Electronics Forum: smt connector short (Page 5 of 71)

Help with odd smt stencil

Electronics Forum | Wed Dec 03 10:44:03 EST 2014 | kkay

We have a smt connector on side one of our pcb that overhangs through the board to the second side. We can't figure out how to print the second side with this part sticking out. Unfortunately we cannot run the second side first due to an LGA that has

smt fall-out -- acceptable rates

Electronics Forum | Wed Jul 14 13:41:40 EDT 2010 | rway

We are running SMT products and have been for some time now. First, I wanted to check with you folks to see what an acceptable FPY rate, or what you would consider and acceptable rate, is. Secondly, we are having issues primarily with product that

Air Quality sensor for smt area

Electronics Forum | Tue Feb 07 11:55:27 EST 2023 | tommy_magyar

What I would look at is the chemicals being used in the facility where the complaints are. Flux/flux gel, IPA, cleaning agents, etc. Perhaps you should limit the usage to certain people only, who would be trained how to properly use these. Something

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Wed Sep 04 22:48:13 EDT 2013 | winson16

SMT fine pitch connector having oxidation on lead and P&P machine keep rejecting the part. Is there any alternative way to reduce the part throw out rate without jeopardize the placement accuracy? Or is it possible to re-coat the connector lead or an

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Tue Sep 24 04:14:25 EDT 2013 | winson16

Hi Joe, first of all thanks for your input. I did tried to search for the Mydata brochure and found that they are using Lifescan Vision System (LVS) which i think should be vision analysis. Appreciate if you can explain more in detail how's the mecha

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Fri Sep 20 01:39:21 EDT 2013 | winson16

gold, one of the stablest elements on the > periodic table oxidising. Are you sure, and why > would you want to reduce the vision fail rate on > a part that is clearly shockingly poor? Old inventory is holding a huge material cost and if i can f

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Thu Sep 05 23:32:29 EDT 2013 | winson16

This connector was designed with gold flash plating and the lead's surface was become dull and some black mark was observed on the contact surface.

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Thu Sep 05 22:01:55 EDT 2013 | davef

Questions are: * How did you determine that the coating on your component leads is oxidation? * What is the oxide? BR, davef

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Fri Sep 06 07:40:02 EDT 2013 | spoiltforchoice

gold, one of the stablest elements on the periodic table oxidising. Are you sure, and why would you want to reduce the vision fail rate on a part that is clearly shockingly poor?

SMT fine picth connector lead oxidize-Throw out rate too high!

Electronics Forum | Mon Sep 23 14:26:27 EDT 2013 | joekirin

On machines such as MyDatas you have the ability to mechanically center parts rather than optically centering. If your machine is capable of doing mechanical centering that would eliminate the need for the vision analysis. -Joe


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