Electronics Forum | Thu Oct 14 11:12:10 EDT 2021 | dontfeedphils
"We sometimes have to pull the boards off the line and wash the solder paste off the boards." Unfortunately I can't answer your question with any authority, but I guess my question in return would be why? Can you do something to address t
Electronics Forum | Thu Aug 31 05:20:08 EDT 2000 | dougie
Thanks for your help guys. We've V-scored boards in the past and it led to difficulties, as mentioned with the depth of groove etc... Our PCB's vary in shape and size drastically, and I mean drastically. So it looks as if a little more though on wh
Electronics Forum | Fri Apr 16 04:19:28 EDT 2004 | denis_s
Hi, I've a problem with a BGA. I've the impression that the balls broke then there is a too big mecanical stress on the PCB. I lost some dBm and when I press on the BGA I measure the good value! It's like the balls are take off the BGA or PCB and wh
Electronics Forum | Tue Mar 02 22:40:52 EST 2004 | pdeuel
To clean up other replys I will add that some most all machines have global correction. Most placements are an off sets from pcb 0,0 usually the lower left corner of the board. When the machine locates the fiduitals and these fids are not exactly whe
Electronics Forum | Fri Nov 23 05:59:18 EST 2018 | premkumar_haribabu
Hi RObl, Thanks for response , sorry to ask again & again . Is cobar paste solved the issues from poor wetting from nickel to PCB soldering,whether it will improve the peel off strenth more than 5 kg ?? as per our current last production , this nic
Electronics Forum | Mon Dec 05 17:46:10 EST 2022 | SMTA-64387381
Does anyone have experience with routing through areas of PCBs with Cu traces running through them. Trying concept to design in functional "wing" portions to our main board in an effort to get 2 in 1 functional boards - a fully functional main PCB
Electronics Forum | Fri Apr 17 07:45:43 EDT 1998 | Robert Meston
We have to mount our SMD devices 0.1 to 0.4 mm off the pcb PCb substrate to compensate for thermal stressing in a Space enviroment. Has any one any ideas or contacts for dissolvable pads. this only applies to leadless components
Electronics Forum | Tue Jun 11 22:06:06 EDT 2002 | scottxiao
I encounter the problem, it is easy for pad(copper) to drop off from the PCB, which is Ni/Au finish. so my question is whether there is any specification about the force between pad and laminate material, and does the PCB corpoartion test this parame
Electronics Forum | Thu May 21 02:11:12 EDT 2015 | Pawel
Hi everyone, I have a lot off failed inspections on SPI with contaminated PCB (hair, speck of dirt, fiber...). Do you know any vacum tool which can clean board before screen printer?
Electronics Forum | Tue Jan 21 16:28:02 EST 2003 | tony_sauve
Sorry I didn't close this one off last year... We had some failure analysis done on these PCB's ( 3D x-ray,microsectioning,SEM) and the results definitively proved that there was some contamination @ the base of the uvia's that had the voiding. It ap
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