Crystal oscillator quartz crystal unit with 32.768KHz frequency HD 7Q032768NW2 and RoHS certification

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Product Description

Product Overview

This specification applies to the RoHS compliance quartz crystal unit with a frequency of 32.768KHz, designed for use in crystal oscillator applications. The HD308 model offers reliable performance with defined electrical and reliability characteristics.

Product Attributes

Brand: JIANGSU HD-CRYSTAL TECHNOLOGY CO., LTD
Model: HD308
Origin: China (implied by company name and location)
Certifications: RoHS compliance

Technical Specifications

Item	Specification	Condition	Standard
Electrical Characteristics	Mode of Vibration		+2X-cut , Fundamental
	Nominal frequency(F)		32.768KHz
	Load Capacitance(CL)		12.5pF
	Frequency Tolerance at 25		20ppm
	Frequency Temperature Stability		-0.04* 10-6/2 Max
	Series Resistance(Rr)		50 K Max
	Quality Factor(Q)		60K TYP
	Turnover Temperature(To)		25 5
Operation Temperature			-20~ +70
Preservation Temperature			-40~ +85
Shunt Capacitance(C0)			0.8PF Typical
Capacitance Ratio(C0/C1)			500 Typical
Insulation Resistance		at DC 100V10V	500M
Drive Level			1 W Max
Reliability Specification	Drop characteristics	Free drop from 75cm height on a hard wooden board for 3 times. (Board is thickness more than 30 mm.)	Frequency change:5ppm Rr as specification
	Mechanical shock	Device are shocked to half sine wave (1000g) three mutually perpendicular axes each 3 times	Frequency change:5ppm Rr as specification
	Shake characteristics	Shake frequency 10~55Hz, cyc1~2 minutes, swing 1.5mm, direction x/y/z, all 30 minutes, test after 1 hours.	Frequency change:5ppm Rr as specification
	Humidity characteristics	+402 & 90%~95% R.H. 250 hours	Frequency change:5ppm Rr as specification
	Low temperature characteristics	-402, 250 hours, put in room temperature, test after 1 hours.	Frequency change:5ppm Rr as specification
	High temperature characteristics	+852, 250 hours, put in room temperature, test after 1 hours.	Frequency change:5ppm Rr as specification
	Temperature cycling	-303/303 min~+852/303min, 5 cycles	Frequency change:5ppm Rr as specification
	Refluence examination		Frequency change:5ppm Rr as specification