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Electronics Forum: when to retire (Page 6 of 60)

does copper wire become thinner when it dip to leadfree solder?

Electronics Forum | Wed Nov 02 03:35:09 EST 2005 | Slaine

I thought it was the tin content that leached the copper so presumed 100Sn would be more aggressive?

does copper wire become thinner when it dip to leadfree solder?

Electronics Forum | Thu Nov 03 04:31:21 EST 2005 | arnold

davef, how can you convince me that 100Sn dissolved copper much faster?

does copper wire become thinner when it dip to leadfree solder?

Electronics Forum | Thu Nov 03 07:22:16 EST 2005 | davef

arnold: I did not say that Sn100 dissolved copper faster. The graph of dissolution rates [from the link above] shows that Sn100 dissolves copper slower than many of the other solders.

does copper wire become thinner when it dip to leadfree solder?

Electronics Forum | Thu Nov 03 13:35:46 EST 2005 | Amol

the copper forms intermetallics with tin to get Cu3Sn and Cu6Sn5. thus intermetallics formation consumes Cu and depends upon the cooling rate, faster the cooling rate, lesser the intermetallic formation

can silver plating be used as barrier when soldering brass to copper? silver plate the brass?

Electronics Forum | Thu Jun 08 18:19:40 EDT 2017 | edhare

Jeff, You might look at this paper, which has some background & references that are relevant to your question ... http://www.semlab.com/papers/diffusionbarrierplatinginelectronics.pdf Ed Hare

Question of which bread pan to use when draining the wave solder pot?

Electronics Forum | Tue Oct 06 16:14:42 EDT 2020 | rieko

Thank you! Have a great day. I think we will try bread loaf pans and pyrex. Have a great day!:)

Question of which bread pan to use when draining the wave solder pot?

Electronics Forum | Wed Oct 07 07:21:41 EDT 2020 | relaycz

For lead-free, we had great success with graphite molds from China. As far as I remember, it was about 10$ a piece. Very easy to pop them out too.

Question of which bread pan to use when draining the wave solder pot?

Electronics Forum | Wed Oct 07 11:38:17 EDT 2020 | rieko

We are draining a leaded solder pot. I'm sure these would work with leaded as well. those look beautiful!

Question of which bread pan to use when draining the wave solder pot?

Electronics Forum | Wed Oct 07 13:30:57 EDT 2020 | davef

I have great memories [bad dreams??] of draining solder pots. Previous discussions on SMTnet are worthy of review. Some are here: https://smtnet.com/index.cfm?fuseaction=search_submit&searchstring=bread+pan&collection=site_forum

Question of which bread pan to use when draining the wave solder pot?

Electronics Forum | Wed Oct 07 13:36:11 EDT 2020 | rieko

I tried to reply to your response, but the site locked the discussion? You gave the information on the bread pans. I was wondering a teflon bread loaf pan would work for SAC?

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