Electronics Forum | Thu Dec 19 14:00:24 EST 2019 | kylehunter
True, but with rosin it should protect the joints pretty well right?
Electronics Forum | Tue Dec 24 20:04:04 EST 2019 | kylehunter
Hmm OK. Even a NASA article describes that rosin is safe not being cleaned lol.
Electronics Forum | Sat Dec 07 07:23:43 EST 2019 | stephendo
Over the years I have gotten the best support from Aim and Alpha and the least support from Kester. If you can, you might want to switch to a solder supplier that gives good support.
Electronics Forum | Tue Dec 03 18:51:57 EST 2019 | kylehunter
Hi all, We are having a confusing defect with one of our client's boards. It is a large board, 30" x 12". The client supplies the LEDs, they are cheap overseas diodes, and it is not uncommon to have reels with the packaging torn. We have w
Electronics Forum | Fri Dec 20 00:10:55 EST 2019 | sssamw
Not really, if this is a normal consumer electronics, could be no big issue. Anyway flux residue provide ions and the substance absorb water or moisture. If for automotive or space, could have high risk, it depends your application.
Electronics Forum | Thu Dec 26 12:41:53 EST 2019 | emeto
We agree with your statements. 1. Having manually printed board will compromise your print and you don't know how much paste you have on each pad. 2. LEDs falling off that easily might be related to contamination, considering that your profile is not
Electronics Forum | Thu Jan 02 08:04:06 EST 2020 | philc
You might want to try baking the LED's in an oven for 24 hours prior to build. We keep our LED's in a humidity cabinet all the time, as we have noticed poor solderability if they are left out for too long. This may be even more important when buying
Electronics Forum | Wed Dec 04 10:59:04 EST 2019 | dwl
The solder looks a little grainy for Sn/Pb solder but that might just be the picture quality. There appears to be plenty of solder on the pads, so I'd rule out anything to do with the stencil. One possibility that springs to mind; how long is your
Electronics Forum | Mon Dec 09 16:05:22 EST 2019 | slthomas
All termination platings are not created equal (sic). Some parts put up more of a fight against wetting than others, and in those cases you really have to dial it in. It seems like that in most of those cases I end up reducing the temps in the midd
Electronics Forum | Wed Dec 04 04:28:58 EST 2019 | oxygensmd
It seems there isn't right connection between solder and solder-legs. Maybe check that the LEDs get huminidity, have some oxidation on the legs, try different solder paste, check the reflow solder profile. On the photo I can not saw properly reflowe
