Electronics Forum | Sun Aug 30 17:31:15 EDT 2020 | kylehunter
Hi all, (I posted on eevblog also, figured I'd try hear as well since this seems like a semi "niche" question) I need some advice on PCB cleaning. Up to this point, our assembly line has strictly run NC paste, with all SMT parts. We never washed an
Electronics Forum | Wed Sep 05 17:37:56 EDT 2001 | seand
Hello Jeff, If you have components on your board be careful of how low the frequency is that you will be applying to your board. Ultrasonics are great for cleaning stencils and bare boards at around 40kHz. These frequencies (and Lower)may however
Electronics Forum | Thu Jun 15 21:51:17 EDT 2000 | Dave F
Jeff: You're correct �7.1.3 of ANSI J-STD-001C states " Drying / Degreasing states the assembly may be treated to remove moisture and other volitiles." We don't bake "FR4" for love nor money. The archive are littered with threads along this line.
Electronics Forum | Mon Feb 19 13:31:25 EST 2001 | billschreiber
Hello Mark, EPA Certification can be a tremendous help to the user that is evaluating new cleaning processes. Let�s face it, if it wasn�t for the Earth�s ozone layer, everyone would still be using CFCs and a vapor degreaser to clean stencils, PCBs
Electronics Forum | Tue Apr 17 09:38:04 EDT 2001 | CAL
With some help from our good Friends at Agilent Technologies our RF Lab includes testing up to 100GHz. Equipment includes Vector network analyzer, signal analyzer, dual channel power meter, noise filter meter, advanced impedance analyzer (including
Electronics Forum | Thu Jul 22 16:36:06 EDT 1999 | Mike Konrad
Scott is right, Alpha' 2110 is a good saponifier (be careful though as it can dull your leads). Saponifiers in general are better if used in an aggressive spray-in-air system. Low agitation immersion systems (heated baths or refurbished vapor degre
Electronics Forum | Fri Jun 18 20:09:52 EDT 1999 | Dean
| Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems. | yes, 8 years ago I developed
Electronics Forum | Thu Sep 06 10:55:37 EDT 2001 | davef
saturation occurs at ppm levels. Remember, IPA is extremely flammable and its bulk use makes the plant liable to all sorts of quite repressive safety rules/regulations and so on. Ignoring these rules exposes the owner to fines and possible plant cl
Electronics Forum | Thu May 23 22:17:47 EDT 2002 | davef
Not intending to undercut Mike's offer, but to compliment it. Consider asking Heraeus for guidance about cleaning the residues from reflowing your paste. Some NC flux res: * Cannot be cleaned. * Can be cleaned after a relatively short period of tim
Electronics Forum | Wed Mar 24 21:51:23 EST 2004 | davef
Dreamy It sounds like you are having fun in your new job. Saponifier. Alkaline chemicals, added to water, that convert rosin/resin flux residues in the water to soluble soaps. Generally, saponifiers are better if used in an aggressive spray-in-ai
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