Electronics Forum: ipa and di water (Page 1 of 6)

Mixing No-clean and water soluble processes

Electronics Forum | Tue Feb 23 12:56:03 EST 2010 | vleasher

Is there any harm in washing SMT soldered with NoClean paste? The PCA has some large thru-hole connectors that we would prefer to do as water soluble on out selective solder but the SMT consists of LGA's and other low parts that we would not be able


Electronics Forum | Tue Nov 09 11:42:37 EST 1999 | Dave F

Jeff: Try this: ROSA. John�s spot on. I�ll add that it is a fluxless method that reduces the oxides in an aqueous solution. Another source of information is: Trench, M., Hillman, D., Lucey, G., "Environmentally Friendly Closed Loop Soldering,"

Using isopropanol with DI water for rinsing after washing boards

Electronics Forum | Thu Nov 10 10:42:55 EST 2011 | davef

While you're waiting for others to reply, search the fine SMTnet Archives for similar threads. For instance: * Batch cleaners http://www.smtnet.com/Forums/Index.cfm?CFApp=1&Message_ID=49334 * Use of IPA as a cleaning agent http://www.smtnet.com/Foru

Using isopropanol with DI water for rinsing after washing boards

Electronics Forum | Thu Nov 10 10:45:32 EST 2011 | aqueous

The use of IPA in automated defluxing systems is nearly extinct for the following reasons: 1. IPA is flammable. In a spray-in-air environment, the already low flashpoint is even lower. 2. IPA is not a great solvent. There are specific containme

baked on water soluble flux residue betwwen fine pitch comp.

Electronics Forum | Fri Dec 01 14:12:50 EST 2000 | Jim M.

My company currently uses water soluble paste for our SMT process. We were having trouble retaining hot water in our in line, closed loop DI cleaner. The cleaner kept shutting down when the water temp. dropped below 125C. As a result, the conveyor

Re: Ionic testing and No-Clean flux

Electronics Forum | Sat Feb 05 09:08:18 EST 2000 | Dave F

Casimir: Let me expand on something that I said in my response to your thread on ionic testing. Generally, no-clean people don�t use ROSE testing as part of their process control, because the ROSE test is essentially washing your board in DI/IPA �

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

Flux Designations and Composition

Electronics Forum | Mon Jul 12 11:35:27 EDT 2004 | Pierre RICHARD

Here are some answers to my questions after a good research. I also added more definitions that could help understand this esoteric language used in assembly, specially surrounding fluxes and their use. In blue italics are comments and extracts from

Cleaning Machine and Chemistry

Electronics Forum | Mon Feb 19 11:36:39 EST 2001 | billschreiber

Hello Mark, I wish it were that simple so I could direct you to a particular manufacturer and stencil cleaner model. Unfortunately, there are several issues complicating the process of cleaning all these applications in one machine. First and fore

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

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