Electronics Forum: cleaning flux residue from wcsp (Page 1 of 37)

No-Clean flux residue from Secondary Ops

Electronics Forum | Mon Sep 23 12:59:12 EDT 2013 | pauldavis4

New pcba supplier sent us first article pcbas (SMT, Wave & hand solder operations) that failed our testing due to no-clean flux residues found under ICs and around passive capacitors. Second lot came in and had 100% pass yield, but we still see a cl

Flux residue cleaning procedure

Electronics Forum | Tue Oct 31 21:49:38 EST 2006 | davef

First, we assume the white residue is only on the connector and not on other components. That would imply that either: * White stuff was on the connector when it came in-house from your supplier. [Confirm this theory by baking some connectors from

No clean flux residue

Electronics Forum | Fri Jun 01 09:50:01 EDT 2001 | lumidor

Our PCBs manufactured with no clean flux have a waxy film on the board...is this normal? Our contract manufacturer recently switched to no clean from water wash. Thanks Carl

No clean flux residue

Electronics Forum | Fri Jun 01 12:07:53 EDT 2001 | medernach

No clean residues can range in appearance from brownish gunk that looks like tree sap (because it is in some instances) to almost no residue at all. Is this product exposed to a wave soldering process or SMT? I would guess it's a wave process if th

Flux residue cleaning procedure

Electronics Forum | Mon Oct 30 20:24:35 EST 2006 | davef

As we understand it, you: * Get some nice BGA from your supplier * Find BGA to be packaged properly * Bake the BGA for 24 hours at [what temperature?] to reduce the potntial for damaging moisture sensitive components during following processes * Remo

No clean flux residue

Electronics Forum | Fri Jun 01 16:22:35 EDT 2001 | davef

Your supplier�s approach to managing process change is TOTALLY UNACCEPTABLE!!!! Now, let me get the froth back in my mouth. How in the world do we know if the residues on these "no-clean" boards are compatible with your product? J-STD-001C, para 4

Removal of No-Clean flux residue

Electronics Forum | Wed Sep 05 17:37:56 EDT 2001 | seand

Hello Jeff, If you have components on your board be careful of how low the frequency is that you will be applying to your board. Ultrasonics are great for cleaning stencils and bare boards at around 40kHz. These frequencies (and Lower)may however

Help with flux residue spec

Electronics Forum | Mon Nov 01 19:52:47 EST 1999 | John

I have a thru-hole PCB that malfunctions when "no clean" flux is left on certain parts of the board. I have specified "the PCB shall have no flux residue". Our state side vendors (we have one offshore -they still use freon to clean) are complaining t

flux on PCB's after cleaning

Electronics Forum | Wed Jul 21 17:49:52 EDT 2004 | jsk

problem: Too many solvents and boards are not clean Flux remains on the board after vapor degreaser and "Powdery" white residue after vapor degreasing Flux type is kester 186 Process: hand solder High Temp alloy, spot clean after hand solder e

White residue after cleaning with IPA

Electronics Forum | Sun Jan 26 09:32:55 EST 2003 | davef

But soon after cleaning and drying with IPA, we find a white residue formation. A: IPA will not nothing to clean your board. The white residue is exactly what you should expect. Search the fine SMTnet Archives for background. >How do we avoid th

  1 2 3 4 5 6 7 8 9 10 Next

cleaning flux residue from wcsp searches for Companies, Equipment, Machines, Suppliers & Information