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Microchip Technology DSC1121BM1-027.0000T — Crystals & Oscillators

DSC1121BM1-027.0000T MEMS Oscillator

MPNDSC1121BM1-027.0000T
Active

Microchip DSC1121 series MEMS XO, 27 MHz, CMOS output, 6-SMD no-lead package, AEC-Q100 qualified, -55°C to +125°C operating range

Microchip Technology DSC1121BM1-027.0000T datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1121BM1-027.0000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency27 MHz
Frequency stability±50ppm
Operating temperature-55°C~125°C
Size (Dimension)0.197\" L x 0.126\" W (5.00mm x 3.20mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

27 MHz MEMS XO — military-temp range, AEC-Q100 qualified

The DSC1121BM1-027.0000T is a 27 MHz MEMS-based oscillator from Microchip's DSC1121 series, delivering a standard CMOS output in a compact 5.00 mm × 3.20 mm 6-SMD no-lead package.

When disabled, the oscillator draws 22 mA max; active draw is 35 mA max. Supply range spans 2.25 V to 3.6 V, covering 2.5 V and 3.3 V logic rails without an external regulator. The wide input tolerance simplifies BOM consolidation across multi-rail boards.

The 6-SMD no-lead footprint is a standard ceramic oscillator layout — no special via-in-pad or thermal pad requirements.

Frequently asked questions

Is DSC1121BM1-027.0000T suitable for automotive designs?

Yes — it carries AEC-Q100 qualification, which covers the reliability stress tests required for automotive-grade ICs.

What is the enable/disable function on the DSC1121BM1?

The enable/disable pin allows the output to be tri-stated while the oscillator core remains powered. This is useful for power management or for sharing a clock line among multiple loads. When disabled, the supply current drops to 22 mA max from the active 35 mA max.

Can a MEMS oscillator replace a quartz oscillator in automotive applications?

Yes — MEMS oscillators like the DSC1121 series offer better shock and vibration tolerance than quartz, and they start up faster (typically under 5 ms). The AEC-Q100 qualification confirms the part meets automotive reliability requirements. The ±50 ppm frequency stability is comparable to standard quartz XOs.