Electronics Forum: noclean and conformal (Page 1 of 20)

Re: When using noclean flux or clean flux process?

Electronics Forum | Tue Sep 21 13:10:10 EDT 1999 | Dave F

Dear All, In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. I mean that I wonder why we use

Re: When using noclean flux or clean flux process?

Electronics Forum | Wed Sep 22 02:45:23 EDT 1999 | Brian

Dear All, In order to understand the soldering technologies in SMT, I'd like to understand why some cards are soldered and then cleaned, or only soldered whitout water cleaning nor "ultra sound" wavelength. I mean that I wonder

Solder Balls and conformal coating

Electronics Forum | Fri Apr 05 15:24:14 EDT 2019 | sever_83

What can cause solder balls to appear after conformal coating? Using Dymax 9-20557, light curing for 1.5 mins. Can too much heat from light cure cause solder balls?

Mixing conformal coating and RTV

Electronics Forum | Thu Apr 21 17:22:29 EDT 2005 | davef

We prefer epoxy.

conformal coatings and flux compatability

Electronics Forum | Tue May 23 12:18:25 EDT 2000 | mike weekes

Which companies would you consider for protective coatings, (conformal coating) and other levels of protection? I am taking a fresh look at alternatives. Know any good tests for testing compatability of coating with flux - aqueous or no clean? SMT

Mixing conformal coating and RTV

Electronics Forum | Thu Apr 21 10:44:35 EDT 2005 | jdumont

Morning all. So today I have been tasked with conformally coating a few of our first run PCBs for a new product line. The problem is that they have already had all the larger caps potted with RTV. Are there any problems with spraying the CC over the

Mixing conformal coating and RTV

Electronics Forum | Thu Apr 21 12:35:15 EDT 2005 | jdumont

Well that doesnt sound very promising. What im going to do is make sure these two boards I just coated (with the RTV already cured) will be used in house only. In the future we will do any conformal coating operations before potting with whatever mat

Solder Balls and conformal coating

Electronics Forum | Fri Apr 05 16:31:55 EDT 2019 | slthomas

Never heard of such a thing. Are you sure the coating isn't just making the solder balls more prominent? Where are the "new" solder balls appearing after coating?

Mixing conformal coating and RTV

Electronics Forum | Fri Apr 22 10:12:14 EDT 2005 | davef

Common RTV does out-gas causing corrosion. NASA allows use of non/low-out-gassing RTV. Try the following companies: * Ablestik Electronic: Materials, 20021 Susana Road, Rancho Dominguez, California 90221 U.S.A., 310-764.4600, F 310-764-2545 * Arlon

Mixing conformal coating and RTV

Electronics Forum | Thu Apr 28 11:14:27 EDT 2005 | bbarr

If you apply the RTV after coating, what happens to bond strength since you are now bonding to the coating and not the board? Will the caps still survive vibration and shock? I specify applying RTV before coating for this reason. Am I correct? I als

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