Low temp Lead Solder Paste

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Dear All, I´m looking for a low temp solder paste with Lead.... - Nov 25, 2011 by Fco Teixeira

Sn43/Pb43/Bi14 is a low temperature leaded alloy that has be... - Nov 25, 2011 by davef

Fco Teixeira

#65525

Low temp Lead Solder Paste | 25 November, 2011

Dear All, I´m looking for a low temp solder paste with Lead. I know that, with lead free, is common solder paste with bismuth for low temp in Pin in Paste line, but one customer aks me about low temp solder paste with lead. If anybody knows about and can help. Thanks in advance for all.

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davef

#65527

Low temp Lead Solder Paste | 25 November, 2011

Sn43/Pb43/Bi14 is a low temperature leaded alloy that has been used with very good success. The low melting point helps avoid some thermal shock issues on some assemblies. A word of caution, this alloy forms a low melting point at approximately 95*C. This causes the solder joints to fall apart with products that have an operating temperature near that temperature. Take a look at your customer's product in its end-use environment with the temperature excursions in mind to see if they will or will not have problems. We recommend that you set up a specific soldering process around the alloy to prevent it from accidentally "migrating" to other areas of the manufacturing process.

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