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Microchip Technology DSC1121BI2-120.0000T — Crystals & Oscillators

DSC1121BI2-120.0000T MEMS Oscillator 120 MHz CMOS AEC-Q100

MPNDSC1121BI2-120.0000T
Active

Microchip Technology DSC1121BI2-120.0000T, XO (Standard) MEMS oscillator, 120 MHz CMOS output, ±25 ppm stability, AEC-Q100, -40°C to 85°C, 6-SMD no-lead package.

$1.2450Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BI2-120.0000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency120 MHz
Frequency stability±25ppm
Operating temperature-40°C~85°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

The supply range spans 2.25 V to 3.6 V — one BOM line covers both 2.5 V and 3.3 V clock domains.

Frequency stability and supply current

For a 120 MHz clock, that is ±3 kHz of drift — tight enough for a 100BASE-T1 Ethernet PHY reference or a CAN-FD controller where the bit-time budget is measured in nanoseconds. The disable current is the MEMS oscillator core plus the control logic; the output buffer is off, so the clock line floats high-Z.

The 6-SMD no-lead package measures 5.00 mm x 3.20 mm with a seated height of 0.90 mm. Surface-mount assembly; no special reflow profile beyond what the solder paste requires.

Product status is Active.

Frequently asked questions

Is DSC1121BI2-120.0000T a drop-in replacement for a quartz oscillator?

The MEMS oscillator has the same pad layout and output type (CMOS), so it fits the same board without a layout change. The MEMS part is more rugged under vibration and has a wider supply range than many quartz oscillators, but the frequency stability (±25 ppm) and output drive strength must match the downstream load.

Is DSC1121BI2-120.0000T RoHS compliant?

The part is listed as RoHS compliant. No conflict minerals or restricted substances are reported in the product documentation.