What this oscillator does in the assembly
The DSC6001HI2A-025.0000 is a MEMS-based XO (Standard) delivering a 25 MHz CMOS clock from a 1.71V to 3.63V supply rail — the wide voltage range lets it run on a 1.8V, 2.5V, or 3.3V domain without a separate regulator.
Lifecycle reality — obsolete, sourced to order
This part is marked Obsolete — Microchip no longer manufactures it. For new designs or long-term production, a pin-compatible replacement within the DSC60XX family should be evaluated — the MEMS resonator and 4-SMD footprint are common across the series.
4-SMD, No Lead package measuring 1.60mm x 1.20mm with a seated height of 0.89mm — this is the standard 1.6 x 1.2 mm MEMS oscillator footprint. The no-lead land pattern requires a stencil aperture matched to the pad size for reliable solder joint formation. Surface-mount assembly — the small package suits space-constrained automotive PCBs, but the 0.89mm height means the oscillator sits low enough to fit under a conformal coating or potting compound.