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Microchip Technology DSC1121CM1-030.0000T — Crystals & Oscillators

DSC1121CM1-030.0000T – 30 MHz MEMS XO, AEC-Q100

MPNDSC1121CM1-030.0000T
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Microchip Technology DSC1121 series, XO (Standard) MEMS oscillator, 30 MHz CMOS output, ±50 ppm stability, 2.25 V to 3.6 V supply, AEC-Q100 qualified, -55°C to +125°C operating range, 6-SMD no-lead package, Enable/Disable function.

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

Specifications

DSC1121CM1-030.0000T specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1121
MountingSurface Mount
Voltage2.25V ~ 3.6V
Current - supply35mA
Current - supply (Disable)22mA
Frequency30 MHz
Frequency stability±50ppm
Operating temperature-55°C~125°C
Size (Dimension)0.126\" L x 0.098\" W (3.20mm x 2.50mm)
Height - seated0.035\" (0.90mm)
OutputCMOS
PackageTape & Reel (TR)
RatingsAEC-Q100
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead

Product details

For a 30 MHz clock feeding a CAN-FD controller or an Ethernet PHY, this eliminates the startup-margin and drive-level calculations that quartz designs require.

Automotive and military temperature deployment

CMOS output drives up to 35 mA max, enough to fan out to two or three loads on a short PCB trace without a buffer.

Enable/Disable for power and EMI control

Frequency stability over temperature

±50 ppm frequency stability across the full -55°C to +125°C range means the 30 MHz output stays within 1.5 kHz of nominal — tight enough for most serial communication links (CAN-FD, SPI, UART) without a separate TCXO. The MEMS resonator's aging characteristic is typically lower than a quartz AT-cut crystal's over the same period.

The 6-SMD no-lead package measures 3.20 mm x 2.50 mm with a seated height of 0.90 mm — a standard 3.2 x 2.5 mm oscillator footprint that matches many quartz XO layouts. Surface-mount reflow profile follows standard lead-free solder profiles; no special bake-out required before assembly.

Frequently asked questions

Is the DSC1121CM1-030.0000T AEC-Q100 qualified for automotive use?

Yes, it carries AEC-Q100 qualification, which means it has passed the reliability stress and temperature cycling required for automotive-grade applications — suitable for under-hood or chassis-domain ECUs.

Can the DSC1121CM1-030.0000T be used as a direct replacement for a quartz crystal oscillator?

Yes, in most designs — the MEMS oscillator outputs a CMOS clock at 30 MHz with ±50 ppm stability, which is a direct functional replacement for a quartz XO. The 6-SMD no-lead package (3.2 mm x 2.5 mm) matches the footprint of many standard quartz oscillators. No external load capacitors are needed, unlike a bare quartz crystal.

What is the frequency stability of the DSC1121CM1-030.0000T?

Frequency stability is ±50 ppm over the full -55°C to +125°C range. This keeps the 30 MHz output within 1.5 kHz of nominal — sufficient for most serial communication links without a separate TCXO.

How do I enable/disable the output on the DSC1121CM1?

The Enable/Disable pin (pin 1 on the 6-SMD package) controls the output. Driving it high enables the output; driving it low disables the output into high-impedance state, reducing supply current to 22 mA max. The pin has an internal pull-up, so leaving it floating keeps the output enabled.