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Microchip Technology DSC1121BI2-125.0000T — Crystals & Oscillators

DSC1121BI2-125.0000T MEMS Oscillator 125 MHz CMOS AEC-Q100

MPNDSC1121BI2-125.0000T
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Microchip DSC1121BI2-125.0000T, XO (Standard), 125 MHz, CMOS output, ±25 ppm stability, 2.25V~3.6V supply, AEC-Q100 qualified, -40°C~85°C, 6-SMD No Lead package.

Microchip Technology DSC1121BI2-125.0000T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BI2-125.0000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency125 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 DSC1121BI2-125.0000T is a 125 MHz MEMS-based XO (Standard) oscillator from Microchip's DSC1121 series, delivering a CMOS output across a 2.25V to 3.6V supply range.

Housed in a 6-SMD No Lead package measuring 5.00 mm x 3.20 mm with a seated height of 0.90 mm, this oscillator fits standard reflow assembly and occupies a compact footprint on the PCB. Surface-mount mounting with no leads means the package sits flush on the board — no through-hole clearance needed, and the thermal path is through the pad directly to the PCB copper.

Frequently asked questions

What is the output type and supply voltage range of DSC1121BI2-125.0000T?

The output is CMOS, and the supply voltage range is 2.25V to 3.6V. This means it can run from a 2.5V or 3.3V rail without an external regulator.

Is DSC1121BI2-125.0000T AEC-Q100 qualified?

Yes, it carries AEC-Q100 rating, making it suitable for automotive applications that require the reliability and temperature range specified by that standard.

What is the frequency stability of DSC1121BI2-125.0000T?

The frequency stability is ±25 ppm, which is tight enough for most serial communication clocks and microcontroller timing without needing a temperature-compensated crystal oscillator.

What is the closest pin-compatible alternative to DSC1121BI2-125.0000T?

The base product number DSC1121 covers the family. A direct sibling is the DSC1121AI2-125.0000T, which shares the same 125 MHz, CMOS output, and 6-SMD package — the 'BI2' vs 'AI2' suffix typically indicates a different temperature range or stability grade. Confirm the specific suffix requirements against your BOM before swapping.