Electronics Forum | Mon May 20 21:29:52 EDT 2002 | davef
Q1: Are we saying then that IMC can occur at the solder / Cu pad join on the PCB when finished assembled? A1: Yes, but in a broader context I am saying that when someone solders correctly, they form an IMC. Q2: Will the tin diffuse with the Cu over
Electronics Forum | Mon Mar 03 17:42:35 EST 2008 | tonyamenson
I stripped the entire board because I had to have the boards troubleshot. Had a high failure rate from the field. The board coating was applied about 5 months ago. I was told by my people anything past 3 days and you will need this type of stripper
Electronics Forum | Thu May 26 16:41:00 EDT 2011 | scottp
Here's what I do: - Test Surface Insulation Resistance (we're in the high reliability market and use a test significantly harder than IPC's). I also test SIR in combination with other assembly materials like conformal coatings and wave solder flux
Electronics Forum | Tue Apr 23 15:36:27 EDT 2019 | davef
Josh, are you setting someone up with these questions? Answers to your questions related to the subject line follow: Q1. Does the Epoxy Solder Mask Layer of a PCB protect against moisture absorption? Is this a primary function of the solder mask?
Electronics Forum | Mon Jun 12 22:02:48 EDT 2000 | Dave F
Jason: Wave soldering is the coolest thing!!!! First, so, what�s the chemical analysis of this white res? Can you point us to either tin, rosin, or something else? Second, how do you know that you are making these white residues? Could your boar
Electronics Forum | Mon Apr 30 10:06:13 EDT 2001 | CAL
John- Just few ideas at random (brainstorming) - While times are slow invest in training of your current staff. There are some great training facilities out there offering valuable knowledge. Knowledge is a valuable thing to have and will prove to be
Electronics Forum | Thu Jan 13 15:19:51 EST 2000 | Dave F
Hey Jack: It's certainly "do-able." Conformal coating adhesion testing was done as part of the "Evaluation of Low Residue Soldering for Military and Commercial Applications: A Report from the Low Residue Soldering Task Force," published by Sandia Na
Electronics Forum | Mon Oct 11 06:00:27 EDT 1999 | Brian
| Folk's, | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | I was wanting to do a straw poll on you guy's as to the type of resist's you are us
Electronics Forum | Mon Oct 11 12:24:07 EDT 1999 | John Thorup
| | Folk's, | | | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | | I was wanting to do a straw poll on you guy's as to the type of resist's yo
Electronics Forum | Mon Oct 11 13:05:51 EDT 1999 | Dave F
| | Folk's, | | | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | | I was wanting to do a straw poll on you guy's as to the type of resist's yo
