Item	Symbol	Specifications		Condition/Remarks
Item	Symbol	MC-306	MC-306 TYPE	Condition/Remarks
Nominal frequency range	f_nom	32.768kHz	20kHz to 120kHz	Please contact us regarding available frequencies
Storage temperature	T_stg	-55°C to +125°C		Store as bare product.
Operating temperature	T_use	-40°C to +85°C
Level of drive	DL	1.0µW Max.
Frequency tolerance (standard)	f_tol	±20 × 10^-6, ±50 × 10^-6	±50 × 10^-6, ±100 × 10^-6	+25°C, DL=0.1µW
Turnover temperature	Ti	+25°C ±5°C
Parabolic coefficient	B	-0.04 × 10^-6/ °C² Max.
Load capacitance	CL	6pF to ∞ (standard :12.5pF)		Please specify
Motional resistance (ESR)	R1	50kΩ Max.	As per below table
Motional capacitance	C1	1.8fF Typ.	4.0fF to 0.6fF
Shunt capacitance	C0	0.9pF Typ.	2.0pF to 0.6pF
Frequency aging	f_age	±3 ×10^-6 / year Max.	±5 ×10^-6 / year Max.	+25°C, First year

MC-306 TYPE Motional resistance (ESR)

Frequency	20kHz≤f_nom<31.2kHz	31.2kHz≤f_nom<40kHz	40kHz≤f_nom<90kHz	90kHz≤f_nom<120kHz
Motional resistance	55kΩ Max.	35kΩ Max.	20kΩ Max.	12kΩ Max.

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