Electronics Forum | Sat Mar 31 08:38:45 EST 2001 | davef
Consider having one of those left coast test labs do a bit of ion chromatagraphy testing to help clairify.
Electronics Forum | Fri Mar 30 11:02:58 EST 2001 | slthomas
Surprise, surprise. ;) Wouldn't think of it.... Yep. I'm not as concerned about two flux chemistries mixing and causing a substrate China syndrome as I am about the OA flux retained in voids and subsequently released in a touchup operation. If w
Electronics Forum | Thu Mar 29 22:51:35 EST 2001 | davef
I'm confused. [Swatts nu, eh?] Are you trying to avoid cleaning yer OA? [if so, don't do it. (but you know that)] I assume use OA with yer SMT then wash and then NC with yer PTH and third processes. Reet? Are you concerned about post-wash OA
Electronics Forum | Thu Mar 29 12:25:19 EST 2001 | slthomas
All arguments about using OA pastes on high frequency boards to eliminate alledged RF interference aside, is it acceptable to touch up SMT components on these boards with a no clean flux cored wire after wave solder? All of our wave machines are usi
Electronics Forum | Tue May 31 16:47:51 EDT 2005 | George
Dump the pot and put in the SN100C. Don't mix, too much tin.
Electronics Forum | Tue May 31 22:55:08 EDT 2005 | davef
We think it will make little difference to your customer. It really depends on your customer's end-use environment though. Tough to guess. In a short time, both of pots will be "SAC" though.
Electronics Forum | Sat May 28 06:43:03 EDT 2005 | steve
I have the ability to offer both SAC and SN100C lead free alloys to my customer base. What might occur if a customer is already using SAC305 in their wave and they want to save money and go to SN100C. They now are mixing, tin,silver,copper with tin,c
Electronics Forum | Wed Mar 12 09:33:55 EDT 2014 | neiderman
The grey solder joint appearance in the picture looks to be due to chemistry etching the joints. This can be a common problem with alkaline chemistries running at high concentrations and or alkaline chemistries running in batch machines that require
Electronics Forum | Tue Mar 27 09:41:06 EST 2001 | CAL
Our Stencil cleaner is of the Aqueous Technologies variety (AQ-201sc). Being a research company we change chemistries often. We recently have used Petroferm and Zestron Chemistries. Both Chemistries have met all of our expectations to date. Contact I
Electronics Forum | Fri Dec 03 15:38:13 EST 1999 | DaveH
Jason, Something which has not been addressed in the responses so far is the system which utilizes high volume (flow rate of chemistry over the product), versus high pressure, which indeed has the potential to damage very fine webs on fine pitch sten
