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Old 4th May 2013, 01:57 PM   #1
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Default Leaded or unleaded solder ?

Hi friends,

When a given solder is available both in a leaded and in an unleaded version, what would you recommend from a sonic performance viewpoint (if somebody could assume that there is difference just with the presence or not of lead...).

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Old 4th May 2013, 03:21 PM   #2
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I wouldn't make any assumption regarding "sonic performance," but from a general quality standpoint, I'd go with leaded. There's a reason military, aerospace and medical electronics are exempt from RoHS.

se
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Old 4th May 2013, 03:29 PM   #3
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Get some SMD solder with silver, or build P2P. Only half the solder joints...
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Old 4th May 2013, 06:10 PM   #4
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Thanks Guys : I thought exactly the same...
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Old 4th May 2013, 07:02 PM   #5
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Default Solders Aint Solders....

First choice is Multicore 96s....96% Tin, 4% Silver.
Expensive, but wets very nicely and sounds really good.

Second choice is Multicore Savbit....sounds good also.

Dan.
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Old 4th May 2013, 07:16 PM   #6
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Don't understand the fondness for silver. With regard to electronics soldering such as we're talking about here, it's really nothing more than a contaminant, resulting in a poorer quality solder joint than tin/lead.

Sure, if you're sweating copper joints in a plumbing project, it's fine (don't want lead in your water supply), but I'd never use it for electronics soldering.

se
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Old 4th May 2013, 07:55 PM   #7
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Quote:
Originally Posted by Max Headroom View Post
Don't understand the fondness for lead.
The fondness is due to its ability to create a higher quality solder joint. Not to mention one that won't start sprouting tin whiskers that can cause failures.

se
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Old 4th May 2013, 07:55 PM   #8
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Default Lead Sounds Bad....

Quote:
Originally Posted by Steve Eddy View Post
Don't understand the fondness for silver. With regard to electronics soldering such as we're talking about here, it's really nothing more than a contaminant, resulting in a poorer quality solder joint than tin/lead.
On the contrary...96S wets especially well, and is better conducting than standard 60/40 lead/tin.

Quote:
Sure, if you're sweating copper joints in a plumbing project, it's fine (don't want lead in your water supply), but I'd never use it for electronics soldering.
It's worth trying. Years ago I mentioned 96S to a pro-audio colleague. When he rebuilds vintage mics, he nowadays won't use anything else. (he says better, cleaner, clearer sounding)

Ime tin/silver sounds really good, lead/tin/silver sounds really bad.

Dan.
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Old 4th May 2013, 09:07 PM   #9
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Quote:
Originally Posted by Max Headroom View Post
On the contrary...96S wets especially well, and is better conducting than standard 60/40 lead/tin.
It doesn't wet as well as 63/37 and has a rather higher melting point. And conductivity of the material doesn't matter so much as the quality of the joint itself.

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It's worth trying.
I have. Along with a dozen or so other alloys over the years. I keep coming back go Kester 63/37 with their "44" flux.

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Years ago I mentioned 96S to a pro-audio colleague. When he rebuilds vintage mics, he nowadays won't use anything else. (he says better, cleaner, clearer sounding)

Ime tin/silver sounds really good, lead/tin/silver sounds really bad.
Yeah, well some people report putting photographs of themselves in their freezers makes their system sound better. So...

se
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Old 6th May 2013, 06:57 AM   #10
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I don't like the lead free solder either. The stuff is brittle the minute it solidifies. It may wet well, but that is not the sum total of a good solder joint. SOlder that wets to the joint well, but cracks later is not a good joint. And the tin whiskers in close quarters are a genuine concern.

I also vote for leaded solder unless your local law forbids it.
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