.gif)
Electronics Forum | Fri Nov 29 10:26:01 EST 2019 | marwan
flux my leave a white residues even after cleaning, when we want to select a flux for our Ersa Ecoslect we tryed a varity of fluxes (including the IF2005C) and we decide to use the Cobar 390-RX-HT because he gaved us the best results in soldering and
Electronics Forum | Fri Nov 22 16:59:43 EST 2019 | dwl
I'm worried about the voids that you have on the heel fillet of the leads. Off the top of my head, I don't recall if/what the IPC spec is for voids in gull lead fillets is but my gut instinct is that you're compromising the mechanical strength of the
Electronics Forum | Fri Nov 22 05:04:07 EST 2019 | SMTA-Matthew
We have some circuit boards where the solder mask seems clear instead of green on top of some of the tented via pads. No gold deposited during the ENiG process and no solder sticks to it but why is it clear and does it have any correlation to the thi
Electronics Forum | Thu Dec 05 11:40:36 EST 2019 | slthomas
That's a good point, although hand soldering a xfmr on a RoHS assembly isn't going to be a walk in the park. My other question would be did it fail because it got hot, or did it get hot because it failed?
Electronics Forum | Thu Dec 05 13:08:26 EST 2019 | thunder
I don't even know if it's a transformer,I think someone earlier said it was. I have a magnifying glass coming in addition to solder kit. Hopefully it will make the job a little easier, if i screw up I have a part on order. Do you see what I'm talk
Electronics Forum | Thu Dec 26 20:35:48 EST 2019 | luciano_zhang
I have design some PCBs but last time I met one problem they said missing the solder mask ...any one can give some suggestions why do some pcb manufacturers reject gerbers due to missing sodermask?
Electronics Forum | Fri Dec 27 13:16:18 EST 2019 | slthomas
Can you describe the failure mode of the soldering defect, i.e., is it failing to meet the height requirement for a castellated termination due to not wetting of the component terminations, or not wetting the pads sufficiently, or....? We install a
Electronics Forum | Tue Dec 31 02:13:14 EST 2019 | agoesfirmanto
This PCB model has been in production since 2018 and stopped production almost 1 year ago, now it has started production again and I found this problem. at the time of production in 2018 this problem did not occur. while the parameter settings do not
Electronics Forum | Thu Jan 02 07:04:57 EST 2020 | dontfeedphils
Pretty large solder-ball. Looks like it may have come from the ground pad since it's so large, in which case I would reduce the print coverage on the middle/ground pad and see how it works for you. You verified that these parts have the groundpad a
Electronics Forum | Fri Jan 31 10:04:14 EST 2020 | emeto
Jinesh, My initial suggestion is you have too much solder past. Please try to reflow a few of these parts without solder paste. Colse aperture, put some tacky flux on this part location and give it a try. I bet you will not see any voiding.
A US manufacturer of quality hand tools for those engaged in the repair, rework, R & D, testing, and assembly of electronic components and printed circuit boards from Through Hole to 2Mil Pitch Surface Mount.
98 Elm St.
Portland, ME USA
Phone: 1-207-775-6139
