Electronics Forum | Wed Oct 04 16:14:17 EDT 2006 | inds
what is your peak temp.. if you try to go too high say 225-230 deg C there is a fair chance of seeing voids.. depending on your ball size and paste volume you can get a good collapse at temps below 225deg C...
Electronics Forum | Thu Oct 01 06:22:48 EDT 2009 | rajeshwara
We approved the Reflow Profile from Cookson Solder Paste Manufacturer we are using. Now I am suspecting on method of vias designing below that QFP.There is exposed pad for that QFP and we print solder paste there , but when i see under x-ray there is
Electronics Forum | Thu Feb 10 20:02:24 EST 2011 | bandtank
Thanks for your advice. My business model is fine, but I just find it to be unreasonable that there isn't a "no frills" oven below $3500 that maintains quality. I'll spend that much if I have to as I don't want to mess around with bad solder joints o
Electronics Forum | Fri Mar 18 15:46:14 EDT 2011 | remullis
I agree with the comments below. I see no difference with lead free. Across five reflow ovens our external nitrogen tank was about 14' tall and 7' round. I am with a different company now due to the great ole american "lets send product out of the co
Electronics Forum | Tue Aug 16 17:11:26 EDT 2011 | bobbydur
Ok, thanks to you all for your excellent advice. I'm ready to put this to bed now but just before I do, maybe there is 1 more thing I can try. Can you see RESET printed on the board above the buzzer and below the battery? There are 2 silver points in
Electronics Forum | Wed Aug 08 14:32:50 EDT 2012 | leemeyer
According to Quad data sheet, the max process temp on a ZCR oven is 310C. I am taking a guess that the "Critical Temperature" message may be Quad's way of saying that you have entered to high of a setting. Try bringing the setpoints to something belo
Electronics Forum | Tue May 16 20:36:11 EDT 2000 | Dave F
D: I�d say you�re correct about dross cleaning the sinuses, but it really get�s ya dizzy up over the long term and then it makes ya slobber. The dental floss thing is just a lyrical thing from a wasted youtt (as Danny Devito said in "My Cousin Vinn
Electronics Forum | Wed Mar 30 15:29:37 EST 2005 | Mark
I am not an expert however, I don't see any issues with this. Those joints of nearby components will melt and solidify back once they go below 183 C. Don't see how this could present quality issues as components may pass through reflow several time
Electronics Forum | Thu Feb 25 07:37:42 EST 2010 | pcbrown
We are using Humiseal 1B31 and polyester dots for masking. We are spraying this in a Binks sprayer mixed at almost 1:1 with 521 thinner. Whe are seeing the coating creating thin halos around the poly dots as if the dots are "rejecting" the coating. T
Electronics Forum | Thu Jun 05 16:44:19 EDT 2003 | blnorman
The data we have is from an IBM report. Below 100�C the SAC reliability is almost double that of SnPb (-40 to 100�C thermal cycle). When the upper end temp is increased to 125�C the reliability drops to 75% of SnPb. I'd like to see the data that s
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