Microchip lists the DSC1033CI2-050.0000T as Obsolete.
50 MHz MEMS oscillator with industrial temperature range
The MEMS resonator eliminates the start-up reliability concerns of quartz crystals in high-vibration environments. The 4-SMD, No Lead package (3.20mm x 2.50mm) is a standard footprint shared by many MEMS and quartz oscillators — a board layout designed for a 3.2x2.5mm XO will accept this part without a spin.
Standby function saves power in battery-backed designs
The 10 mA max active current is typical for a 50 MHz CMOS oscillator at 3.3V.
