Electronics Forum: no-clean solder paste (Page 1 of 693)

Conversion to no-clean solder paste

Electronics Forum | Mon Jan 24 16:37:26 EST 2000 | Kris W

To all, This may appear to be laziness on my part, but I need to ask for some advice. We are in the process of qualifying no-clean solder paste to replace or current RMA paste. I have performed qualification runs and extensive reliability testing

Re: Conversion to no-clean solder paste

Electronics Forum | Tue Jan 25 13:06:47 EST 2000 | Bill Schreiber

When switching from cleaning RMA to a no-clean flux, one area that is commonly overlooked is the stencil cleaning operation. Stencil cleaners that are effective in cleaning RMA often fail when cleaning no-clean (especially alcohol cleaners). Pallet

Re: Conversion to no-clean solder paste

Electronics Forum | Tue Jan 25 15:13:34 EST 2000 | Dave H

Kris, Weigh very carefully the above caveat with regard to IPA. I would ask for documentation to substantiate this claim, which likely stems from a desire to sell "his" chemistry, while "slamming" competition. I'll be happy to run some tests for you

Re: Conversion to no-clean solder paste

Electronics Forum | Tue Jan 25 09:25:23 EST 2000 | Dave F

Kris: I can appreciate your hesitance. Done correctly with proper planting and fore thought, the change to no-clean affects every part of your operations operations from purchasing to receiving and on down the line. Two things: 1 Following with y

Possible to water wash no-clean solder paste boards?

Electronics Forum | Thu Jul 14 00:54:53 EDT 2005 | Pyramus

Hi production encountered a problem today. There have been a mix-up of solder paste. We are currently running clean process in one side of board. Unfortunately when PD run the other side process they were able to used a wrong no-clean solder paste.

Possible to water wash no-clean solder paste boards?

Electronics Forum | Sat Jul 16 03:59:31 EDT 2005 | pyramus

Thanks Everybody!!!

Possible to water wash no-clean solder paste boards?

Electronics Forum | Thu Jul 14 01:43:09 EDT 2005 | pyramus

Solder paste used was Kester FL250M (no-clean).... components affected were only chip components 0603, no BGA & no IC components.

Possible to water wash no-clean solder paste boards?

Electronics Forum | Mon Jul 18 00:00:35 EDT 2005 | adlsmt

I have nothing to add technically but we have been washing no-clean for years. Use very clean filtered DI water to avoid the white residue issue and some good detergent or sopanifier and you will get great results.

Possible to water wash no-clean solder paste boards?

Electronics Forum | Thu Jul 14 13:45:32 EDT 2005 | slthomas

We've only seen it done by accident, and the result was a lot of white flux residue. You do need to make sure you get it all off, and to do so most likely means using a saponifier like sara suggested.

Possible to water wash no-clean solder paste boards?

Electronics Forum | Thu Jul 14 16:07:16 EDT 2005 | saragorcos

Here is a link to a specific article about cleaning no-clean assemblies: http://www.residues.com/pdfs/Clean_No_Clean.pdf Our facility does a lot of contract cleaning and cleanliness testing for various companies around the world, and that study s

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