Electronics Forum | Mon Mar 24 00:54:49 EDT 2014 | isd_jwendell
Don't do that! When solder paste dries out, all parts of the flux do not leave. The volatiles leave. Adding new flux messes with the chemistry and %metals and will not perform like new paste. If you can, get your paste in cartridges. It will last lo
Electronics Forum | Fri Mar 17 07:42:51 EST 2006 | vicknesh28
Copper is the base material for the lead. It's tin/lead plated. I finally got profile. Here are the parameters" Peak : 219 Max (+) Slope : 2.29 Max (-) Slope : -1.94 Time above 200 deg. C : 50s Time 140C - 160C : 126s Additional info : Stencil thic
Electronics Forum | Tue Jan 02 08:11:21 EST 2007 | Rob
Try using a solder like S03X7C from Koki, which uses cobalt to prolong the tip life & also a wire wool type dry wipe instead of a wet sponge.
Electronics Forum | Fri Feb 28 14:53:08 EST 2020 | rlising
Hi, I purchase a leadfree aven solder pot 300w. We are wanting to pre tin power and ground wires prior to soldering onto pcb. I have some anti-erosion flux cored wire solder from koki S03x7Ca-70m 1.6mm. Can this solder be used? If not what is t
Electronics Forum | Tue Mar 25 02:58:24 EDT 2014 | molder
ok.. thanks you so much.. I will buy new dispenser siringe, and I try to rework... I have a questions on desolder and solder a socket 1366 intel on motherboard. I have a rework station Honton hot air and tornado infrared, but i don't know a temperatu
Electronics Forum | Fri May 12 08:50:40 EDT 2006 | Rob
Just come back from Nepcon (electronics show on an obscure little island on the other side of the pond) and had a good chance to look & play with a whole bunch of solder wire. Koki do one that is aprox. 99/0.7/0.3 with 0.03 Cobolt in. They claim th
Electronics Forum | Tue Dec 04 14:16:32 EST 2012 | eniac
AIM can give a good result, I tried the solder paste from many manufacturer - AIM, Kester, Indium, Koki, Alpha Metals, Heraeus - but I stopped my choice at Kester. For example, right now I have EM907 with date of manufacture in february 2010 (it's ju
Electronics Forum | Thu Sep 07 08:50:45 EDT 2006 | Grant
Hi, We have seen a slight rise in failures in a product, and on investigation, the BGA ball has cracked off the PCB. It's below the intermetalic layer in the ball. Reflow otherwise looks good, and the raw components are clean. I am wondering what c
Electronics Forum | Thu Mar 15 06:26:26 EST 2001 | Sal
Sorry for the lack of information provided, I'll try again : Test Points are the one's that are not soldering. The test points are round in geometry, 0.5MM(metric) in diameter with a HASL finish.The test point are no different to the ed through hole
Electronics Forum | Mon May 05 11:35:00 EDT 2003 | Grant
Hi, This is an interesting point. I use Koki paste from Japan, and it's wonderful, however what properties of solder paste would make it "anti tombstone" paste? How does led free effect tomb-stoning? That would be interesting to know. We might go
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