Electronics Forum | Thu Dec 01 05:23:55 EST 2016 | stivais
Rob Just wondering - have you made analysis of your solder alloy on a regular basis? We are using SAC305 but stainless steel parts (e.g. a nut or a washer) dissolve quite quickly.
Electronics Forum | Fri Apr 21 14:58:04 EDT 2023 | rgduval
I mean...there are a ton of possibilities for bridging on selective solder before you ever get to alloy purity. Are the bridges happening consistently in the same spot? Are the leads too long? Can you modify the approach/exit/peel off to address? Wh
Electronics Forum | Sun Sep 15 09:13:41 EDT 2002 | davef
A near eutechtic alloy [ie, 63/37, 62/36/2, etc] would be fine. People print, place, and reflow millions of cermaic capacitors with these alloys every day.
Electronics Forum | Fri Dec 12 11:52:59 EST 2003 | Marc Simmel
I have encountered problems with a 90/10 tin-lead plated SMT component wicking all the solder paste off the pads on the substrate. Worst, the defect occurs randomly - adjacent leads may have 'good' joints, though heel fillets are poor. The solder pa
Electronics Forum | Fri Apr 21 22:13:14 EDT 2023 | jamesatqkits
It is pretty high, I will have to try it with no exhaust, thanks for the idea. Have a great weekend. I should also mention someone that knows metal alloys told me that that much extra Nickle can cause the melt point to go up. Does anyone run hotter t
Electronics Forum | Wed Nov 20 09:27:28 EST 2002 | davef
There's a fair number of issues with lead and bismuth solder alloys: * Lead and bismuth alloys can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. Melting point of the eutectic alloy is 95�C [~96�C?]. * Fillet lifting of PTH du
Electronics Forum | Thu Mar 20 09:01:33 EDT 2008 | meritajs
Thanks Greg Our main problem is that we are putting small number PCB through, about300 PCB, size180*250. Such number order our customer in week. In result we got such high solder consumption and high production cost. We will tray to use antiacidant.
Electronics Forum | Fri Mar 21 08:39:38 EDT 2008 | lococost
If you are saying you're going through 1kg/h while only producing 300 pcbs a week and the rest of the time the machine is standing still, then 1.there is something seriously wrong with your machine or 2. check if an operator is suddenly covered in sh
Electronics Forum | Thu Jul 01 17:35:30 EDT 2004 | Sofia
Hi Everyone, I am just curious, is there a guidline that people follow for choosing their lead-free solder paste? In other words, how do people know whether they should use Indium alloy, or Castin (Sn/Ag/Cu), or whatever else? Thanks
Electronics Forum | Fri Jul 02 17:05:26 EDT 2004 | blnorman
Depends on your specific application. Can you handle lower reflow temps? Can your parts handle higher reflow temps? What environment will your assembled product have to endure? Lot of different factors come in to play when choosing the right allo
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