Electronics Forum | Sat Jan 08 06:46:33 EST 2022 | jineshjpr
Hi anyone knows what is the minimum copper foil thickness available across the industries to make PCB surface. Intention is to achieve 23 microns of finished copper thickness in a 0.3mm thickness PCB. Ideally if 3 microns plates are available, additi
Electronics Forum | Wed Apr 24 21:33:02 EDT 2019 | pcbindex1
With the upcoming of the traditional peak season(Q3), a rising price among the mainland factories, and a continual rise in the bronze price in the London Metal Exchange in August, there is also a trend for the rise in the quotation of the PCB’s upstr
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 | Sun Jan 09 20:44:10 EST 2022 | davef
Most boards are fabricated with 1-ounce copper [34.79µm (micron/micrometer)]. Foil more commonly comes in at 33µm or less. Processing reduces this down to 30µm or thinner. Talk to your board fab about the specifics of your application
Electronics Forum | Wed Jul 22 06:58:50 EDT 2015 | migliore
Hi, I got the answer from edaboard.com A standard 6-layer stack is using 2 cores. Manufacturing steps for standard 6-layer are: 1. Etch both (double side) core substrates 2. Assemble, press and cure the complete stack: - copper foil - prepr
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 | Tue Jan 26 12:25:44 EST 2010 | blnorman
You can try a 5% solution of sulfuric acid. It's used to clean copper foils to IPC-TM-650 method 2.3.15 prior to testing for purity.
Electronics Forum | Tue Jul 22 03:56:24 EDT 2003 | A.G.
Are there existing acceptability dedicated criteria for ALIVH bare boards? (Equivalent to IPC-A-600) In particular, how can we assess copper foil cracking after thermal stress?
Electronics Forum | Sat Sep 29 04:55:49 EDT 2018 | sanneyyu
for pattern position with +/-2mil tolerance, pattern width may minus 0.5mil max with the traditional auto exposure.etching tolerance determined by the base copper foil.
Electronics Forum | Wed Oct 18 07:51:14 EDT 2006 | davef
Look here: http://www.circuittechctr.com/ As a low cost approach, use copper foil purchased from a stained glass window hobbyist shop. Cut foil pieces to size with a sharp knife. Epoxy the pieces in place of the damaged pads. Tin and then solder th
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