Electronics Forum | Wed Feb 14 02:08:40 EST 2018 | ameenullakhan
Hi Sweetoldbob, Thanks. We are using SMQ92J solder paste ( Sn63/Pb37 ). We are on higher side of reflow time for leaded paste. Regards, Ameen
Electronics Forum | Fri Dec 14 23:10:05 EST 2018 | jandon
High quality coated blades are easier to clean but has zero affect to solder paste sticking.
Electronics Forum | Tue Dec 07 07:57:09 EST 2021 | jineshjpr
Hi DWL, Thanks for your quick response. Let Me revert back once of all your feedback are answered. Manufacturer / Stencil / Solder Paste.
Electronics Forum | Fri Jan 21 06:35:51 EST 2022 | stivais
"Manual washing" of a misprint board basically is smearing of printed solder paste all over the board. And trying to remove (wipe off) it afterwards. So for me it would not be any surprise that the solder paste ended up on the pads where it was not i
Electronics Forum | Mon Jul 17 09:09:42 EDT 2023 | tommy_magyar
Things I would check: - solder paste - reflow profile - stencil printing parameters including support, stencil itself and squeegee - MSL procedures - inspection between pick and place and reflow to check paste printing (ideally SPI) Hope this h
Electronics Forum | Thu May 04 10:35:24 EDT 2000 | Sal
THE TERMINONOLY I USED SEEMS TO BE INCORRECT , I THINK THE TERM I WAS LOOKING FOR IS WICKING . BACK TO THE PROBLEM , ISSUES WITH RESNETS, WHERE THE SOLDER PASTE SEEMS TO BE WICKING AWAY FROM THE TERMINATIONS OF THE COMPONENT TOWARDS THE VIAS WHICH AR
Electronics Forum | Mon Apr 17 21:09:38 EDT 2000 | Bene
Do you know the wetting speed of the solder paste you are using? Ask your vendor for this measurement. I have observed this issue on several products using pastes with wetting speeds faster than 1 second. As stated previously, smaller packages are m
Electronics Forum | Tue Feb 08 03:14:37 EST 2000 | Roni H.
Hi Jose, J-lead are very sesitive to coplanarity, which is the major cause for the defect you described. Other posibility is that there is not enough solder paste ; J-lead need around 10% more solder past then L-lead, You have to consider the screen
Electronics Forum | Thu Oct 14 23:10:20 EDT 1999 | Dennis O'Donnell
I once had similar problems. It went away when I switched to a different brand of solder paste. When I switched back to the previous brand of paste the problem came back. I don't know why but the solder paste brand made a difference. go to: www.
Electronics Forum | Mon Oct 11 12:25:02 EDT 1999 | Whitney Trepel
We have three buckets filled with leftover solder paste from our screen printing process. Kester has informed me that they no longer take paste, but only dross and pot dumpings. Does anyone know if there's someplace I can recycle this, or am I goin
