Electronics Forum | Mon Jul 01 12:37:38 EDT 2013 | tpost
I do have access to an X-ray but it is only 2-D and it just appears as a black solder joint, not to impressive.. The main question though if it is a reowked solder joint does it still need to show wetting on the lead or can it be covered with solder
Electronics Forum | Mon Jul 01 13:25:31 EDT 2013 | tpost
I think it is wetted also but I cannot verifiy without actually seeing the toe, heel or side fillets. In this case, the lead was overhanging the pad and as with this type of lead it is not acceptable so they were reworked. Many times rework personel
Electronics Forum | Thu Oct 31 11:47:00 EDT 2019 | slthomas
I've never tried OSP so can't speak to it's real world use. I only know what I've read about it (it has a shelf life and allegedly is less physically durable than ENIG) so I don't believe that it's a good fit for us. I understand that it solders
Electronics Forum | Mon Nov 04 14:56:35 EST 2019 | stephendo
I think it might be the best choice for OEMs that only run one finish and practice JIT. (taking cost into account) For everyone else I think they will eventually run into trying to use them too long after they have been opened. But when you can run b
Electronics Forum | Wed Sep 20 19:43:06 EDT 2000 | Dave F
Some RF components are made in copper in weird spiral and parallel strip-line shapes. I'd either: * Send the boards back to where ever you got them and tell that bird brain to use SM-782 pads and practices. ... OR * Get the bird brain that sent you
Electronics Forum | Mon Apr 21 10:59:39 EDT 2008 | davef
That you have 'grainy' solder only at the ends of the connector and not at all solder connections indicates that your quality types are on track and are pointing you in a direction worthy of investigation and developing a better understanding of the
Electronics Forum | Thu Jun 27 17:32:35 EDT 2013 | tpost
We recently had a question come up regarding the amount of solder on a flat underside termination ( we referenced Flat Lug Lead in IPC 610). Judging by the photo you can see on the Left is a target solder joint, but on the right is one which had rewo
Electronics Forum | Mon Jul 01 13:19:55 EDT 2013 | emeto
I always look for a toe fillet if the design allows you to. Many times the pad design is close or exactly the size of the leads which makes people to touch it up right away. I told them hundred times not to but...Luckily I have 3D x-ray and I can tel
Electronics Forum | Mon Apr 21 11:55:29 EDT 2008 | realchunks
"Disturbed" usually means some form of movement. I would think your leads are moving due to warp as the board exits the reflow zone. Not knowing your profile, I would suggest checking your profile. Make sure you have adequate "above liquidous" and
Electronics Forum | Wed May 01 23:46:33 EDT 2002 | sohct
Are these 2 surface finishes the same? If not what is the difference? Thanks
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