The DSC1018BE1-050.0000 is a MEMS-based XO (Standard) from Microchip's DSC1018 series, delivering a fixed 50 MHz CMOS output from a 1.8V supply rail. The 4-SMD no-lead package (5.00mm x 3.20mm footprint, 0.90mm seated height) fits standard oscillator land patterns — no layout change from a quartz XO of the same size.
Power budget and standby behaviour
Typical supply current is 4 mA while oscillating — the 1.8V rail sees roughly 7.2 mW load from the oscillator alone. When the Standby (Power Down) pin is asserted, the oscillator draws 1 µA maximum, cutting the clock tree's idle power to near-zero. A battery-powered sensor that sleeps 99% of the time and wakes to a 50 MHz host MCU can leave the oscillator enabled only during the active window, saving the 4 mA draw across the sleep interval.