Electronics Forum: how to fix tombstone at smt (Page 1 of 2)

How to fix flex bent after reflow

Electronics Forum | Mon Oct 31 13:01:58 EDT 2022 | emeto

It travels on the SMT carrier bent through all he process.

How to fix flex bent after reflow

Electronics Forum | Wed Oct 26 14:28:12 EDT 2022 | emeto

Hello colleagues, I have a very long flex assembly that I run on a SMT carrier by bending assembly in the middle. This crates a curve after reflow, which I want to get rid if. Any ideas.

How to fix flex bent after reflow

Electronics Forum | Sat Jan 21 13:49:14 EST 2023 | pcbsino

perhaps we can help you for this SMT and THT part soldering problem, better not bend it not too hard. Electronic manufacturing pcbsino.com

How to measue SMED at SMT

Electronics Forum | Wed Sep 04 11:26:17 EDT 2013 | srgbarba

Hi, I'm trying to implement SMED metric at SMT area in order to improve our change over (CO) up to 10min in high mix low volume process, ant at this moment the start and end point is the inspection before the oven, and what I'm trying to figure out i

How to measue SMED at SMT

Electronics Forum | Sun Sep 08 18:19:58 EDT 2013 | davef

Not quite what you're asking, but try OEE as your metric http://www.smtnet.com/index.cfm?fuseaction=search_submit&searchstring=oee&collection=site_forum BR, davef

Books Available to Review at SMTnet

Electronics Forum | Wed May 24 17:49:51 EDT 2000 | Keith Luke

SMTneters, The end of May finds several recent publications from leading publishers on my desk. I am all too happy to share these books with our loyal SMTneters in the hopes that they will provide us with a timely review of the new release. For ma

Restriction to population one batch of component at Fuji machine

Electronics Forum | Sun Oct 26 12:06:09 EDT 2008 | pima

Hello I want to aks more experienced SMT engineers about one thing related with Fuji machines. Is it possible to protect some how to avoid populating pcb with component from different batch? We have one same part number same vendor but customer does

Re: How to do with tombstoning for component '0402'

Electronics Forum | Wed Nov 01 14:42:17 EST 2000 | MRMAINT

We had some similar issues on one of our products.The oven profile is critical. We found that with a gradual soak ramp up it took care of about 80% of the tombstoning.The other thing that we found was pad design issues. Take a look at the sept. issu

Re: How to do with tombstoning for component '0402'

Electronics Forum | Tue Oct 31 23:32:31 EST 2000 | DL

Have You adjusted the placement properties of your pick n place machine/software for a 0402, I'm thinking x, y and add a little z. seems to work for me :) (as a temp/perm fix) thinking also about the numerous variables involved. Your printing process

How to run SMT production with low defects

Electronics Forum | Thu Aug 15 13:36:44 EDT 2002 | kenbliss

I would take the following method to start Which defect is taking the most labor time to fix. which defect is causing a bottleneck to your production. Fix the one causing the bottleneck first as it will improve your plant output and profits Then

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