Electronics Forum | Fri Nov 02 12:49:33 EDT 2018 | robl
Has anyone tried producing domed joints for high voltage corona reduction on a selective solder machine? I'm guessing it probably won't work due to gravity, but worth a shout. Thanks, Rob.
Electronics Forum | Thu Dec 14 04:42:11 EST 2017 | jineshjpr
Can anybody suggest how can I achieve good solderability in convectional reflow oven If I reduced Convection Air Speed 80%. The whole purpose is to reduce 0402 LED tilting in the convectional reflow and the PCB having QFN with 60 to 120 sec soak, 30
Electronics Forum | Thu Dec 14 05:07:55 EST 2017 | tsvetan
picture of the problem would help people to speculate what you do wrong
Electronics Forum | Thu Dec 14 15:05:17 EST 2017 | emeto
I am pretty sure, you are looking into the wrong spot. Your paste is too much, or your part has very inconsistent narrow leads(that includes wrong pad design as well.)
Electronics Forum | Wed Dec 20 07:16:16 EST 2017 | stephendo
I agree with Evtimov. What he didn't point out is that the surface tension of the solder would vastly overwhelm any force from air flow.
Electronics Forum | Sun Mar 19 16:32:05 EST 2006 | ausajid
hi same sort of broblem v r getting after reflow. i am not sure about the solderbeads how u can reduce, but the other issue u r talking about is apeture blocking.... u can reduce it by reducing the seperation spead. reduce it as low as 1-2mm/sec. th
Electronics Forum | Mon Feb 07 03:37:32 EST 2005 | etienne
Reducing the Printing Speed helps to reduce solder balls. Try it.
Electronics Forum | Thu Jan 18 12:21:57 EST 2007 | tonang
How to reduce flux contain on PCB after reflow process?
Electronics Forum | Sat Jan 19 12:39:16 EST 2019 | bane016
Have you tried to reduce the temperature for the second side of pcb?Try to reduce it to the minimum below the regulations by datasheet...
Electronics Forum | Fri Dec 24 04:22:11 EST 1999 | Keith Stone
When you get to fine pitch you might want to try reducing the aperture on the long dimension of the pad only. If you reduce the width of the pad you can get solder paste left in the stencil giving insufficient or unsoldered joints. Reducing the lengt
