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Soldering Techniques for Lead Attachment
to Strain Gages with Solder Dots

Solder Compatibilities

All Micro-Measurements solders are compatible with each other. Of course, if one type is incorporated in the dot and another added from wire, a mixture is produced. This new alloy cannot be expected to have melting and strength properties any better than those of the lower temperature component. In special cases of mixing +430 deg and +570 deg F (+220 deg and +300 deg C) solders, a final alloy similar to +361 deg F (+183 deg C) solder can be encountered.


The figure above illustrates a typical installation. Note that solder dot ( Option S or SE ) gages are always connected to bonded terminals for strength. Refer to Tech Tip TT-603, The Proper Use of Bondable Terminals in Strain Gage Applications , for other arrangements.

Refer to Catalog A-110 for a description of Micro-Measurements soldering supplies and accessories , and to Tech Tip TT-609, Strain Gage Soldering Techniques , for a detailed discussion on general strain gage soldering techniques.



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