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Microchip Technology DSC1121AI5-050.0000 — Crystals & Oscillators

DSC1121AI5-050.0000 MEMS Oscillator 50 MHz CMOS AEC-Q100

MPNDSC1121AI5-050.0000
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Microchip Technology DSC1121AI5-050.0000, XO (Standard) 50 MHz CMOS MEMS oscillator, ±10 ppm stability, AEC-Q100 qualified, -40°C to 85°C, 6-SMD no-lead exposed pad package.

$1.9650Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121AI5-050.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency50 MHz
Frequency stability±10ppm
Operating temperature-40°C~85°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTube
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

The MEMS die is sealed in a 6-SMD no-lead exposed pad package measuring 7.00 mm x 5.00 mm, surface-mount compatible with standard reflow profiles. For a 50 MHz clock, ±10 ppm translates to ±500 Hz of absolute jitter budget — enough margin for a 100BASE-TX Ethernet PHY or a CAN-FD controller without external PLL cleanup.

Supply range and enable/disable function

Supply voltage spans 2.25 V to 3.6 V, covering 2.5 V and 3.3 V logic rails without an external regulator. The Enable/Disable pin (tri-level: high = output, low = high-Z, float = output) lets a system microcontroller gate the clock to a peripheral, saving 22 mA max in the disabled state against 35 mA max when running.

Frequently asked questions

What is the difference between a MEMS oscillator and a quartz oscillator?

A MEMS oscillator uses a silicon micro-electromechanical resonator instead of a quartz crystal. The MEMS die is smaller, more shock-tolerant (typically 50,000 g vs 5,000 g for quartz), and starts up in under 5 ms vs 10–20 ms for a quartz oscillator. The trade-off is that MEMS oscillators have slightly higher phase noise floor than a high-end quartz OCXO, but for 50 MHz CMOS logic the difference is negligible.

Where can I buy the DSC1121AI5-050.0000?

No stock-holding claim is made here.