QTC432.76809B2R

QTC4 Series 1.5x4.1 SMD Tuning Fork Features Applications Low frequency in small size SMD Commercial and Industrial applications Seam sealed ceramic package offers excel- Wireless communications lent environmental & heat resistance PDA and Smartphone Extended temperature -40 to +85C for Time of day applications industrial applications General Speci cations Mechanical Dimensions Nominal Frequency 32.768kHz Frenquency Tolerance at 25C 20ppm 4.10.1 Temperature Coef cient -0.034 0.008ppm/ C Temperature Range (Operating) -40 to +85C Storage Temperature -55 to +125C Load Capacitance C 7pF, 9pF, 12.5pF L Shunt Capacitance C 1.7pF typ. 0 Motional Capacitance C 3.0fF typ. 1 3.4 Equivalent Series Resistance (ESR) 65K max. 3.3 Drive Level 1W max. Aging per Year 3ppm max. Insulation Resistance (M) 500 at 100Vdc 15Vdc 0.6 1.1 Quality Factor 70000 typ. Capacitance Ratio 450 typ. Part Numbering Guide Qantek Code Package Nominal Frequency (in kHz) Load Capacitance Operating Temperature Range Frequency Tolerance Packaging Q = Qantek TC4 = 1.5x4.1 SMD 32.768 07 = 7pF B = -40 to +85C 1 = 10ppm R = 3000pcs Tape&Reel = Tuning Fork 09 = 9pF 2 = 20ppm 12 = 12.5pF 3 = 30ppm Example: QTC432.76812B2R bold letters = recommended standard speci cation Tape and Reel Dimensions QANTEK Technology Corporation Phone: +1 877-227-0440 (tollfree) www.qantek.com Fax: +1 877-227-0440 (tollfree) info qantek.com 0.75 0.1 1.3 1.5 0.1 1.9 QTC4 Rev. 0.1QTC4 Series 1.5x4.1 SMD Tuning Fork Marking Code Guide Contains manufacturer code / lot code Solder Re ow Pro le Frequency vs. Temperature Characteristics To calculate the frequency stability the parabolic curvature constant (K) is needed. For calculating the stability at 45C 1- Change in temperature ( T) is (45-25) = +20C 2- Change in frequency is (-0.034 x ( C)) = (-0.035 x (20) = -13.6ppm QANTEK Technology Corporation Phone: +1 877-227-0440 (tollfree) www.qantek.com Fax: +1 877-227-0440 (tollfree) info qantek.com QTC4 Rev. 0.1