Electronics Forum: epoxy flux (Page 1 of 9)

BGA epoxy removal

Electronics Forum | Thu Feb 26 13:29:36 EST 2015 | swiese242

Use the appropriate heat for that part. You can then use techspray flux remover with a brush. Spray the brush, and not the board, to reduce spreading the flux. Acetone or alcohol are less expensive and may work as well.

Re: reliability of epoxy

Electronics Forum | Thu Aug 06 12:49:41 EDT 1998 | justin medernach

| I am looking for advice or information from anyone about the possible reliability problems associated with epoxy on solder pads of discrete devices. Will the epoxy expand and lift over time, Will there be adverse reaction between the solder and the

Re: reliability of epoxy

Electronics Forum | Fri Aug 07 01:02:51 EDT 1998 | zeek - just wanna to get a word in here

| | I am looking for advice or information from anyone about the possible reliability problems associated with epoxy on solder pads of discrete devices. Will the epoxy expand and lift over time, Will there be adverse reaction between the solder and t

Re: Spray flux through vias!!

Electronics Forum | Mon Sep 28 19:07:47 EDT 1998 | Steve Gregory

| I have had some field failures returned recently, the boards had flux contamination under the components in a sensitive area, Nothing really visible until the component was removed, and the board had no evidence of rework of any type. Is it poss

BGA Rework - flux dispensinx issue

Electronics Forum | Tue Nov 04 12:45:54 EST 2008 | smt123

Hi Martin, Have you considered printing the flux with a stencil? Stencils can be used for printing more than just solder paste. Quite regularly people use stencils for printing thermal grease, fluxes, conductive epoxy and more. The thing I like

Re: Fibres / threads inside PTHs

Electronics Forum | Tue May 02 11:50:26 EDT 2000 | Dan Foose

The first step in pinpointing the exact source of the fibers is to have them identified. Are they fiber glass, epoxy or flux? Or are they something else? I can help you with this if you want. Check out mfg-answers.com\ .

Fibres / threads inside PTHs

Electronics Forum | Tue May 02 11:13:02 EDT 2000 | Ashok Dhawan

I am finding transparent fibres , specks or needle shaped threads inside my via holes. I am not sure these are fibre glass / epoxy or flux. I do not find many on bare board. The flux used is NC Low residue and this assy is Single sided . Presently

Epoxied Parts Falling Off

Electronics Forum | Wed Feb 26 10:57:47 EST 2003 | larryk

Dave, I had to contact Circuits Assembly, but I got the article. I'm going to forward it on to Ryan. I think you're on to his problem with flux becoming entrapped in the epoxy. It plays along with Locktites suggestion of a longer soak on his profile.

PCB post reflow cleaning

Electronics Forum | Fri Apr 02 12:40:59 EST 2004 | Ron Herbert

White residue can often be caused by overheating the flux. When this occurs the flux is polymerized, basically turning it into an epoxy. You can usually determine if this is the problem by taking a pencil eraser to it. If it comes off, you have overh

Recommendation for Lead Free Epoxy used for Bonding & Underfill?

Electronics Forum | Tue Feb 07 21:34:52 EST 2006 | davef

We agree that curing Loctite 3515 at lead-free temperatures is not a good idea. For lead-free, we know of some no-flow underfills, but no capillary flow underfills. Contact your underfill supplier for recommendations. When you have this conversati

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