex portion of this rigid flex consists of 3 layers of 1 oz copper with 5 layers of Kapton. Part of the flex is sandwiched in standard FR4 with two layer of copper on each side for a finished thickness of .
