Electronics Forum | Sun Feb 26 21:48:28 EST 2006 | Mike Konrad
Hi GS, Just a clarification� No-clean does NOT equal no ions. It equals less ions (at best). Automatic R.O.S.E (Resistivity Of Solvent Extract) testers are commonly used to detect ionic contamination from no-clean applications. Your comment rega
Electronics Forum | Wed Oct 06 08:41:42 EDT 1999 | Dave F
| | Hi, | | | | Help! Could anyone help to enlighten me on this? | | | | Question: | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z that using a n
Electronics Forum | Sun Jan 20 21:03:34 EST 2002 | peterson
Hello everyone! We just completed some 16-layer boards and noticed (after wave soldering) that there are some unique, white-ish discolorations. It looks as if someone layed their finger at weird angles on the groundplane areas. It is NOT finger prin
Electronics Forum | Thu Apr 10 14:35:18 EDT 2003 | russ
What flux are you using to put them back on? you should be able to adequately clean the site after removal with alcohol or water depending upon the type of flux. "White grungy" usually comes from a liquid flux such as Alpha 857 being squirted on th
Electronics Forum | Wed Mar 24 12:36:26 EST 2004 | wintech
Hello We are using a No-Clean process for a lot of boards that we do, but the customer needs the flux removed off the bottom side of the board and there is to many leaded components that can not go through a water wash, so is what we do is clean th
Electronics Forum | Wed Mar 12 10:04:20 EDT 2014 | globalpowerproducts
We had a SMT specialist come in and go over everything we were doing wrong! We were dipping the boards rather than spraying them, had the pre-heaters set way to low, the conveyor was going too fast, and the actual wave was in the machine the wrong wa
Electronics Forum | Thu Oct 15 16:39:07 EDT 1998 | Dave F
Steve: I thought Kyzen products were "additives" to either aqueous or semiaqueous inline or batch machine cleaning processes. I'm trying to clean the no-clean residue from a few components that can not bear to see water. Can you use Kyzen products
Electronics Forum | Thu Jun 07 08:55:01 EDT 2007 | grics
Well... Some are worse than others... How can you identify that it is caused by uncured mask and not flux residues? The flux is from indium, 3592. Some research in their tech library revealed that either Kyzen or Zestron would work, which is the re
Electronics Forum | Sun Jun 13 05:46:21 EDT 1999 | Brian Ellis
Murray "No-clean" fluxes/pastes should not normally give "white residues". Before exploring cleaning, which is costly for small production levels, I suggest you may care to find out why you have these residues. To help you, can you please answer th
Electronics Forum | Thu Oct 15 13:55:43 EDT 1998 | Steve A
Dave, The first step would be to learn to accept the residue. IPC class 2 has no problem with it. If that is not possible, I am not sure why a no clean is necessary- but I will take your work for it. Alcohols will dry out the residue, and turn it
