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Microchip Technology DSC1121BI2-040.6800T — Crystals & Oscillators

DSC1121BI2-040.6800T MEMS Oscillator 40.68 MHz CMOS XO

MPNDSC1121BI2-040.6800T
Active

Microchip Technology DSC1121 series, XO (Standard) MEMS oscillator, 40.68 MHz, CMOS output, ±25 ppm stability, -40°C to 85°C, 2.25V~3.6V supply, 6-VDFN package, Tape & Reel

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BI2-040.6800T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency40.68 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)
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

40.68 MHz MEMS oscillator with ±25 ppm stability

The DSC1121BI2-040.6800T: Supply voltage spans 2.25V to 3.6V, so it runs directly off a 2.5V, 3.0V, or 3.3V rail without an intermediate LDO — a clean fit for mixed-voltage designs. Maximum supply current is 35 mA when enabled; the Enable/Disable function pulls 22 mA max in the disabled state, useful for power-gating the clock tree during sleep modes.

Package and footprint — 6-VDFN, 5.0 x 3.2 mm

Housed in a 6-VDFN package measuring 5.00 mm x 3.20 mm with a seated height of 0.90 mm max, this oscillator occupies a compact footprint suitable for space-constrained PCBs. Surface-mount assembly; the 6-VDFN outline is common among MEMS oscillators, so the PCB land pattern is straightforward and the part reflows with standard lead-free profiles.

Active lifecycle — no obsolescence risk for new builds

Suitable for both new designs and ongoing production.

Frequently asked questions

Can I replace a quartz oscillator with this MEMS oscillator?

Functionally yes, if the quartz part is a 40.68 MHz CMOS-output XO with Enable/Disable and fits a 6-VDFN footprint. MEMS oscillators offer better shock and vibration immunity and faster startup than quartz, but confirm the output drive strength and load capacitance match your receiver's input threshold.