Package and board-fit
The DSC6101JI2A-050.0000T: The surface-mount package is reworkable with standard hot-air profiles — the MEMS die inside handles the thermal cycle better than a quartz crystal, so you can reflow it without worrying about frequency shift from mechanical stress.
Sourcing reality for an obsolete MEMS oscillator
For existing BOM lines that require this exact 50 MHz, AEC-Q100, CMOS-output oscillator, independent distribution channels hold surplus inventory. A pin-compatible functional replacement from the same DSC61XX family may exist if the frequency, stability, and AEC-Q grade match — but no official cross-reference is published. A parametric search against the 4-SMD footprint, 1.8-3.3V supply, and ±25 ppm stability is the practical path for a new-design substitution.