The DSC1001BI1-004.0000: AEC-Q100 qualification places this part in the automotive-grade band — it is rated for the thermal and reliability stresses of under-hood and chassis-domain electronics, not just cabin infotainment.
Maximum supply current is 6.3 mA; at 4 MHz the dynamic draw is modest, but the 6.3 mA ceiling is the figure to budget for the worst-case corner (low voltage, high temperature, full load).
Housed in a 5.00 mm × 3.20 mm no-lead package with a 0.90 mm seated height — the footprint matches many quartz XO land patterns, easing a drop-in swap from crystal to MEMS. Surface-mount assembly; the no-lead construction keeps the parasitic inductance low, which matters for the CMOS output edge rates at 4 MHz.