Electronics Forum | Wed Oct 16 01:28:45 EDT 2002 | redmary
during the failure analysis, how to etch the tin,nickle,and copper?
Electronics Forum | Thu Oct 17 23:25:53 EDT 2002 | redmary
We generally etch the copper back slightly using a 50/50 mix of 3% Hydrogen Peroxide and laboratory grade Ammonium Hydroxide. Swab for about 5 seconds, then rinse. and etch the tin in the solder to further delineate the intermetallic layer that shou
Electronics Forum | Wed Oct 16 13:16:11 EDT 2002 | davef
Hey Mar, Sounds serious!!! Poke around Buehler, Leco, or Struers Try IPC TM-650 Test Methods Manual: 2.3.6A Etching, Ammonium Persulfate Method - 7/75 2.3.7A Etching, Ferric Chloride Method - 7/75 188.8.131.52A Cupric Chloride Etching Method - 12/94
Electronics Forum | Wed Jun 09 15:09:29 EDT 2004 | dwoodrow
Does anyone out there use anything besides alcohol in their automatic claw/finger cleaners in their wave solder machines? We are nearing our VOC limit and are looking into other chemicals (VOC-free) for cleaning. Thanks David
Electronics Forum | Wed Jun 09 15:53:09 EDT 2004 | Ordie.
You might want to try Zestron. They make a lot of different cleaners. We use Zestron SD 300 if we clean a stencil by hand. It works great, a lot better than alcohol. Go to http://www.zestron.com. Hope this helps.
Electronics Forum | Thu Dec 09 15:50:14 EST 2004 | grayman
Dave, We are using 2 parts of chemical today 1 for wash and the other 1 for rinse, but this is very expensive and time consuming as we have to make preparations for two chemicals. I believed that there are manufacturers of 1 part chemical use for
Electronics Forum | Tue Oct 09 12:23:07 EDT 2001 | Mike Konrad
Hi Danial, Yes, you can use one cleaning chemistry for all paste types. There are many available chemistries from many manufacturers. The chemistries that I would recommend include: StencilWash Plus from Aqueous Technologies http://www.aqueouste
Electronics Forum | Wed Dec 05 17:48:58 EST 2001 | Mike Konrad
There are a few good de-fluxing chemicals and many more �not-so-good� de-fluxing chemicals. As a manufacturer of cleaning equipment, it is imperative that our customers use a de-fluxing chemical that: #1: Removes flux #2: Is environmentally safe
Electronics Forum | Wed Dec 22 22:43:16 EST 2004 | davef
Try: * Ito America * Hitachi Chemical * 3M * Sony Chemicals
Electronics Forum | Wed Nov 09 07:22:28 EST 2005 | davef
No. Aqueous Technologies, Kyzen, Petroferm, Zestron, Alpha Metals and many more companies have tested their chemical for use with many different production materials and should be able to discuss the effectiveness of their chemical. Beyond that, ma