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Microchip Technology DSC1121AI2-125.0037T — Crystals & Oscillators

DSC1121AI2-125.0037T Microchip MEMS Oscillator, 125.0037 MHz

MPNDSC1121AI2-125.0037T
Active

Microchip DSC1121 series MEMS XO, 125.0037 MHz, CMOS output, AEC-Q100 qualified, 2.25-3.6 V supply, -40 to 85 °C, 6-SMD package

Microchip Technology DSC1121AI2-125.0037T datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI2-125.0037T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency125.0037 MHz
Frequency stability±25ppm
Operating temperature-40°C~85°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

125.0037 MHz MEMS XO — AEC-Q100 qualified, active

The DSC1121AI2-125.0037T is a MEMS-based oscillator from Microchip's DSC1121 series, delivering a 125.0037 MHz output in CMOS logic levels.

Active lifecycle — production for new designs

Temperature grade and automotive deployment

Suitable for cabin and chassis-domain electronics where the ambient stays below 85°C. Under-hood (Grade 0, 125°C) is outside this part's spec; for that, look at the DSC1121 series' higher-temperature variants if they exist.

Frequently asked questions

Is DSC1121AI2-125.0037T AEC-Q100 qualified?

Yes — the ratings field explicitly lists AEC-Q100. It is a qualified automotive-grade oscillator, not just an industrial part marketed as 'automotive-capable'. The PPAP documentation should be available from Microchip for your OEM auditor.

Can this MEMS oscillator replace a standard quartz crystal oscillator?

Yes, in most cases — the DSC1121 is a drop-in MEMS replacement for quartz XOs in the same 7.00 x 5.00 mm 6-SMD package. The MEMS resonator offers better jitter and reliability under vibration, but the output is CMOS, so the load capacitance and termination must match the receiver. No pinout change needed.