C A L I B E R AWS145 Series Lead-Free RoHS Compliant Electronics Inc. PART NUMBERING GUIDE 32.768kHz SMD Watch Crystal Environmental/Mechanical Specifications on page F5 AWS145 - 32.768kHz - 7 Load Capacitance / Blank = 12pF 32.768kHz SMD Watch Crystal 7.0(L)X1.4(H)X1.5(W) ELECTRICAL SPECIFICATIONS Revision: 2005-C Frequency 32.768kHz Frequency Tolerance Parabolic Curvature Constant ±20ppm Max. -0.04ppm/(Δ°C)2 Max. Turnover Temperature 25°C ±5°C Operating Temperature Range -40°C to 85°C Storage Temperature Range -55°C to 125°C Load Capacitance 12.5pF Typical (blank in part numbering) / 7pF denoted –7 as suffix. Resonance Resistance 65,000 Ohms Max Q Factor 50,000 Min. Drive Level 1uWatt Maximum Motional Capacitance / Shunt Capacitance 1.9fF Typ. / 0.8pF Typ. MECHANICAL DIMENSIONS Marking Guide Marking Guide: Recommended Solder Pad Layout 0.3 1.4 0.6X4 32C49 32 = Frequency (32.768kHz) C = Caliber Electronics Inc. 49 = Manufacturing Date Code 0.15 4 3 5.1 0.3X4 1.2X 4 1.5 0.55 0.1 6.7 1 7.0 2 Internal Pin Connection 0.2 0.4 0.2 0.4 1 4 4 3 1 2 2 0.25 3 0.2 TEL 949-366-8700 FAX 949-366-8707 WEB http://www.caliberelectronics.com