Electronics Forum: conceded (Page 1 of 1)

Black Pad

Electronics Forum | Tue Jan 10 17:10:35 EST 2006 | mdemos1

JAX: Thanks for the reply. We did send one of the boards back to the bare board supplier and they do concede that it is black pad. When you inspect the assembled board under a microscope, you can easily move the entire solder joint away from the p

Black Pad

Electronics Forum | Tue Jan 10 08:07:45 EST 2006 | mdemos1

Hi. We have experienced black pad phenomenon on a lot of 200 boards (immersion gold finish). This lot of boards has been completely assembled and we had about 20% fallout during functional test. My question is this ... Is there a way to inspect th

Yield levels

Electronics Forum | Thu Jul 18 15:20:17 EDT 2002 | dragonslayr

I suggest following the standards developed by IPC for DPMO (go to IPC. org for more info) Create your own benchmark, within your own environment, for the specific PCA, then do trend analysis, 6 sigma improvements, etc. For a rule of thumb benchmark

Selective Soldering - Barrel Fill

Electronics Forum | Fri Oct 22 19:34:56 EDT 2010 | hegemon

Thanks for the help guys. Nice to think I was basically on the right path. PCB manufacturer has finally conceded the barrel defects and is remaking the PCBs. We are big on pre-tinning the leads of TH connectors as well as providing some good pre

Water Soluble vs. No Clean

Electronics Forum | Tue May 02 18:15:21 EDT 2006 | Mike Konrad

We manufacturer cleaning equipment (full disclosure) so, our answer may seem self-serving. The facts however are accurate and relevant so here I go� Changing from an OA (water soluble) flux to a no-clean flux makes sense. After all, even die-hard

01005 Qualifications - Lead Free

Electronics Forum | Fri Jan 24 16:10:11 EST 2014 | davem

Thanks Dave, I actually found that article yesterday. It is one of the better ones out there. Unfortunately, though Ed does concede that there is a "sweet spot" in the process window for trying to reflow 01005's with SAC305 using air, no further inf

Re: Who Are The X-Men?

Electronics Forum | Mon Oct 19 12:03:09 EDT 1998 | Scott Cook

Out of interest, are you using an 84V? 84VZ? a 60V? 60VZ? With SBIP or the Yamaha vision system (VICS 1000)? Do you have the old tray sequencer? > WRONG!!!! Why do folks still live in this mindset? I'm not slamming you personally. But this is preva

Re: Who Are The X-Men?

Electronics Forum | Wed Oct 21 21:27:32 EDT 1998 | smd

| | WRONG!!!! | Why do folks still live in this mindset? I'm not slamming you personally. But this is prevalent in our industry. | More opinion: | Make REWORK a nasty, dirty word. Work for the ROOT cause of a process problem. DO NOT ACCEPT rework a


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