AEC-Q100 qualified MEMS oscillator — why it fits an automotive clock tree
Unlike a quartz crystal oscillator, the MEMS resonator is less sensitive to vibration and shock, which matters in an engine bay or chassis-mounted module where mechanical stress can pull a quartz crystal off frequency.
A single oscillator BOM line can serve a 3.3V MCU core clock and a 1.8V peripheral bus on the same board, reducing line-item count and qualification overhead.
Standby power-down — cutting clock current to 15 µA
In a battery-backed telematics unit that wakes periodically to transmit, this standby current is orders of magnitude below the module's sleep-mode budget — the oscillator is not the leak.
Active production — sourcing posture for this oscillator
For a production BOM that already qualifies this order code, the design is stable — no migration needed.