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Microchip Technology DSC1221DI3-148M5000 — Crystals & Oscillators

DSC1221DI3-148M5000 XO (Standard) 148.5 MHz CMOS MEMS

MPNDSC1221DI3-148M5000
Active

Microchip Technology DSC12X1 series, XO (Standard), 148.5 MHz CMOS output, MEMS resonator, AEC-Q100 rated, -40°C to 85°C, 2.5V-3.3V supply, 6-VDFN package.

Microchip Technology DSC1221DI3-148M5000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1221DI3-148M5000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC12X1
MountingSurface Mount
Supply voltage2.5V ~ 3.3V
Current - supply27mA (Typ)
Current - supply (Disable)23mA (Typ)
Frequency148.5 MHz
Frequency stability±20ppm
Operating temperature-40°C ~ 85°C
Size (Dimension)0.098\" L x 0.079\" W (2.50mm x 2.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-VDFN

Product details

Automotive-grade MEMS clock at 148.5 MHz

The DSC1221DI3-148M5000 is a standard XO (XO (Standard)) with a MEMS resonator delivering a 148.5 MHz CMOS output clock.

Supply flexibility and enable/disable function

The oscillator operates from a 2.5V to 3.3V supply, letting it run directly on a 2.5V FPGA bank or a 3.3V MCU rail without an extra LDO.

The 6-VDFN package measures 2.50 mm × 2.00 mm with a seated height of 0.90 mm. Surface-mount — the small footprint leaves room for decoupling caps near the supply pins on a dense automotive ECU layout.

Product status is Active from Microchip Technology.

Frequently asked questions

Is the DSC1221DI3-148M5000 AEC-Q100 qualified?

Yes, the part carries an AEC-Q100 rating, meaning it has passed automotive-grade temperature cycling, ESD, and reliability stress tests. Suitable for under-hood and cabin applications where the ambient temperature stays within -40°C to 85°C.

Does DSC1221DI3-148M5000 have an enable/disable function?

Yes — the function is listed as Enable/Disable. When disabled, the supply current drops to 23 mA typical from the 27 mA typical active draw, useful for power gating in battery-backed or low-power modes.

Can DSC1221DI3-148M5000 replace a standard quartz oscillator?

Functionally yes — it is a drop-in XO replacement with CMOS output. The MEMS resonator offers better shock and vibration tolerance compared to a quartz crystal, and the ±20 ppm stability is comparable to many quartz-based XOs. Pin compatibility depends on the specific quartz part; verify the 6-VDFN footprint matches your existing layout.