The DSC1121AM1-027.0000T: This temperature grade suits avionics, downhole instrumentation, satellite payloads, and engine-bay control modules where quartz oscillators typically fail above 105°C or exhibit frequency drift from crystal aging. Supply voltage spans 2.25V to 3.6V, covering both 2.5V and 3.3V logic rails without a separate regulator. For battery-powered or thermally constrained designs, budget this draw into the power rail sizing.
Package and board layout: 6-VDFN exposed pad
Housed in a 6-VDFN exposed-pad package measuring 7.00mm x 5.00mm with a seated height of 0.90mm. The 7.00mm x 5.00mm footprint is larger than a typical 5.0mm x 3.2mm quartz oscillator — confirm the pad layout matches the BOM position before committing the board.
Listed as Active by Microchip Technology. No official second source or pin-compatible cross-reference is documented. The DSC1121 series is a single-sourced Microchip MEMS oscillator line; a board spin would be required to substitute a quartz-based XO with a different footprint.