The DSC1121DM2-025.0000B: That temperature grade puts it into avionics black boxes, downhole logging tools, and satellite telemetry boards where a quartz can fails from thermal shock or vibration. The MEMS resonator itself is inherently more rugged than a quartz blank; it survives 50,000 g shock and 70 g vibration without frequency shift, which is why you see these in engine-mounted controllers and gun-hardened electronics.
The 6-VDFN package (2.50 mm x 2.00 mm, 0.90 mm seated height) is a standard MEMS oscillator footprint; the ±25 ppm frequency stability covers most Ethernet, USB, and general-purpose clocking needs without a trim capacitor.