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Microchip Technology DSC1121CM2-040.0000 — Crystals & Oscillators

DSC1121CM2-040.0000 MEMS Oscillator – 40 MHz CMOS

MPNDSC1121CM2-040.0000
Active

Microchip Technology DSC1121 series, XO (Standard) oscillator, 40 MHz CMOS output, MEMS resonator, 2.25V~3.6V supply, ±25 ppm stability, -55°C~125°C, 6-SMD no-lead package, tube.

$2.0300Ref. price · indicative, final on quote
Microchip Technology DSC1121CM2-040.0000 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121CM2-040.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency40 MHz
Frequency stability±25ppm
Operating temperature-55°C~125°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

40 MHz MEMS oscillator for extreme-temperature timing

The DSC1121CM2-040.0000 is a 40 MHz XO (Standard) oscillator built on a MEMS resonator rather than a quartz crystal, delivering a CMOS output from a 2.25V to 3.6V supply rail.

MEMS vs quartz — what changes on the BOM

Because the base resonator is MEMS, the DSC1121CM2-040.0000 is not a direct pin-for-pin replacement for a quartz-based 40 MHz oscillator — the startup time, phase-noise profile, and aging characteristics follow MEMS behavior, not quartz. The wide supply range (2.25V to 3.6V) means it can run from a 2.5V or 3.3V rail without a separate regulator, which simplifies the power tree in mixed-voltage designs.

6-SMD no-lead — footprint and layout notes

Housed in a 6-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm (0.035"). The small footprint suits space-constrained boards in handheld or embedded modules.

Frequently asked questions

Is the DSC1121CM2-040.0000 a direct replacement for a standard 40 MHz quartz crystal oscillator?

Not without checking the system timing budget. The MEMS resonator has different startup behavior, jitter, and aging characteristics than a quartz crystal. The output is CMOS and the supply range is 2.25V to 3.6V, so it can fit the same socket electrically, but the phase-noise profile and frequency stability (±25 ppm) must be verified against the application's timing requirements.