This is the FC-13 A, a tuning fork crystal with guaranteed operation in the temperature range of -40 to +125 °C, primarily intended for the automotive sector.
The FC-13 A has an output frequency of 32.768 kHz and measures 3.2 mm x 1.5 mm with a maximum thickness of 0.9 mm. Its frequency tolerance is +/-20 x 10⁻⁶ (at 25 °C).
It complies with AEC-Q200, RoHS, and ELV directives.