Electronics Forum | Thu Aug 05 17:26:21 EDT 2004 | russ
What happens to the flux and pads on the second side of a double sided board during the first reflow? It seems to me like the solder would dome and the flux would be used up and migrated to other areas. Russ
Electronics Forum | Thu Aug 05 13:33:22 EDT 2004 | davef
For the �The Chip Wave Dilemma", look here: http://www.alphametals.com/products/fluxes/PDF/dilemma1.pdf
Electronics Forum | Wed Dec 01 07:47:57 EST 2004 | jdumont
I have been seeing this with a new BGA we have just started using from IBM. Is this a problem if the solder paste is wetted to the unreflowed BGA balls??? It passed our ESS testing with no problems.... TIA JD
Electronics Forum | Tue Aug 24 16:10:27 EDT 2004 | Robert Ack
Sometimes cold solder can manifest if out of date solder paste is used. Stock rotation is one way of preventing this from happening. Also, leaving pcb's out for too long before being placed in an oven can also cause the flux to evaporate which will a
Electronics Forum | Fri Aug 13 17:53:50 EDT 2004 | masr
Any body knows where i can find some guidelines for solder paste printing or most recomended paste parameters? Thanks in advanced!
Electronics Forum | Tue Aug 17 18:33:01 EDT 2004 | Hiram
Hi everybody, We are in the process of buying a new wave solder machine. Does anybody have experience working with Vitronics-Soltec (Delta wave 6622-CC for example)? What about Electrovert (Electra)? I would appreciate your feedback. Hiram
Electronics Forum | Thu Aug 26 22:44:40 EDT 2004 | Indy
We do perform multiple reflow only for reliability testing. 90% of the time we have not seen any change in the solder joint and no change in electricals. If you do see failure you might want to see the solderability of the surface finish too.. jus
Electronics Forum | Fri Sep 03 09:09:42 EDT 2004 | John
Does anyone know how to make a thermo profile on selective machine with one solder nozzle?The problem is that there are many points and lines with different break time and different speed. Thank you
Electronics Forum | Fri Sep 10 05:49:19 EDT 2004 | bwet
Hi Rich: I am Bob Wettermann, president of BEST Inc. My info is bwet@solder.net or by phone 847-797-9250. You can see what we do on http://www.solder.net. Thanks BWET
Electronics Forum | Sun Sep 12 08:30:29 EDT 2004 | davef
Well, another alternative is to use a water washable flux. If you insist on staying with a NC flux, use one that is probable. We prefer to probe solder, rather than copper.
