50 MHz MEMS oscillator with standby power-down
The DSC1033CI1-050.0000 is a 50 MHz XO (Standard) clock oscillator built on a MEMS resonator, delivering a CMOS output at 3.3 V supply. The MEMS base resonator gives it shock and vibration tolerance compared to quartz — relevant for industrial or portable equipment that sees mechanical stress. The standby (power-down) function drops supply current to 1 µA max — the oscillator's own draw is negligible when the system sleeps, making it suitable for battery-powered sensors or IoT nodes that wake intermittently.
Microchip lists the DSC1033CI1-050.0000 as Obsolete. Quantities are lot-specific and confirmed at RFQ — no stock-holding claim is made here. A board spin would be required to migrate to a current-production oscillator; the 4-SMD no-lead footprint and 3.3 V supply are common, but the MEMS vs quartz difference may affect jitter and startup timing in the target circuit.
The 4-SMD, No Lead package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a compact footprint that fits tight PCB layouts. The no-lead construction requires a solder-paste stencil aperture matched to the pad geometry; typical land pattern follows the JEDEC standard for this body size.