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Old 15th January 2011, 03:40 PM   #1
tchiwam is offline tchiwam  Finland
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Default Sn/Pb S-Sn/Cu ...

What is you opinion on using Sn/Cu instead of Sn/Pb. I am used to make my stuff with high temp Sn/Pb for automotive and transmitter stuff. But what about life without Pb ?
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Old 15th January 2011, 07:42 PM   #2
el156 is offline el156  Portugal
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Quote:
Originally Posted by tchiwam View Post
What is you opinion on using Sn/Cu instead of Sn/Pb. I am used to make my stuff with high temp Sn/Pb for automotive and transmitter stuff. But what about life without Pb ?
I much prefer to use Sn/Pb , but this days everything seems to be Pb free.....
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Old 16th January 2011, 08:29 AM   #3
M Gregg is offline M Gregg  United Kingdom
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Just for interest,

I try to keep clear of Pb for HIFI.

Cardas`s quad eutectic solder

HIFI collective!



Regards
M. Gregg
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Old 16th January 2011, 08:46 AM   #4
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In my experience the lead free stuff is awful to use compared to the good old 60/40 Sn/Pb stuff - it just doesn't 'flow' the same way. And flux-free is practically unusable if you ask me. For a while I thought I would have to stock up on the old lead stuff, but it is still readily-available - which may tell us something.
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Old 16th January 2011, 01:39 PM   #5
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Default leaded vs unleaded

Quote:
Originally Posted by M Gregg View Post
Just for interest,

I try to keep clear of Pb for HIFI.

Cardas`s quad eutectic solder

HIFI collective!



Regards
M. Gregg

Umm........Cardas Quad eutectic solder has lead in it. The Cardas lead-free stuff is tri eutectic.

I also use Cardas quad eutectic, solders like butter.
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Old 16th January 2011, 02:08 PM   #6
M Gregg is offline M Gregg  United Kingdom
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Quote:
Originally Posted by boywonder View Post
Umm........Cardas Quad eutectic solder has lead in it. The Cardas lead-free stuff is tri eutectic.

I also use Cardas quad eutectic, solders like butter.

Hi,

Yes it has lead in it. The OP was asking about Pb solders and availability.

I use silver type solders, however the melting point is higher. The Cardas quad eutectic is the closest I can find to the same melt "wetting" as Audio note solder.
We are back to the discussion on metals and conduction / quality of joint ect. The tip of the soldering iron does not last long with Silver "no lead" solder.

Have you tried using other solders and had any sonic differences?

Just for interest,
If you look at how much solder you use in a project and the length of what you have used it is quite a lot in the conduction path!
It is in every connection.

Regards
M. Gregg
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What is the sound of one hand clapping?

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Old 16th January 2011, 04:15 PM   #7
el156 is offline el156  Portugal
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Together with a 60/40 solder , i also use resin (soldering paste),and it makes a very nice joint.and looks nice!
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Old 16th January 2011, 07:39 PM   #8
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I included non-rohs leaded multicore solder in my last order from Farnell ( about 6months ago) and had no trouble getting it.

I believe the nuclear power industry has a special dispensation to continue to use leaded solder on circuit boards as it has a proven 50 year+ track record of reliability. Lead free solder has a few years to go to equal that.

While demand remains for leaded solder, manufacturers I'm sure will supply.
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Old 16th January 2011, 09:39 PM   #9
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Hello,
I believe there is a conspiracy to keep mother earth green!
The half life of consumer electronics is short so it does not take very long for the latest DVD player to end up as e-waste. That is the bulk of the thinking.
Vermont and California have outlawed anything more than 0.25% Pb in plumbing fixtures (pun intended); the US has outlawed lead in plumbing fixtures in 36 months. Just try to solder lead free valves (plumbing) with earth friendly lead free solder. The failure rate is high; the solder does not wet, capillary action is on vacation.
Buy up eutectic Pb/Sn solder for personal DIY use while you can.
DT
All just for fun!
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Old 17th January 2011, 11:23 AM   #10
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hey-Hey!!!,
I've found the most critical thing to be flux. I like the Kester 44 rosin and it happens to smell good too...
cheers,
Douglas
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