Electronics Forum | Tue Jul 20 02:19:59 EDT 1999 | Hunter
Dear all Please help me to know what kind of tests usually done after SMT Pick & place and reflow oven. Our appliocation is Mainly fabrication of mother boards. Thanks
Electronics Forum | Fri Apr 03 02:52:42 EST 1998 | Jacqueline Coia
At this moment in time we are using water soluble solder paste on our PCBs these are cleaned using water only, agitated with ultrasonics. After drying a white/grey residue is left around solder joints. Reflow profile is fine and a reliable wash proce
Electronics Forum | Tue Aug 14 16:25:49 EDT 2001 | Hussman
I thought Dan saw the delamination after wash - not baking? What temp are your dryers on the washer set at?
Electronics Forum | Sat Jun 25 10:04:08 EDT 2005 | ktron
Hi MSK, Stencil thickness: 5mils with laser cut Smallest pitch: 20mils Underscreen cleaning frequency: 10 bds per cleaning Note: We have decreased the cleaning frequency from 10 boards to 3 bds to reduce solder bridging after printing Regards,
Electronics Forum | Wed Sep 30 08:21:07 EDT 2009 | cunningham
Hi We have a board at the moment thats passing ICT and passing functional test but its failing test after conformal coating has anyone had any experinces of this? or any idea what may be causing this?
Electronics Forum | Wed Jun 26 14:33:52 EDT 2019 | slthomas
Do you have any images that show the soldered terminations? Also images of the pcb terminations after the part has moved might be helpful.
Electronics Forum | Wed Jun 26 23:35:55 EDT 2019 | anhsang38
There are some pictures of solder and pcb terminal after part has moved. https://ibb.co/5hKBxXX https://ibb.co/Kw27cns https://ibb.co/HtKBMdW Rg Sang
Electronics Forum | Fri Jun 26 14:08:49 EDT 2020 | indhu
Hi, I am having a issue that SMT nut drop after reflow. The solder height all in specifications. Had tried adding flux inand the solder paste. But shows no improvement. Is the nut easily oxidize? Can anyone help me on this?
Electronics Forum | Sat Jun 27 02:15:33 EDT 2020 | indhu
Hi Victor, The part drop after the first side reflow itself. The part seems like didn't catch solder.
Electronics Forum | Tue Aug 14 12:18:02 EDT 2001 | nifhail
I experienced assembled boards delaminated after washed. You know...those old datecode PCBs that I was talking about a few weeks back ? I was forced to use it, and of course prior using it I've baked them. I've baked them at 125 Deg for 4 hours and/
