MEMS oscillator at 48.461 MHz — CMOS output, standby function
The DSC1033BI1-048.4610 is a MEMS-based XO (Standard) oscillator from Microchip's PureSilicon™ series, delivering a 48.461 MHz CMOS output from a 3.3V supply rail.
Microchip lists the DSC1033BI1-048.4610 as Obsolete. A board-level redesign to a current MEMS oscillator family (e.g., DSC1001 or DSC1121 series) may be the more sustainable path for new production.
Temperature range and package — board-fit note
The 4-SMD, No Lead package (5.00 mm × 3.20 mm footprint, 0.90 mm seated height) is a standard surface-mount form factor; the PCB land pattern matches common MEMS oscillator layouts, so a replacement from another vendor with the same package outline can drop in without board changes.