What the AEC-Q100 rating means for your BOM
For a 50 MHz reference clock feeding a CAN transceiver or an Ethernet PHY, the qualification removes the need for a separate screening step in the BOM.
Rated at ±10 ppm frequency stability, the DSC1121CE5-050.0000 holds the 50 MHz output tight enough for a 100BASE-TX PHY or a Cortex-M PLL without extra margin in the timing budget.
It is not rated for engine-bay or outdoor telecom enclosures where ambient exceeds 70°C — confirm the thermal profile before layout.
Package and board-mounting note
Housed in a 6-SMD, no-lead package measuring 3.20 mm x 2.50 mm, the DSC1121CE5-050.0000 shares the footprint common to many MEMS oscillators.