7Q032768NW2

JIANGSU HD-CRYSTAL TECHNOLOGY CO., LTD HD308 Quartz Crystal 7Q032768NW2 1. Scope: 1.1 This specification applies to the RoHS compliance quartz crystal unit with a frequency of 32.768KHz which will be used in crystal oscillator applications. 2. Construction: 2.1 Type of Quartz Resonator: HD308 3.  Electrical Characteristics 3.1 Mode of Vibration： +2°X-cut , Fundamental 3.2 Nominal frequency(F): 32.768KHz 3.3 Load Capacitance(CL): 12.5pF 3.4 Frequency Tolerance at 25℃ ±20ppm 3.5 Frequency Temperature Stability: -0.04* 10-6/℃2 Max 3.6 Series Resistance(Rr): 50 KΩ Max 3.7 Quality Factor(Q): 60K TYP 3.8 Turnover Temperature(To): 25 ℃± 5℃ 3.9 Operation Temperature: -20 ℃~ +70℃ 3.10 Preservation Temperature: -40 ℃~ +85℃ 3.11 Shunt Capacitance(C0 )： 0.8PF Typical 3.12 Capacitance Ratio(C0/C1): 500 Typical 3.13 Insulation Resistance: 500MΩ at DC 100V±10V 3.14 Drive Level: 1μ W  www. hd- crystal. com 1  Rev . 1. 1 Reliability Specification Item Condition Free drop from 75cm height on a hard wooden 1. Drop characteristics board for 3 times. (Board is thickness more than 30 mm.) 2 Mechanical shock Device are shocked to half sine wave (1000g) three mutually perpendicular axes each 3 times Shake frequency 10~55Hz, cyc1~2 minutes, 3. Shake characteristics swing 1.5mm, direction x/y/z, all 30 minutes, test after 1 hours. Humidity 4. 5. 6.  characteristics Low temperature characteristics High temperature characteristics 7. Temperature cycling 8. Refluence examination +40±2℃ & 90%~95% R.H. 250 hours Standard Frequency change:≤±5ppm Rr as specification Frequency change:≤±5ppm Rr as specification Frequency change:≤±5ppm Rr as specification Frequency change:≤±5ppm Rr as specification -40±2℃, 250 hours, put in room temperature, Frequency change:≤±5ppm test after 1 hours. Rr as specification +85±2℃, 250 hours, put in room temperature, Frequency change:≤±5ppm test after 1 hours. Rr as specification -30±3℃/30±3 min~+85±2℃/30±3min, Frequency change:≤±5ppm 5 cycles Rr as specification Frequency change:≤±5ppm Rr as specification  www. hd- crystal. com 2  Rev . 1. 1 3DFNDJH2XWOLQH'LPHQVLRQV   www. hd- crystal. com 3  Rev . 1. 1 Packing Specificatio 1000 20 5   www. hd- crystal. com 4  Rev . 1. 1