Electronics Forum | Sun Feb 06 12:59:33 EST 2005 | GC
Please try to use 6-8 mils ..you are overloading pads surface ..Please verify paste volume vs surface..Have fun
Electronics Forum | Mon Feb 07 12:47:18 EST 2005 | Indy
1. use 6-7mils stencil. 2. reduce aperture opening to 60-70% of pad size. 3. check viscosity of solder paste. According to that you might want to alter your print speed and pressure. Cheers Indy
Electronics Forum | Tue Feb 08 06:43:56 EST 2005 | dhanashekar
we have even tried with 6mil stencil even than we are getting the solder ball thanks for your suggestion
Electronics Forum | Tue Feb 08 10:33:26 EST 2005 | Dougs
have you had any reduction in aperture size though, we generally use a 6 mil stencil thickness with a 10% aperture size reduction for chip components and leaded components ( SOIC - QFP ) and a 1:1 ratio for BGA components without any problems.
Electronics Forum | Wed Feb 09 04:41:16 EST 2005 | dhanashekar
we are storge the soldering past as per the manufacture sefaction of arround 5deg before the using the paste we remove the paste from the storge and keep the paste in the room temp and then used. THANKS for the your soulation if ane other sulation pl
Electronics Forum | Mon Feb 07 15:38:32 EST 2005 | russ
We allow it (water only) as long as the bottle has a closed lid. We determined this to be acceptable since water is already present at each station for solder iron cleaning. We allow no other eating or drinking of any type. Russ
Electronics Forum | Tue Feb 08 10:57:21 EST 2005 | Rob
I suppose you could slow down the belt speed on reflow enough, but not sure on the long term effects of flux contamination or it's impact on flavour.
Electronics Forum | Mon Feb 07 15:53:12 EST 2005 | John S
I ran across a description of a SnAgCuIn variant of lead free solder that melts around 195C. Has anyone used such an alloy? Is it widely available? I haven't seen it marketed widely. Thanks John S
Electronics Forum | Mon Feb 07 20:05:01 EST 2005 | davef
Here's a similar thread: http://lists.smartgroup.org/SCRIPTS/WA-SMARTGROUP.EXE?A2=ind0403&L=smart-e-link&F=&S=&P=17013
Electronics Forum | Mon Feb 07 21:28:42 EST 2005 | Grant
Hi, That link above points to a weird forum, and I have no idea how to use it. Was there any reply to the original post on that forum? Some posts here on it would be good. Regards, Grant
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