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Microchip Technology DSC1001CI2-004.3000 — Crystals & Oscillators

DSC1001CI2-004.3000 MEMS XO – 4.3 MHz, CMOS, AEC-Q100

MPNDSC1001CI2-004.3000
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Microchip Technology DSC1001CI2-004.3000, XO (Standard) MEMS oscillator, 4.3 MHz CMOS output, ±25 ppm stability, 1.8V–3.3V supply, AEC-Q100 qualified, -40°C to +85°C, 4-SMD no-lead package.

Microchip Technology DSC1001CI2-004.3000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1001CI2-004.3000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1001
MountingSurface Mount
Supply voltage1.8V ~ 3.3V
Current - supply6.3mA
Current - supply (Disable)15µA
Frequency4.3 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
RatingsAEC-Q100
FunctionStandby (Power Down)
Base resonatorMEMS
Case4-SMD, No Lead

Product details

MEMS oscillator replaces quartz at 4.3 MHz

The DSC1001CI2-004.3000 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1001 series, delivering a fixed 4.3 MHz CMOS output.

The supply voltage range spans 1.8V to 3.3V, so the same oscillator can be powered from a 1.8V core rail or a 3.3V I/O rail without a separate LDO.

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 0.50 mm pitch and no-lead construction mean the PCB land pattern must match the recommended footprint in the datasheet — the solder paste stencil aperture and reflow profile are critical for reliable solder joints.

Frequently asked questions

Can the DSC1001CI2-004.3000 replace a standard quartz crystal oscillator?

Yes — it is a drop-in replacement for a 4.3 MHz quartz oscillator in the same 4-SMD no-lead footprint, with the advantage of MEMS reliability. The CMOS output is compatible with most digital clock inputs. The standby (power-down) function is an extra pin that a quartz oscillator may not offer — verify the pinout on your board before substitution.

Is the DSC1001CI2-004.3000 AEC-Q100 qualified?

Yes, it carries AEC-Q100 ratings. This means it has passed the automotive-grade qualification tests for temperature, reliability, and ESD. It is suitable for use in automotive ECUs, ADAS modules, and other vehicle-mounted electronics where the ambient temperature stays within -40°C to +85°C.

What is the closest pin-compatible alternative in the DSC1001 family?

The DSC1001 series includes many frequency variants in the same 4-SMD no-lead package. A pin-compatible alternative would be any DSC1001 with the same package code and a different frequency — for example, DSC1001CI2-001.0000 for 1 MHz. Confirm the frequency and stability grade match your application before substituting.