Electronics Forum | Wed Jan 10 04:38:05 EST 2018 | smtspareparts
Obviously the cost difference between only smt and smt+th is huge though TH only 1 components,they need different material,machines,tools and control methods,so if possible just use only smt process to assemble all components,but to verify if the usb
Electronics Forum | Fri Aug 24 01:25:58 EDT 2018 | cupet
Hi everybody, please advise in case of soldering problems after the reflow soldering. The problem occurs randomly at different locations on different PCB's (not the complete surface of the board). These places are very difficult for rework. Could you
Electronics Forum | Fri Aug 24 11:58:18 EDT 2018 | cupet
Hello davef, thank you for your reply. What do you think about the footprint for the diode on the first picture where the component is not assembled? There is good wetting on one pad of footprint and the other pad has bad wetting. This problem is not
Electronics Forum | Fri Aug 24 12:24:35 EDT 2018 | davef
Could be ... Consider this: The LED and the BIG pad reflowed before the small pad. The superior force of the solder on the BIG pad pulled the LED over and the LED took the solder on the little pad along with it. Try this: Print paste on a board. No
Electronics Forum | Mon Oct 01 15:18:01 EDT 2018 | SMTA-Shafiq
Hello All, I'm looking at performing a cost analysis to calculate cost per placement at SMT. I've read articles and many suggest simplifying it to labour cost (hourly rate x # of operators) / # of placements per hour. Other angle to this is evalua
Electronics Forum | Tue Jul 16 12:24:25 EDT 2019 | slthomas
In VERY general terms, water soluble flux is usually better at getting good wetting of the soldered connections unless you have a very well controlled process, in which case no-clean can be very handy (you don't have to clean). Water soluble flux re
Electronics Forum | Fri Feb 14 04:46:39 EST 2020 | tamasmagyar
Hi Nizar, Would you consider having maybe separate nozzles for two separate connectors? If they are different in size, you might have a problem there, since the nozzle you use, is only good for the one you get the nozzle for. After that, I assume yo
Electronics Forum | Mon Aug 31 19:15:36 EDT 2020 | dilogic
We have GSM2 with FlexJet heads (an older one). There are 7 sensor amplifiers (with LED indicators) for touchdown detection and one for z-safe detection which is of a different type (with numeric LED indicator). I can't find anywhere what the right n
Electronics Forum | Wed Dec 09 18:51:06 EST 2020 | johndep7
My company has been having issues with a lot of solder balls, solder splash, and flux balls all over a specific board. Now this is one of the only companies that require us not to clean our boards after our work is finished but this is also causing a
Electronics Forum | Fri Jan 29 16:17:13 EST 2021 | donnie15
The impact is low on larger pitches and pad sizes. as things get to the .4mm pitch the pad differences start affect your ball size and yields. The trace size going into the pads and the solder mask relief can cause some odd shaped pads with signif
