The DSC1001BI2-004.0000T is a 4 MHz MEMS-based oscillator (XO) rated AEC-Q100, which means it passes the same reliability stress tests as automotive-grade quartz — temperature cycling, mechanical shock, and 85°C/85% RH biased humidity — but without a quartz blank that can crack under vibration.
Standby mode – 15 µA disable for battery-powered wake-up
That is low enough to leave the oscillator on the same rail as a sleeping microcontroller without a load switch — the MEMS resonator restarts in microseconds, so the system can wake on an interrupt without waiting for a crystal start-up envelope.
The CMOS output drives standard logic thresholds directly; no external termination resistor is needed for short PCB traces under 50 mm.
Package and footprint – 5.0 mm x 3.2 mm, 4-pin, no-lead
The 4-SMD, no-lead package (5.00 mm x 3.20 mm, 0.90 mm seated height) is the same land pattern as many quartz oscillators in this form factor — a direct solder-paste swap on a reflow line.
Active production – no last-time-buy clock ticking
Microchip lists the DSC1001 series as Active.