Electronics Forum | Fri May 06 08:47:05 EDT 2016 | davef
You're correct. This design will have a record amount of 0402 rework for tombstoning and misalignments. Suggest that the pads on each end of all components be the same size in order to balance wetting forces during reflow.
Electronics Forum | Mon May 09 09:23:45 EDT 2016 | markhoch
I agree with the previous two replies. This is a perfect design....if you're trying to create a graveyard full of tombstones.
Electronics Forum | Wed Oct 30 15:50:22 EDT 2013 | joeherz
Vince, We see the same disks on some parts incoming. SMT PEM nuts in tape and reel are very common. We get the parts from PENN Engineering. One of them is SMTSO-M3-4ET. PENN Engineering may be able to steer you in the right direction on who their
Electronics Forum | Fri Oct 13 19:01:46 EDT 2023 | crystalw4280
I have an old Juki 2060 The electors were replaced on some heads that were disabled. Now we are showing some of the same errors with those heads. Does anyone have any suggestions for possible cause that would make this happen again. Another warning
Electronics Forum | Tue Oct 24 19:09:12 EDT 2023 | sarason
Possibly blocked air lines did you check air pressure? Also drivers on the relevant boards. or simply damage in the flexible wiring harness( a nightmare) sarason
Electronics Forum | Mon Jan 10 19:13:46 EST 2000 | TNT
HELLO MIKE, THE PROBLEM WITH THE VIA BEING IN THE MIDDLE OF THE PAD CAN BE HANDLED. IF YOU ARE HAVING PROBLEMS WITH SOLDER FLOWING THROUGH AT REFLOW YOU MIGHT WANT TO CHECK YOUR VACUUM AT YOU SCREEN PRINTER. SOMETIMES THE VACUUM THAT HOLDS THE PCB
Electronics Forum | Thu Dec 10 13:27:36 EST 1998 | Dave F
| Dear everybody : | Does anyone have some information about "bleeder pad"? it seems a method to avoid solder shorts across very small SMT pads.If someone have any idea about it, please contact with me , thanks ! | Young: I'm unfamiliar with the
Electronics Forum | Wed Dec 09 18:56:40 EST 1998 | young
Dear everybody : Does anyone have some information about "bleeder pad"? it seems a method to avoid solder shorts across very small SMT pads.If someone have any idea about it, please contact with me , thanks !
Electronics Forum | Sun Aug 26 11:27:12 EDT 2007 | vangogh
Hi Davef, Thanks for the reply. There seem to be no issues on SMT reflow based on some samples done. We have not stripped the gold yet. We did a X-section+EDX and we are seeing traces of copper on the nickel layer. Any idea what is the implication of
Electronics Forum | Fri Nov 17 15:04:59 EST 2006 | ehess
WE have a problem with a DPAK component floating during reflow, causing it to move to the point where it affects the toe fillet. We have been using a dot of SMT epoxy to hold it secure for the moment. I have looked on many sites, but no whrere can
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