Electronics Forum | Thu Jan 23 12:43:14 EST 2020 | pavel_murtishev
Hello, There is curious PCB technology used for one aluminum LED PCB. First of all there is no solder mask. PCB tracks look grainy and there is no fillet near components. Tracks near components are thicker. A kind of material has been applied to
Electronics Forum | Thu Jan 30 20:10:24 EST 2020 | sarason
Clever idea. I used to work on hybrids. baking temp about 850 degrees C we used titanium and ceramic substrates. the high temp was needed to make the resistance layer partially melt. remove the resitance and you can run at the silver melting point an
Electronics Forum | Fri Feb 14 12:22:57 EST 2020 | etmpalletguy
OK, you can't glue, Pallet Guys pallets are out the door, dual line reflow prevents from any lower temp solder paste.... Do you have a 3D printer? Are there parts underneath the connector in question? Measure the PCB thickness, pint out a custom hold
Electronics Forum | Tue Feb 11 11:40:21 EST 2020 | emeto
Sebas, on your profile you have listed U2, U101, U102 and I was wondering if the questioned part is one of them. I attach a typical profile specs - you should follow the one for your paste. In the one you attached the slope is too fast, soak is prob
Electronics Forum | Fri Feb 21 11:35:11 EST 2020 | emeto
Hey just solders and QA people don't like it. As long as management likes it, who are these to argue? Fire them all and hire people that like cameras better. Now seriously - people who work with it should have the final word. You can also have both
Electronics Forum | Wed Apr 22 20:41:39 EDT 2020 | SMTA-Samy
We use Wondermask 2211 and we haven't had issues with the material creating gunk in the pot. You might want to call TechSpray and consult with a product specialist who can better advise you on what's best for your application. Rob mentioned the wave
Electronics Forum | Mon Jul 06 14:54:36 EDT 2020 | dwl
The pictures are kinda fuzzy so its hard to tell of the center pad is electrically connected to anything. If it's not, if its just here for mechanical stability, then you're probably fine. The other thing to make sure of is that both switches are th
Electronics Forum | Wed Jul 22 22:19:07 EDT 2020 | kghadiya
Hello Experts, I am using Heller 1707EXL in my shop. From last 2 months I have faced component missing and flying problem. I tried everything to figure out the problem i.e. change solder paste, re-calibrate PnP machine, several oven recipe etc but s
Electronics Forum | Wed Jul 29 21:16:17 EDT 2020 | SMTA-64387706
Hi, I have a PCB that works fine when tested before conformal coating with HumiSeal 1B73. It seems like the CC is causing electrical issues. We brush it on, so it is a bit thick. After curing we are getting QFNs that do not seem to connect well and a
Electronics Forum | Fri Aug 07 13:30:22 EDT 2020 | emeto
ASM machines have great algorithms for BGA and I am positive it will detect missing ball. Still, on your pictures it seems like you are severely starving solder in the locations shown on X-ray. Part seem too small to bend that much in reflow to form
