Electronics Forum | Wed Dec 14 11:06:12 EST 2011 | swag
Thanks, Dave. Really good article.
Electronics Forum | Mon Sep 23 18:11:10 EDT 2002 | steveb
On an assembly reflowed in air saw the same thing: 0201's with a grainular solder joint, but 0402's and above with perfectly formed joints. Reflow profile all within acceptable tolerances. Reflowing in nitrogen solves this problem, but increases t
Electronics Forum | Wed Sep 25 10:56:27 EDT 2002 | xrayhipp
Yeah, perhaps lean more towards a ramp-to-spike profile - reducing the soak time and add a littel heat to your temp above liquid. This has worked for us with water soluable paste as we are not required to use no-clean and utilizing a 6-zone oven. G
Electronics Forum | Mon Sep 13 05:14:06 EDT 2021 | compit
A large pad nearby receives heat - the resistor pads heat up unevenly ?
Electronics Forum | Mon Sep 13 17:39:02 EDT 2021 | duchoang
Agree. The big pad and part nearby made the paste on two ends of cap melted unevenly.Deposit more paste on the tombstone-ed pad will make it easier to melt. Nothing wrong with profile if everything else is OK. BTW, how to measure temperature on two e
Electronics Forum | Tue Dec 03 20:54:57 EST 2002 | davef
Q1:A picture of the sectioned MLCC would be nice. A1: I don't think I can post pics in this (if anyone knows otherwise let me know), so I will email them to anyone who's curious. R1: You�re correct. You cannot post pix on SMTnet. Please email me t
Electronics Forum | Thu Sep 01 17:20:06 EDT 2005 | Mike
Is anyone currently mounting 0201's with the Hydra/Linescan combination with good results? We have a My series machine and are currently mounting the 0201's with high res camera. The results are good but it is painfully slow. Thanks in advance for
Electronics Forum | Fri Sep 02 10:14:18 EDT 2005 | Mity-C
Hi, We have done many 0402's with Hydra. We have done 0201's with the single head on Linescan but have yet to actually run them on Hydra. We now have a machine equipped to do this with the corresponding hydra tips. I will update as soon as I have an
Electronics Forum | Fri Sep 02 07:38:13 EDT 2005 | DannyJ
Hi Mike, I haven't tried the 0201s with a Hyrda, but after seeing 20 reviews of your message without a response, I'll try and share my experience with 0402s on a non-Hydra machine. The 0402s are slow, but I managed to get some speed by maxing out
Electronics Forum | Sat Oct 06 05:33:47 EDT 2001 | spchua
I had recently encounter the "black and grey" pads problems for the BGA pad after the convection re-flow. The pads shows in in "black and grey" color and a litter solder in it, and it happen in ramdom, when applied heat and solder on the "black and g
