Electronics Forum | Thu May 07 02:16:45 EDT 2015 | buckcho
i need a menthod for calculating amount of > solder paste need in a single pcb or a lot of > pcb(1000 pcb). i need reduce wastage of solder > paste in the process , so any one can > help........ Hello, you can measure the weight, before the pas
Electronics Forum | Tue May 05 20:21:31 EDT 2015 | bhaskar
i need a menthod for calculating amount of solder paste need in a single pcb or a lot of pcb(1000 pcb). i need reduce wastage of solder paste in the process , so any one can help........
Electronics Forum | Tue May 05 21:38:40 EDT 2015 | kahrpr
Get an accurate scale. You can rent them if you do not have one or do not want to buy one. Weigh the bare board then paste the board and re-weigh it. Subtract the 2 and you have the weight. solder paste is sold buy weight so then you can calculate th
Electronics Forum | Sun May 10 01:20:07 EDT 2015 | bhaskar
Thank u sir for your idea. Practically it gave very good result..
Electronics Forum | Tue Dec 08 15:19:42 EST 2015 | proceng1
Apply the correct amount of paste for the pad size should work ok, as long as the part starts out in the paste. If you have a reduced aperture and the leg doesn't quite touch any paste could result in non-wetting or insufficient solder issues. I gu
Electronics Forum | Fri Aug 19 06:49:27 EDT 2011 | leadthree
I got this MQFP-144 and the soldering looks always very flimsy. I think I use a suitable leaded paste (water-soluble) and the stencil thickness is also OK. The IC on the image looks a bit shifted, that's not the problem. The problem is rather that
Electronics Forum | Thu Aug 25 21:26:27 EDT 2011 | leadthree
Solderability could be an issue. We usually buy the IC and stock it for up to 9 month. This time the ICs was from a broker and the datecode was not the latest. This said, we use already a solder paste that contains watersoluble flux, which is suppos
Electronics Forum | Sun Feb 05 17:44:47 EST 2017 | spoiltforchoice
Printer->Paste Inspection(which might be a feature of the printer)->High speed placer (for all the little parts)->Accurate Placer(for your BGA Processor,RAM,eMMC and big things that don't fit in the high speed)->Reflow oven->AOI->PCB stacker All of t
Electronics Forum | Mon Dec 07 14:55:41 EST 2015 | clydestrum
So I have an issue coming up that I'm not too sure how to handle. A board was designed with the wrong footprint for a 3-lead transistor in which the single-lead side has a much larger (think thermal pad for qfn) copper land than what is meant for the
Electronics Forum | Tue Nov 28 11:12:48 EST 2006 | billwestiet
The ONLY (unlikely) cause I could think of is if you are pushing the component into the solder, ending up with more solder on one side than the other. Why do you think it is the volume of solder that is causing this? By the way, there are "low tomb
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