The DSC6112ME2A-000.0000T: The AEC-Q100 rating means it passed the full automotive stress qualification (temperature cycling, ESD, latch-up) per JEDEC, so it is suited for under-hood or chassis-mounted ECUs that see -20°C to 70°C ambient. The standby function pulls the disable current down to 12 µA max, so the oscillator can be gated off in sleep modes while keeping the rest of the circuit powered — useful for battery-backed RTC or wake-up receivers.
Obsolete — sourcing through independent channels
The laser etch and date-code on any offered stock should be verified against Microchip's factory marking standards — a counterfeit lot I flagged last year had a font mismatch on the second line of the mark.
The small footprint fits space-constrained designs like automotive sensor modules or portable instrumentation. The blank (user-programmable) variant requires programming before assembly — the frequency is not factory-set, so the BOM must account for a programming step or a pre-programmed order code.