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Old 17th January 2013, 12:25 PM   #71
marce is offline marce  United Kingdom
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WOW, so now we have to worry about the solder in the solder joint!!!!
Two thoughts,
any measurements of this great improvement in sound quality?
And why in other fields of very sensetive analogue design (say medical, or the odd hadron colider) do they not worry about the solder used, but do insist that joints are workmanship are produced to IPC-610 Class 3 standard.
Just for interest, soldering and the standards of solder joints, the solder itself etc are covered by the IPC (as are all aspects of electronic assembly from the PCB design to washing the finished assembly).
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Old 17th January 2013, 12:33 PM   #72
marce is offline marce  United Kingdom
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Er since when did the metal in solder affect the connection speed of a signal, or for that matter the wire or trace its running down, be it silver or copper, its resistance that changes not signal transmission speed.
Now without going to deeply into solder joints, if you look at the structure of a solder joint you will find that there are various regions of intemettalic layers, that are critical to the construction of a good reliable solder joint, these are performed by using the correct soldering technique, flux and soldering iron/ reflowoven, wave solder temperature.

Last edited by marce; 17th January 2013 at 12:37 PM.
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Old 17th January 2013, 12:48 PM   #73
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by zeppy2033 View Post
tinitus,

explain your reasons datailed, as I did.
why should I ?... noone listens anyway

meaning, noone are interested to hear about the sound of solder
but there is a general interest in what kind of solder gives the best soldering

and my suggestion is that it depends on the job, and your soldering skill level...and your tools ofcourse(iron/tips)
or in other words...whatever gets the job done

so if silver content improves the quality of lead free, then only because it improves the soldering quality
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Old 17th January 2013, 12:58 PM   #74
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Quote:
Originally Posted by zeppy2033 View Post
In addition and in pro of silver solder,

Clearly the reason of a better sound after re-solder with Sn97% Ag3% lies in the presence of silver in the solder alloy, providing a faster conduction, which in most cases result in an equivalent to a direct connection between the termineals of the components involved, resulting this welds as a single piece, rather than a sum of delays caused by each weld made with 60/40 standard solder, as the case of several elements in series present in a given audio path.
Clearly .....

It is your right to give your subjective opinion on how 1 mm or less of 2% silver "improves" the sound, but please abstain from such nonsensical techno-babble!

It does nothing for your credibility.
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Old 17th January 2013, 01:06 PM   #75
tinitus is offline tinitus  Europe
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just bought 100gr 1mm German Felder lead free Sn95,5Ag3,8Cu0,7 to test it
95% tin, 3.8% silver, and 0.7% copper, 2.5% Flux
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Old 17th January 2013, 01:06 PM   #76
SY is offline SY  United States
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Quote:
Originally Posted by zeppy2033 View Post
Clearly the reason of a better sound after re-solder with Sn97% Ag3% lies in the presence of silver in the solder alloy, providing a faster conduction, which in most cases result in an equivalent to a direct connection between the termineals of the components involved, resulting this welds as a single piece, rather than a sum of delays caused by each weld made with 60/40 standard solder, as the case of several elements in series present in a given audio path.
How does a television or computer work?
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Old 17th January 2013, 01:13 PM   #77
marce is offline marce  United Kingdom
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1mm would be a big joint, PTH hole to pin is usually 0.1/0.2mm larger to get a some mechanical support and optimise the solder joint.
Some stuff on intermetallics it very exciting ! well to some of us who have to worry about such things...
http://www.solderingtech.com/article...rmetallics.pdf

http://www.fujielectric.co.jp/about/...LeadFree07.pdf

Televisions, computers etc. are not really high end audio devices, so have to follow the rules of physics etc.

Last edited by marce; 17th January 2013 at 01:19 PM.
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Old 17th January 2013, 01:42 PM   #78
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Thanks tinitus for your data, I really appreciate that.

Sy, television or computer will work better (more audio/video quality or fastest process) with 97Sn 3Ag applied in proper points, no doubt. With standard 60/40, just works.

Definitely we are speaking about different subjects here, and/or different goals to achieve.
Besides, I just tried to advise for a method to improve the sound quality of your gear, and, IMO, only for some weird reason some members want to defeat my point. What a shame.
At last: maybe Van Den Hul is wrong?
That's all.

Last edited by zeppy2033; 17th January 2013 at 02:07 PM.
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Old 17th January 2013, 01:46 PM   #79
qusp is offline qusp  Australia
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zeppy, nothing travels 'faster' in silver solder
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Old 17th January 2013, 02:05 PM   #80
SY is offline SY  United States
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Quote:
Originally Posted by zeppy2033 View Post
Sy, television or computer will work better (more audio/video quality or fastest process) with 97Sn 3Ag applied in proper points, no doubt.
Can you cite some data?
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