What the AEC-Q100 rating means for board placement
The DSC1001CI1-025.0000T: The MEMS base resonator replaces a quartz crystal — no crystal load capacitors, no startup trade-off between drive level and oscillation margin. The die is silicon, not quartz, so the frequency vs temperature curve is flat across the industrial band without the turnover-point sensitivity of an AT-cut crystal.
Supply voltage and standby — one rail, one pin
Supply range 1.8 V to 3.3 V covers the three common logic rails — no separate regulator for 1.8 V or 2.5 V domains. The same part serves a 3.3 V CAN transceiver clock and a 1.8 V MCU core clock on the same BOM line. For a battery-backed ECU that sleeps 99 % of the time, the 15 µA leakage is below the sleep-mode budget of a typical SBC.
Active lifecycle — no redesign clock ticking
The part can be designed in today without a forced obsolescence migration mid-production. The base product number DSC1001 covers a family of pin-compatible MEMS oscillators; if a different frequency is needed later, the same footprint and supply rails apply.