The DSC1101BI1-125.0037T is a MEMS-based XO (Standard) from Microchip's DSC1101 series, delivering a fixed 125.0037 MHz CMOS output. It operates from a single 2.25V to 3.6V supply, so it runs directly off a 2.5V or 3.3V rail without a separate LDO.
Industrial temperature and frequency stability
Frequency stability is ±50 ppm, which keeps the 125.0037 MHz clock within 6.25 kHz of nominal across temperature and aging — tight enough for most 1000BASE-T or SGMII reference clocks. The 6-VDFN package measures 5.00 mm x 3.20 mm with a seated height of 0.90 mm — a compact footprint that fits dense PCB layouts.