Electronics Forum | Thu May 18 03:36:38 EDT 2006 | Grant
Hi, We are about to change our wave over to lead free solder, and it's a Soltec Deltawave, which uses about 750 KG of solder. Our supplier is recommending we change the bath over, however that seems a bit extreme. They are concerned we won't get ri
Electronics Forum | Thu May 18 16:10:18 EDT 2006 | adlsmt
We did a tin bath on ours but it was provided for free by Nihon Superior so that is a no-brainer. It was better than taking a risk of having to dump the pot. If you cant get a free tin bath, then you should probably go ahead and fill it half way or s
Electronics Forum | Wed Aug 10 13:31:05 EDT 2005 | patrickbruneel
Joseph, In addition to my previous post The reason why the cracks are most visible at the transformer location is due to the weight of the transformer. The stress on the boards is the highest because the weight of the transformer will warp the board
Electronics Forum | Thu May 18 16:27:53 EDT 2006 | bman
I don't have any experinence with this, but my concern is that you are limiting the amount of contamination your pot can absorb before you ever run a board through. What I mean is that even if you are able to drain all but about a kg of the old sold
Electronics Forum | Wed Aug 10 09:01:15 EDT 2005 | fctassembly
Hello Joseph, Sorry for the bad news but microcracking is a well known potential condition occuring with the SAC305 alloy. Microcracking is a condition being seen with many joints soldered with the SAC305 alloy. It is technically a shrinkage cavity
Electronics Forum | Mon Jul 16 10:17:22 EDT 2007 | realchunks
Yes you can use no-lead parts in a leaded process. Your solder joints will be weaker than they once were unless you change your solder paste. You can try to improve this by running a hotter reflow temp, but be careful since your flux was not design
Electronics Forum | Thu Jul 19 11:59:21 EDT 2007 | hussman
Phil is wrong. In the real world, we know that part mfgers have not changed every one of their parts to make them "high temp". They just changed the plating. Anyone who thinks otherwise, has never run a profile or touched a warm board coming out o
Electronics Forum | Wed Nov 02 12:08:40 EST 2005 | chunks
It could be lack of preheat or flux. You can verify the flux by hand applying. I'll bet it's lack of preheat though. That's usually the case with selective solder.
Electronics Forum | Thu Nov 03 09:43:55 EST 2005 | lupo
Check flux penetration and type of flux. How much is solid contents. The solder filling is better under Nitrogen. Check the time (speed) of the nozzle whether is correct. Usually For SAC305 the temperature of bath is 320C/degrees, but only for sel
Electronics Forum | Sat May 28 06:43:03 EDT 2005 | steve
I have the ability to offer both SAC and SN100C lead free alloys to my customer base. What might occur if a customer is already using SAC305 in their wave and they want to save money and go to SN100C. They now are mixing, tin,silver,copper with tin,c
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