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SMD Crystal 32.768Khz

(ST4115 Series)
4.1*1.5*0.9mm

Features:Excellent aging characteristics.
Ultrathin thickness 0.9mm.(0.7mm is available)
Soldering by reflow is possible.
SPECIFICATIONS
Frequency  32.768khz
HolderAs per attached sheet
Frequency tolerance (at 25 °C)-/+30 ppm
Operating temperature -40~85°C
Equivalent series resistance70K ohms max.
Temperature characteristics
-Turnover temperature
-Parabolic curvature constant

25°C-+5°C
-0.034-+0.006ppm/°C^2
Drive level 1.0uW max.
Load capacitance 12.5pF (standard)
Insulation resistance 500 M ohms//DC 100V
Shock Natural drop from 75cm height onto a hard wooden
board, three times dF/F=±5ppm Max. 
Aging- /+5ppm/year