Electronics Forum | Tue Feb 04 14:03:13 EST 2020 | dekhead
As long as pressure is set properly (may require re-adjustment when adding / removing modules) then have not seen / heard of issues with damage to bottom side components. This assuming that rubber tips are in place and in good shape. I have a custome
Electronics Forum | Fri Feb 21 07:14:59 EST 2020 | bk
I would always have top and bottom preheaters in a solderwave machine. Even if you can make it work without them, it's better to heat both sides of a board then just one. Far less stress on the parts you are soldering. Plus you may need it one day fo
Electronics Forum | Tue Feb 25 16:45:45 EST 2020 | stephendo
One thing that you do not want to do is run a 240V oven at 220V. One place I worked a few lifetimes ago had an oven that had five top zones and only two on the ends on the bottom. It was something like 440V but supplied with 408V. It took a long long
Electronics Forum | Fri Jun 26 14:27:51 EDT 2020 | victorzubashev
Hi Indhu, It could be multiple reasons but probably one root cause. metal nut might require reflow profile change- you need to check it with SMT reflow profiler. the part might be oxidized - you can check solderability or try to solder part using a
Electronics Forum | Thu Sep 03 22:03:32 EDT 2020 | SMTA-64386139
Both conditions are acceptable for this bottom brazed flat pack package. The solder coverage must be within 0.070 inch of the lead/package interface per MIL-PRF-38535, paragraph A3.5.6.3.4.a. While that requirement could allow for a gold gap near t
Electronics Forum | Tue Sep 14 04:16:55 EDT 2021 | mokshamanthra
Thanks DWL, we have a board with double sided SMT components now. and there is an intrusive component on the bottom side which is build first. the connector pin is extending out by 0.3mm and this is causing printing issues when building top side. we
Electronics Forum | Wed Oct 06 20:23:38 EDT 2021 | stephendo
If you can, it would be best to have a scrap board with a scrap BGA and drill a small hole in the bottom of the PCB and attach the thermocouple lead to a ball. This is assuming that you have a convection oven. If you have an IR oven, and that is wh
Electronics Forum | Mon Nov 22 22:16:18 EST 2021 | dontfeedphils
From what I remember it was pretty easy/straightforward. I'd grab an image of the bottom side of the panel from our AOI, scale it, and load it into the offline programming suite. Program flux and solder paths, then iron out the kinks online during th
Electronics Forum | Thu May 12 12:59:54 EDT 2022 | spoiltforchoice
The most annoying thing about these boxes I have encountered is that nobody seems to want to keep using the same box and the same hook for more than about 5mins, some are easy to open, some make it easy to drop the setncil straight of the bottom and
Electronics Forum | Tue Jan 24 11:07:41 EST 2023 | poly
Emtimov, what are you using instead? Hand soldering? Is the repeatability due to lacking bottom side fiducials or is the process just inconsistent? We've got a few connectors, something like 20 jacks with 3 pins each on some of our products. Our ma
