Electronics Forum: flux ipa (Page 9 of 12)

Leaded and Lead-Free Wave Parameters

Electronics Forum | Wed May 21 13:59:19 EDT 2008 | pjc

Here's what I've seen for no-clean flux applications: Leaded: Dwell Time is? 2 - 3 seconds Top side board temp max? If some small SMT parts reflow are we too hot? 110 to 120C top side board temp just before hitting the wave(s) Pot temp. 245C Lea

Coating adhesion problems

Electronics Forum | Tue Sep 21 16:09:08 EDT 2004 | davef

Q1: What is "enough surface free energy"? A1: Look here for background: http://www.azom.com/details.asp?ArticleID=1575 Q2: How do I determine surface free energy? A2: We look at it a relative term. For instance, a semi matte finish on solder mask

Re: Clean before conformal coating?

Electronics Forum | Fri Jan 05 12:01:26 EST 2001 | Jim M

I've been involved with no-clean flux and conformal coat in the past.It has been my experience that the amount of no-clean flux used is proportionate to how well the conformal coat adheres to the boards.No clean paste did not affect adhesion. The co

Re: white dirty solder

Electronics Forum | Fri Jan 16 23:46:38 EST 1998 | Scott

| I have a problem! The solder on my pc boards look great comeing out | of my reflow oven. They go thrue the rest of the prossese | and at the end at the qc station it's cold or whitish or gray not shiny. | does any one have a idea on how to correct

Cleaning Water Soluble Flux After Touch-up

Electronics Forum | Thu Aug 26 16:48:37 EDT 2004 | davef

You're correct. Operators shouldn't be doing "touch-up". [No value added] Take that as your clue for areas to improve process. Babbling about touchup: * Left to itself, touchup feeds on itself, operators are parinoid that inspectors will "ding" th

Manual Stencil Cleaning Solvent

Electronics Forum | Mon Oct 10 16:02:58 EDT 2005 | pjc

If you don't have a machine, such as from these guys: http://www.pressureproducts.com/SPPC_Hm.htm http://www.smartsonic.com/index2.html http://www.aqueoustech.com/Ultrasonic_Series_Data.htm http://www.emcgti.com/products/product_list.php?cat=8&ca

Necessity of ROSE in commercial quality processes

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

Batch cleaner not getting PCBs clean and dry

Electronics Forum | Thu Dec 08 12:39:39 EST 2016 | deanm

We have a name brand aqueous batch cleaner that uses a chemical and DI water to clean ROL0 flux from our PCBs. It does ok most of the time for SMT boards and we want to include through hole assemblies as well which should be a better cleaning process

IPA versus Stencil Cleaning Solution

Electronics Forum | Wed Jun 14 14:23:29 EDT 2017 | emeto

Sr. Tech, Just think about it. How do you clean your stencil after you finish the job? Dry wipe and put it on the shelf? Dry wipe will work to some extent for simple boards, but your stencil will never be perfectly clean like if you use solvent. You

IPA versus Stencil Cleaning Solution

Electronics Forum | Thu Jun 15 06:58:54 EDT 2017 | cyber_wolf

Hmmm.... When I clean my stencils after I run a job, it is to clean the paste off the stencil so it doesn't dry out in the apertures and on the stencil surface while it is being stored. Wiping the stencils during production is to clear the paste of

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