Electronics Forum | Mon Aug 02 08:11:25 EDT 2010 | muarty
Is there a specification in relation to the proximity to features that a Flex circuit should or should not be bent? I am experiencing broken tracks on some flexible circuits which appear to be getting 'flexed' directly adjacent to a soldered joint in
Electronics Forum | Tue Aug 17 10:26:26 EDT 2010 | quest@fr
Our customer ask us how many repair (component removal, change and soldering) we guaranty for SMT components on our printed wiring board. We all have the number "3" in mind but we can't justify it by a standard. We can't reply "state of the art". Doe
Electronics Forum | Wed Sep 01 05:09:27 EDT 2010 | grahamcooper22
Dear SMT Manufacturer, I am wondering if the device could have so much moisture in it and storing it in a dry cabinet isn't going to remove it all. As a final test to see if moisture in the device is causing the voids/solder balls then I'd bake it a
Electronics Forum | Fri Sep 03 06:53:38 EDT 2010 | arjan
Yes, we assembled a lot of QFN in the last years, but we don't have a X-ray machine by ourself, so we cant't inspect each device. This type LGA was designed on a prototyping board of our customer so we would validate our LGA reflow process and a rese
Electronics Forum | Thu Sep 09 13:25:22 EDT 2010 | eezday
I've seen the purple silkscreen before on ENIG board built with PbSn process. I would think that if temp is the issue the lower process temp would not have caused the purple ink. I remember that the flux I used was water soluble and I attributed th
Electronics Forum | Mon Sep 13 22:32:41 EDT 2010 | genesan
Hi all good morning and need advice from expertise here. One of my customer complain that they have constantly issues with one of their product and ask us to do cross section.The report show there was “no wetting to the PCB copper pad” and cause the
Electronics Forum | Mon Sep 13 22:58:49 EDT 2010 | genesan
Hi all good morning and need advice from expertise here. One of my customer complain that they have constantly issues with one of their product and ask us to do cross section.The report show there was “no wetting to the PCB copper pad” and cause the
Electronics Forum | Thu Nov 04 23:35:41 EDT 2010 | bdamico
Dear Eadthem, Please allow me to introduce myself, my name is Brian D'Amico. I am the president of MIRTEC USA. I would like an opportunity to speak with you directly regarding some of the issues that you have posted. I assure you that customer sat
Electronics Forum | Wed Nov 24 17:09:41 EST 2010 | bandjwet
We are working on placing an RF shield. Sometimes we have been dispensing paste (if the board is already populated), othertimes we have been printing the paste pattern (unpopulated board). Now we have a case where the customer is insisting on a pre
Electronics Forum | Sun Dec 19 23:22:11 EST 2010 | Jacki
Hi Rem Woo, ur board is such long one,7'. Our PCB is only 2' long but 3.5kg weight b4 solder. We use wave machine to solder it and PCB was sit on the pallet. all PCB side lengths are pressed by clamps. PCB was flat just after wave, however there was
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