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What solder do you guys use?
What solder do you guys use?
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Old 19th July 2006, 11:03 PM   #1
excetara2 is offline excetara2  United States
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Default What solder do you guys use?

I am just wondering what solder you use. If you use silver added solder, or if you just go for generic 60% tin / 40% lead or 60% lead / 40% tin.
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Old 20th July 2006, 05:24 AM   #2
poobah is offline poobah  United States
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63% Lead - 37% Tin... more cooperative.



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Old 20th July 2006, 06:28 AM   #3
moray james is offline moray james  Canada
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Default solder

Wonder Solder Ultra Clear11 excellent to work with sounds very good. Regards Moray James.
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Old 20th July 2006, 06:48 AM   #4
BWRX is offline BWRX  United States
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Kester "44" 60Sn40Pb or 63Sn37Pb rosin core. The also make a variant with some silver.
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Old 20th July 2006, 06:49 AM   #5
Christer is offline Christer  Sweden
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First, you want a eutetic solder, ie. a solder where the phase transition between liquid an solid state is practically immediate. For a non-eutetic solder this takes place over a temperature interval and thus takes some time to happen. During this transition phase the joint is very sensitive to vibrations which may cause a cold joint. The ordinary 63SN/37Pb solder is eutetic with an almost immediate transition at 183 deg. C, while the 60Sn/40Pb is not eutetic, having a phase transition starting already at 190 deg C and ending at 183 deg C. There are also some lead free solders that are eutetic. Here is a table of temperatures for some alloys, although most of these seem not intended for electronics:
http://www.lucasmilhaupt.com/htmdocs...s/solders.html

One example of a lead free eutetic alloy for electronics with a reasonably low melting temperature is 96.5Sn/3.8Ag/0.7Cu which melts at 217 deg C.
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Old 20th July 2006, 07:28 AM   #6
excetara2 is offline excetara2  United States
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Thanks Christer fo the wealth of information. I will look for Eutetic solder. I believe that Wonder solder is Eutetic. I may look into that. Or try to find something else that is Eutetic but a little bit cheaper than the Wonder Solder. Thanks a lot.

-Jeff
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Old 20th July 2006, 05:22 PM   #7
maxlorenz is offline maxlorenz  Chile
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Hi excetara2,
Cardas eutectic sounds good but was a little difficult for me to use. Wonder solder is eutectic and a lot easier to use, sounds good and also smells good (though the best smell is from Welborne labs' solder) ... an addiction to die for...

Regards
M
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Old 20th July 2006, 08:29 PM   #8
cpemma is offline cpemma  United Kingdom
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Quote:
Originally posted by Christer
The ordinary 63SN/37Pb solder is eutetic with an almost immediate transition at 183 deg. C, while the 60Sn/40Pb is not eutetic, having a phase transition starting already at 190 deg C and ending at 183 deg C.
All correct (says me with a degree in metallurgy) but the 60%Tin 40% Lead mix isn't too bad for electronics, it's the 60% Lead 40% Tin alloy that should never be used. That has a very wide "mud" range, it's made for plumbing where a joint between two lead pipes (or lead pipe to copper) can be wiped to a neat shape while still a liquid + solid sludge. A near-forgotten art.

Apart from that, the multicore version contains an aggressive flux not suitable for electronics.
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Old 20th July 2006, 08:42 PM   #9
SY is offline SY  United States
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What solder do you guys use?
Eutectic 63/37 for tinned or copper wires, 4% Ag-bearing solder for silver wire or silver terminal strips (e.g., Tek). I've tried to lay in a lifetime supply before the EU bureaucratic nonsense destroys what's left of diy electronics as a hobby.
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Old 20th July 2006, 08:52 PM   #10
FastEddy is offline FastEddy  United States
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Default Silver solder all the way ...

any commercially available silver alloy solder ... is better than the best lead based stuff.

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