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Pb solder wire : Sn60/Pb40 or Sn63/Pb37 ?

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mariush:

--- Quote from: coromonadalix on February 01, 2023, 11:23:15 am ---when you pay 250$ cad for 1 pound of 63/37   rozin core   0.010 size     you'll understand  loll


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Google says $107 (rosin rma) : https://www.testequity.com/product/488SO756-24-6337-9756
Digikey has it for $115 : https://www.digikey.com/en/products/detail/kester-solder/24-6337-9756/7565078

New old stock but with no-clean flux is  available on ebay for 35$ each (made in 2019, with "expiry date" in 2022) : https://www.ebay.com/itm/234588780062

Gyro:

--- Quote from: TimFox on January 31, 2023, 11:01:09 pm ---The silver-bearing solder is mandatory for old Tektronix scopes, which used silver-metallized ceramic terminal strips.  Without silver in the solder alloy, the silver would leach from the ceramic surface into the molten solder and damage the terminals.

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A quick snap as I'm right in the middle of repairing my 475A (it only has ceramic strips in the HT section) :D ...

Haenk:
That ebay offer seems good.
That exp date is just for the books (and for industrial/commercial use). It will likely be fine for another couple of decades.

tooki:

--- Quote from: coromonadalix on February 01, 2023, 11:23:15 am ---when you pay 250$ cad for 1 pound of 63/37   rozin core   0.010 size     you'll understand  loll

pricing as gone bezerk   |O

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Super thin solder has always been expensive. The cost there is the labor, not the materials, so there will be practically no difference between 63/37 and 60/40.

Solder that thin is also something almost no hobbyist needs.

Normal thicknesses are around $50/lb, which I think is just fine. You can find it for $35 by shipping around.

exe:

--- Quote from: tooki on February 01, 2023, 07:50:12 am ---The quality of the solder (purity of the alloy, quality of the flux) matters more than whether it’s 63/37, 60/40, or 62/36/2.

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+1 to that, on https://www.youtube.com/@RusFluxInfo (in Russian) a lot of solders were tested for their content and many had a lot of impurity, or tin content was lower than advertised (because it's more expensive than Pb). So, I'd say buying a quality solder is more important than chasing that 63/37 vs 60/40.

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