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Microchip Technology DSC1033CI2-012.5000 — Crystals & Oscillators

DSC1033CI2-012.5000 MEMS Oscillator 12.5 MHz CMOS ±25 ppm

MPNDSC1033CI2-012.5000
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Microchip Technology DSC1033CI2-012.5000, PureSilicon™ MEMS XO (Standard), 12.5 MHz CMOS output, ±25 ppm frequency stability, 3.3 V supply, -40°C to 85°C industrial temperature range, 4-SMD no-lead package.

Microchip Technology DSC1033CI2-012.5000 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1033CI2-012.5000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1033, PureSilicon™
MountingSurface Mount
Voltage3.3V
Current - supply10mA
Current - supply (Disable)1µA
Frequency12.5 MHz
Frequency stability±25ppm
Operating temperature-40°C~85°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
FunctionStandby (Power Down)
Base resonatorMEMS
Case4-SMD, No Lead

Product details

The 3.3 V supply rail and CMOS output make it a drop-in clock source for 3.3 V MCUs, FPGAs, and ASICs without level translation.

Industrial temperature and stability margin

The ±25 ppm frequency stability ensures UART baud rates and CAN bus bit timing stay within tolerance across temperature — a 12.5 MHz clock with ±25 ppm drifts less than 312 Hz at the extremes, which is well within the margin for most serial protocols.

Housed in a 4-SMD, No Lead package measuring 3.20 mm x 2.50 mm with a seated height of 0.90 mm, the DSC1033CI2-012.5000 fits tight PCB layouts and is compatible with standard reflow soldering profiles. Surface-mount assembly requires no through-hole — the no-lead design reduces parasitic inductance compared to a leaded package, which helps maintain signal integrity at the output edge rate.

Frequently asked questions

How does the DSC1033CI2-012.5000 compare to a quartz crystal oscillator?

The DSC1033CI2-012.5000 uses a MEMS resonator instead of a quartz crystal. MEMS oscillators typically offer faster startup, better shock and vibration resistance, and smaller package size compared to quartz-based XOs at the same frequency and stability grade. The ±25 ppm stability and 12.5 MHz output are functionally equivalent to a quartz oscillator for most digital clocking applications.

What does the standby (power down) function do?

When the standby pin is asserted, the oscillator stops and draws only 1 µA (max) from the 3.3 V supply, compared to 10 mA in active mode. This allows the system to gate the clock to save power during sleep states without removing the supply rail.

What is the closest pin-compatible alternative to the DSC1033CI2-012.5000?

Within the DSC1033 family, other frequency variants with the same package, supply voltage, and stability grade share the same pinout. For a direct functional equivalent at 12.5 MHz with CMOS output and ±25 ppm, the DSC1033CI2-012.5000 itself is the exact ordering code — no second-source or cross-reference is documented by Microchip.