The DSC6003CE2A-050.0000 is a 50 MHz MEMS-based XO from Microchip's DSC60XX series, delivering a CMOS output from a 1.71V–3.63V supply rail. The -20°C to +70°C operating range covers cabin and most under-hood environments, though not the full -40°C to +125°C of Grade 1 parts.
Microchip lists the DSC6003CE2A-050.0000 as Obsolete. If you are sustaining a production board that uses this oscillator, the ±25 ppm absolute pull range and enable/disable function are the key parameters to match in a replacement. A pin-compatible MEMS XO from the same DSC60XX family with the same 4-VDFN footprint and supply range is the most straightforward swap, but verify the frequency stability and AEC-Q grade against your application.
The 4-VDFN package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm max.