Electronics Forum | Wed Jul 19 12:54:04 EDT 2023 | calebcsmt
Since side fillets are not a requirement for QFNs/BTCs due to some packages not having wettable side terminations, how does one determine if the side terminations are actually solderable/designed for wetting? Is it simply if the side terminations
Electronics Forum | Tue Apr 02 17:56:44 EDT 2024 | mistrthou
You'll need the specific Mydata part. It has some specific dots and square printed on it. It should be in a box with other calibration parts, stuff which we do at least every 6 months. I attached an internet picture of the box that contains the diff
Electronics Forum | Tue May 29 12:35:36 EDT 2001 | genny
Dave, Sorry to drag this out some more. When I saw this thread I realized that we often get PWB's fabricated with a gold plated edge connector tab. However we have not ever given any specs to the fabricator regarding the gold plating - all we say i
Electronics Forum | Fri Jul 10 10:40:13 EDT 1998 | Todd N
Hi all, We are currently having problems with a laser-cut stencil that is electropolished and nickel plated with 9-mil openings. The paste does not release well from the apertures. We are having to wipe after every print. The board is fixtured well a
Electronics Forum | Sat Jul 11 06:56:35 EDT 1998 | Tom Denison
| Hi all, | We are currently having problems with a laser-cut stencil that is | electropolished and nickel plated with 9-mil openings. The paste does | not release well from the apertures. We are having to wipe after every | print. The board is fixtu
Electronics Forum | Sat Jul 11 06:56:03 EDT 1998 | Tom Denison
| Hi all, | We are currently having problems with a laser-cut stencil that is | electropolished and nickel plated with 9-mil openings. The paste does | not release well from the apertures. We are having to wipe after every | print. The board is fixtu
Electronics Forum | Fri Aug 17 11:55:31 EDT 2001 | davef
5uin. Your nickel thickness is fine. Although if you wanted to trade costs, consider giving-up nickel to 150uin thickness, while increasing the gold thickness. Gold over electroless nickel creates brittle joints because of phosphorous in the nicke
Electronics Forum | Thu Oct 11 17:44:30 EDT 2001 | aaelect
OK, OK. 672 ball BGA. The pcbs are PC Card bus size and are .015 thick. There are 3 on a panel with about 1/2" between and rails. The aluminum plates are about 3" by 7". There are 3 cutouts which allow for the parts from either side to protrude du
Electronics Forum | Sat Mar 15 20:24:13 EST 2003 | ramanandkini
Thanks Mr.Dave. Sorry for the delay. One of our major prolems in ENIG plated surface is that wire does not stick. For many years we were getting a bond strength of 14 grams in both ENIG and electroplated surfaces. Now one vendor supplies ENIG boards
Electronics Forum | Sat Mar 21 09:09:40 EDT 2009 | davef
Your puzzlement about blowholes in PTH solder connections during reflow soldering comes from: * Boards are hydroscopic. So, moisture content of the board is uniform. * Gold plating is uniform. * Nickle plating is uniform. * Copper plating on your PTH
