Suspected tin whisker

Suspected tin whisker 1

A client suspected a tin whisker had grown between two IC leads.

Suspected tin whisker 2

It turns out this was a glass fiber embedded in the solder joint.

Suspected tin whisker 3

EDS analysis proves it is a SiO2-Al2O3-CaO glass fiber.

Check out SEM Lab, Inc.  to learn more.

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