Electronics Forum | Fri May 29 23:19:46 EDT 2009 | isd_jwendell
I too have heard of the ESD problem when using aerosol spray conformal coating, but I haven't found any documentation. I have been spraying SR conformal coating for ~ 10,000 boards with no failures due to the coating. The person spraying is grounded
Electronics Forum | Wed Jun 13 14:48:48 EDT 2007 | rgduval
Is there a sort of standard method to prevent part loss in reflow? I've had a couple of situations come up recently where we've lost some parts during second-side processing. We're running an Heller 1800, with a mesh belt. Most items process fine,
Electronics Forum | Mon Jan 10 18:22:43 EST 2011 | eadthem
What we use for boards the engineers made to big is aluminum flat bar 1/8 to 1/16 thick about 1 inch wide. we fold it in 1/2 so it fits snuggly on the pcb and just press it on the ends before reflow. id assume the same thing would work on wave but
Electronics Forum | Wed Sep 01 14:31:22 EDT 1999 | Dave F
| To aid in heat dissipation of our PCB, we would like to try having copper fill areas on the board that are hot air levelled and not covered with solder resist. Then, when the board is reflowed, solder paste would be applied and then solder. Has any
Electronics Forum | Wed Nov 20 16:40:32 EST 2002 | csimfgeng
Sign makers utilize a material called "Scotch-Cal" and "Scotch-Brite" in making decals used in outdoor environments. Material similar to this comes in metallic silver and gold. Pieces of this can be economically die-cut and affixed to your PC Board
Electronics Forum | Wed Jul 31 17:57:11 EDT 2002 | davef
Foam fluxer, ouch!! That hurts. How about this? * Make a sheet metal box to cover your preheaters. [If your boss is really cheap, make a 'box' with 1/2" chicken wire and cover it with aluminum foil.] * Prebake the blank out of the boards, bag the
Electronics Forum | Sat Aug 27 12:45:44 EDT 2005 | Mark
Thanks for the replies. Interesting white paper. Didn't quite answer my concerns but still a good read. I was actually surprised that to test temperature uniformity across the zone, they attached T/C's to the substrate rather than measure the ai
Electronics Forum | Tue Feb 19 10:28:54 EST 2019 | emeto
Thank you Steve! I added couple of pictures from experimental board.
Electronics Forum | Fri Jul 16 17:39:33 EDT 2010 | deanm
It is a PCB design issue where the copper patterns are not balanced among the layers. Baking the boards in order to correct the warpage will not improve it. We've had a problem with one bare board in particular warping the same way from two differen
Electronics Forum | Thu Jan 14 04:46:03 EST 2016 | saimen
Hi There , Glad to contact with you , Here is Saimen in Tianweisheng , wish we will have a good cooperation in the furture if we have the honor . Our company is one of the largest custom-made PCB manufacturer in China. We can OEM,ODM,EMS single side
