MEMS XO at 27 MHz — ±10 ppm, CMOS, wide supply
The DSC1121AI5-027.0000: This is a 27 MHz MEMS-based XO (standard oscillator) with CMOS output — the ±10 ppm frequency stability holds across the full -40 to 85 °C industrial range, so it fits outdoor telecom, motor drives, and factory-floor controllers where a quartz crystal would drift more with temperature.
Package and mounting — 6-SMD, no lead
Housed in a 6-SMD, No Lead package measuring 7.00 mm x 5.00 mm with a seated height of 0.90 mm — standard footprint for 7x5 oscillators, reflow-solderable with typical lead-free profiles. Surface-mount only; no socket option, so plan for a reflow step if this is a field-repair scenario.