Electronics Forum | Fri Feb 25 11:13:32 EST 2000 | Russ
This probably won't help much but I find it at least a little interesting. During some experimentation recently I accidently loaded a board into the wave upside down and it had a PLCC 68 package along with other types of components that had only bee
Electronics Forum | Fri Feb 25 11:13:32 EST 2000 | Russ
This probably won't help much but I find it at least a little interesting. During some experimentation recently I accidently loaded a board into the wave upside down and it had a PLCC 68 package along with other types of components that had only bee
Electronics Forum | Fri May 06 08:39:59 EDT 2016 | kahrpr
The first issue I see is that you have a high potential of the 402 tombstoning.
Electronics Forum | Fri May 06 06:51:55 EDT 2016 | abhilash4788
Hi All, One of my customer has provided a pcb design having common pad for 0402 and 1206 package(i.e 3 pads in the gerber, pad1,pad2 belongs to 1206 package and pad2,pad3 belongs to 0402 package) Will this create any solderability issue. Is anyone e
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 Jun 09 17:53:06 EDT 1999 | Tom B.
| I am interested in seeing how some of you quote smt work. Currently we quote off a bom without component packages known then look in data books to find out what type of component they are. This job will be mine soon but i really believe there is a
Electronics Forum | Sat Nov 09 08:04:52 EST 2002 | erhard
if you wave solder you have to glue the SMD parts on the bottom side. If you reflow the bottom side then you usually shouln't go over the wave afterwards. It's quite logical the joints melt again, that's what you want to achieve going over the wave.
Electronics Forum | Sat Nov 09 15:13:06 EST 2002 | mjabure
If I understand what you're saying, you are reaching reflow temp's on the top side while soldering bottom side components. You might want to run a glass gauge plate over the wave and make sure your contact pattern isn't too large. If your PCB is in c
Electronics Forum | Fri Nov 08 18:36:31 EST 2002 | leeloo
Nowadays I have a problem, I am in chsrge of the section of smt in my company, have a normal process inside my department with a minimal level of mistakes, the problem happens when the material is liberated to the lines of production on happened for
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