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Microchip Technology DSC1121BI2-125.0037 — Crystals & Oscillators

DSC1121BI2-125.0037 MEMS XO 125.037 MHz ±25 ppm CMOS

MPNDSC1121BI2-125.0037
Active

Microchip Technology DSC1121BI2-125.0037, XO (Standard), MEMS base, 125.037 MHz CMOS output, ±25 ppm stability, 2.25–3.6 V supply, -40 to 85 °C, 6-VDFN package.

$1.6050Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BI2-125.0037 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency125.037 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
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

125.037 MHz MEMS XO with ±25 ppm total stability

The supply voltage spans 2.25 V to 3.6 V, which covers both 2.5 V and 3.3 V logic rails without an additional regulator. Max supply current is 35 mA while enabled; disable mode drops it to 22 mA — useful for power-gating a clock domain during sleep.

Housed in a 6-VDFN package measuring 5.00 mm × 3.20 mm with a seated height of 0.90 mm. Surface-mount reflow profile follows standard lead-free soldering; the Enable/Disable pin allows the clock to be tri-stated for boundary-scan testing or low-power modes.

Listed as Active by Microchip.

Frequently asked questions

Can DSC1121BI2-125.0037 replace a quartz oscillator?

Yes, it is a drop-in functional replacement for a standard 125.037 MHz quartz XO in the same 6-VDFN footprint, with the advantage of MEMS-based reliability and wider supply tolerance. However, confirm the Enable/Disable logic polarity and output drive strength match your existing circuit — the DSC1121 uses CMOS output with active-high enable by default. Pinout should be verified against the datasheet.

Is DSC1121BI2-125.0037 RoHS compliant?

RoHS compliance is standard for Microchip's DSC1121 series. The 6-VDFN package is lead-free compatible. Confirm the specific date-code compliance if required for your market.