It fits engine control units, transmission controllers, and ADAS sensor modules that require the -40 to 85°C temperature range.
The supply voltage range covers 1.8V to 3.3V, so the same oscillator serves a 1.8V FPGA bank, a 2.5V SoC, or a 3.3V microcontroller without a separate regulator. That is low enough to leave the oscillator powered from a battery-backed rail in a sleep mode without draining the coin cell.
The 7.00 mm x 5.00 mm 4-SMD package with no-lead exposed pad is a standard footprint shared across the DSC1004 family. Seated height is 0.90 mm — this fits within the 1.0 mm clearance typical of a two-board stack in a sealed ECU housing. The 0.50 mm pitch of the peripheral pads is wide enough for hand-solder inspection, but reflow is the intended assembly method.
The DSC1004AI1-048.0000T carries Active product status — Microchip continues to manufacture and support this order code. No NRND or EOL notice has been issued.