Electronics Forum | Tue Aug 25 11:31:41 EDT 2020 | stephendo
yes Once I was using dewers of liquid N2 and recommended switching. I tried using air to the machine so the sensor would let the machine run. Boards went from good to a two inch icicle covering a large area. We went to a wall mounted single stage fi
Electronics Forum | Wed Aug 26 20:52:15 EDT 2020 | stephendo
One thing about liquid N2 is while it is safe, only let trained personnel near it. I believe if someone got their hand frozen on the side, it is not coming off until the dewer is completely empty and warmed up. And make sure management understands
Electronics Forum | Fri Jun 12 07:50:18 EDT 2009 | davef
Advanced Coating; 10723 Edison Ct, Rancho Cucamonga, CA 91730; 800-722-1444 F909-481-1427 info@advancedcoating.com advancedcoating.com C-C Technologies Inc; 761 Blossom Hill Ln, Dallastown, PA 17313; 717-577-6559 F717-246-6882 Electronic Coating T
Electronics Forum | Wed Feb 10 08:10:26 EST 2010 | davef
Here is a posting by P Kinner at Humiseal ... Typically, there are three main approaches to avoid coating wicking into press-fit connectors (and other keep out areas). Wicking is a phenomenon caused by a combination of low viscosity of conformal coa
Electronics Forum | Fri Apr 12 17:22:47 EDT 2002 | davef
First, splitting hairs on parlance. * Conformal Coating. A thin electrically nonconductive protective coating that conforms to the configuration of the covered assembly to provide environmental and mechanical protection. * Solder Mask. Coating mate
Electronics Forum | Fri May 26 04:58:19 EDT 2023 | auriga2001
I agree with the two other replies. Left alone, it is a defect. If it's just excess adhesive or coating, you can use IPC-7711/7721 'Rework, Modification and Repair of Electronic Assemblies' for guidance on removing. Section 2.3.1 explains how to te
Electronics Forum | Wed Apr 19 11:50:05 EDT 2006 | amol_kane
Hi BJ, Everyone's favourite answer...it depends! If the volume if large, masking boots will save you both, time and money in the long run. Custom boots are relatively expensive to buy, but they pay themselves over time by savings on masking tape. ma
Electronics Forum | Mon Mar 03 17:42:35 EST 2008 | tonyamenson
I stripped the entire board because I had to have the boards troubleshot. Had a high failure rate from the field. The board coating was applied about 5 months ago. I was told by my people anything past 3 days and you will need this type of stripper
Electronics Forum | Thu Jul 25 21:49:55 EDT 2002 | davef
Consider: * Quitting the coating business all together and using a coating service supplier, like: Thermospray Co 800-952-5838 Mike Moninger; Advanced Coating 800-722-1444; Epsco 108 W. 37th St Boise Idaho 83714 (208)389-2000 * Buying a programmable
Electronics Forum | Fri May 14 11:17:42 EDT 2004 | Ashok Dhawan
I am having coating adhesion problem with flex circuits. The cover plate material is KAPTON or Poly imide. The conformal coating material used is humiseal 2A64. The boards are cleaned, measuring less than 4 microgram Nacl per sq in. against acceptabl
