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Best type of solder for audio quality - Page 2

post #16 of 24

I've got the following on my table:

RadioShack 60/40

Kester 60/40

Kester 63/37

Cardas Quad

 

Those are listed in reverse preference order.

post #17 of 24
Quote:
Originally Posted by Lil' Knight View Post

That would make more sense if you could find a PCB maker that can offer silver traces :~)


ExpressPCB's RoHS process uses 99% silver. It's still copper underneath, but it may make sense to use silver-bearing solder like the common 62-36-2 eutectic blend for such boards.

post #18 of 24

Tangent speaks the truth.

In industrial process, the boards have very thin copper

on them before they are etched. Saves on copper and time.

Then they are plated back up to whatever thickness is required.

They can be plated in any coating the customer requires; tin,

silver bearing tin, silver, gold, unobtainium (if you can afford it)

or whatever else they have up their sleeve.

Other than the copper layer, most of the more exotic stuff is

plated on after the solder mask is applied so only the exposed

pads are plated with silver, gold or unobtainium.

post #19 of 24

olso use cardas solder, never had any problems with it. Totally unaudible

post #20 of 24

 

 

wink.gif

 

post #21 of 24
I know this is an old thread but jewellers solder and solder paste seems to have the higher silver content they reckon your average silver solder paste has 5% solder content biggrin.gif
Edited by laughingbuddha - 5/1/14 at 7:05am
post #22 of 24

I have found what I think is the best non-leaded solder as it's almost as easy to work with as leaded solder. It's  "blended" and made by Sparkfun and is 96% tin, 3.0% silver, 0.5% copper, and 0.15 antimony. Best silver bearing solder I ever used. I'm not much of an electronics buff compared to the real deal but I do need to solder something once in a while and this solder is GREAT stuff! 

post #23 of 24

Yes, Sparkfun, legendary house of metallurgy. :rolleyes:

 

This is just another of a great number of lead-free solders. One that subs in toxic antimony for toxic lead, by the way.

 

I find it odd that the product page doesn't say whether the alloy is eutectic. Also, it mentions water-soluble flux as though it is purely a virtue, when in fact it's a warning sign: you must clean that sort of flux off your boards, because it is caustic.

 

(Reminds me of the "triple organic" sign I passed on the road the other day. Ooooo, that must be better than just double organic!)

post #24 of 24
Every industrial establishment that used 63/37 multicore eutectic that has been forced to abandon it did so reluctantly, because anything else is harder to use, or more expensive, or both.

The pins on modern devices are coated with such diverse metals that it is nigh on impossible to pick a flavour of solder that can be guaranteed to be long-term compatible with all. As long as the solder wets, your luck's in, because long-term means years or decades. Unless you're planning on stereo in orbit.

If you've got time to worry about this, you've got too little to think about.
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