Electronics Forum | Wed Jul 01 21:28:43 EDT 2020 | victorzubashev
yeap, that's probably a cheaper option. thanks for your advice!
Electronics Forum | Tue Feb 22 04:29:29 EST 2000 | Gwen Z
First I apologize for my poor English writing. we have no heat sink fins and active cooling with power module. when the board is transported,the vibration of board and power module will shotten the solder joint lifetime. if we just solder it withou
Electronics Forum | Tue Feb 22 04:29:29 EST 2000 | Gwen Z
First I apologize for my poor English writing. we have no heat sink fins and active cooling with power module. when the board is transported,the vibration of board and power module will shotten the solder joint lifetime. if we just solder it withou
Electronics Forum | Fri Jan 28 10:09:50 EST 2000 | mike d
Istvan, One possible reason for this is that you are using a water soluble flux in your wave solder machine. If you are and the boards are not pre heated long enough, the water in the flux does not evaporate before hitting the wave. When the water
Electronics Forum | Mon Dec 02 17:02:28 EST 2002 | Vince Whipple
Steve, I agree with the recommendation to check the temperature. This is the first place to go. Is this an IPA or water based Noclean? What is the topside temp of the assembly at the effected areas? If you are too cold you will have a tendency to hav
Electronics Forum | Wed Dec 04 09:24:52 EST 2002 | jseagle
I have found that preheating the solder pallets prior to use helps cut down on the solder balling. Also, we do not cool the pallets between passes and we use a spray fluxer because a hot pallet will knock down the head on a foam fluxer. We use WS f
Electronics Forum | Sun Jan 01 22:48:46 EST 2006 | Joseph
We are using selective soldering pallet, which the soldering flux is Interflux 2005M. We encountered the poor hole fill mainly at the heat sink components. Initially we tried to apply more heat but tend to overkill the flux activity. After some modif
Electronics Forum | Wed Feb 28 19:08:30 EST 2007 | Wayne
There is one solder you guy want to consider, that is SCS7 from Asahi. It is Sn Cu & Si, and it is the lowest price at the moment. We had been changing our pot from SAC, then SACX, and recently to SCS7. The result is better than all other solders. I
Electronics Forum | Mon Apr 24 15:11:11 EDT 2006 | pjc
For solder joint inspection you cannot beat AXI. That's what is was designed for. AOI machines were designed for component inspections and solder joint checking was an add-on. In transmission AXI you can get a measurement of the whole solder joint. A
Electronics Forum | Wed Apr 26 10:21:09 EDT 2006 | slaine
Hi you need to dip long enough for the temperature of the part being soldered to reach about 20 degrees above liquidus of the solder. For the small parts we dip solder we had Sn62 and SAC387 baths set to 250 degrees and this seems to work best for us
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