Are you sticking the thermocouple head in SAC solder? Be careful!

Once you stick the t/c in SAC solder and melt to 250C (which bwt is
above the 185C curie point) the chromel which contains 90-percent
nickel and 10-percent chromium and alumel which contains approximately
95 percent nickel, with aluminum, silicon, and manganese making up the
other 5 percent will alloy with the tin, changing the temperature
e.m.f relationship. You may not have a working thermocouple
afterwards.


On Tue, Mar 8, 2016 at 8:14 AM, Bob Wettermann <[log in to unmask]> wrote:
> Morning All:
>
> Has anyone had success in soldering Type K Thermocouples to a PCB. The
> assembly call for a SAC305 no clean alloy....
>
> There are 2 THole connections that will need to be hand-soldered as part of
> this assembly.
>
> Thanks!
>
>
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> Bob Wettermann
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-- 
Bhanu Sood
Tel: (202) 468-8449

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