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Old 20th January 2011, 03:40 PM   #31
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Quote:
Originally Posted by Bandersnatch View Post
Solder giving 101%....
cheers,
Douglas
As usual, 5 years' plan in 3 years.
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Old 20th January 2011, 04:08 PM   #32
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by suntechnik View Post
I am using leaded WBT 4% silver - excellent stuff
WBT 4% SILVER SOLDER (Lead based)
I cannot see any reference to eutectic solder in that WBT advertisement.
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Old 20th January 2011, 07:30 PM   #33
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Cardas Quad-Eutectic was mentioned earlier
http://www.partsconnexion.com/product7440.html
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Old 20th January 2011, 08:35 PM   #34
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by suntechnik View Post
Cardas Quad-Eutectic was mentioned earlier
http://www.partsconnexion.com/product7440.html

great stuff, particularly if you can still get the Quad version; does include lead, but very nice to work with
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Old 20th January 2011, 09:37 PM   #35
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I like WBT very much. I am not sure how it is close to eutectic point, but must be somewhere close because melts smoothly, wets soldering surfaces nicely, provides reliable and good looking joints. A pleasure to work with.
Drawback is it's price but hobby is an expense anyway :-)
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Old 21st January 2011, 11:32 AM   #36
marce is offline marce  United Kingdom
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Multicore do a tin lead silver copper based solder called SAVBIT, the copper was added to stop the copper soldering iron bits disolving.
Also US patent 4938924 may be of interest.
Sorry but I am cynical about audiophile solder etc, this being such a critical process in ALL manufactured electronics, there is a heap of research done out there regarding soldering and how it works. If you dont solder your products correctly its game over for a manufacturing company.
Got to addmit though the Cardas marketing was a jolly hoot.
From experience the eutectic mixtures with lead are the best for reliability, ease of soldering etc, we use them here at work with no problems.
Nassa are currently doing long term reliability work on the lead free solders, but high rel inductries (mil/aero/medical) wont be moving over for a while.
For the record the amount of lead that was used in electronics was in the bottom 1% of world wide lead usage (before ROHS), of course now with lead free solder energy consumption has increased to cope with the increased soldering temeratures.
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Old 21st January 2011, 08:34 PM   #37
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Speaking of solder products from Multicore, have always had very good results with Multicore Crystal Flux 511, has worked well with everything from SMD pcb rework (only older leaded boards!) to p-p wiring in the tube amps. Wets and flows well, tolerant of imperfectly clean surfaces, not excessive residue.
And for those that want to go lead free, Senju Metal Products in Japan make "Sparkle" 3% silver lead free solder that actually tins and flows well - use this at work as pretty much everything there is now lead free.
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