What the AEC-Q100 rating means for your BOM
For a BOM that already specifies AEC-Q100 for other ICs, this part keeps the qualification consistent across the clock tree. If your application runs at 105°C ambient, this part is not rated for that — you would need the extended-temperature variant in the DSC1121 family.
MEMS resonator vs quartz — what changes on the board
That means no load-capacitance matching, no start-up time uncertainty, and no drive-level sensitivity — the oscillator starts in microseconds and holds frequency across vibration and supply ripple. For a replacement of a standard 8 MHz quartz oscillator, the DSC1121BI2-008.0000T is a direct drop-in: same 8 MHz CMOS output, same 2.25V to 3.6V supply range, same 6-VDFN footprint. A typical quartz XO at this price point might spec ±50 ppm or ±100 ppm; the MEMS part holds tighter without external trimming.