CM7V-T1A 0.4 Tuning Fork Crystal 32.768 kHz DIMENSIONS Package: Recommended Solder Pad: 3,2 1,5 1,0 1,8 0,7 max.0,38 1,5 0,7 1,0 100% leadfree, RoHS - compliant Lowest profile SMT ceramic pack. Ultra low profile: 0.38 mm height SMD-package in Tape and Reel Ind. and Ext. temperature ranges High stability Low aging Low power consumption High shock and vibration resistance ELECTRICAL CHARACTERISTICS AT 25oC: All dimensions in mm typical DESCRIPTION: This SMD ceramic package has been specially designed for ultra low profile telecom and smart-card applications. A special crystal manufacturing process is used to achieve improved electrical characteristics and a miniaturized blank size. For pick-and-place equipment, the parts are available in 12 mm tape: 7” (178 mm) reel with 3’000 crystals 13” (330 mm) reel with 14’000 crystals Nominal Frequency 1) FL 32.768 kHz Load capacitance 2) CL 7.0 / 9.0 / 12.5 pF Frequency tolerance 3) ΔF/F +/-20 ppm ΔF/F +/-100 ppm Series resistance typ./max. RS 55 / 80 kΩ Motional capacitance typ. C1 4.4 fF Static capacitance typ. C0 1.6 pF Drive level max. P 0.5 μW Insulation resistance min. Ri 500 MΩ Aging first year max. ΔF/F +/-3 ppm Turnover temperature T0 Frequency vs. temperature ΔF/F0 –0.035 25 +/-5 ppm °C 2 /°C² (T - T0) +/-10% ppm 1) Other frequencies on request. 2) Other load capacitances on request. 3) Tighter and wider frequency tolerances on request. Version 1.1 / 10.2009 STANDARD FREQUENCIES: Frequency kHz 32.768 Other frequencies on request ENVIRONMENTAL Conditions CHARACTERISTICS: TERMINATIONS AND PROCESSING: Storage temp. range –55 to +125°C Industrial operating temp. range –40 to +85°C Extended operating temp. range –55 to +125°C Max. Dev. Shock resistance ΔF/F 5000 g, 0.3 ms, ½ sine +/-5 ppm Vibration resistance ΔF/F +/-5 ppm 20 g / 10–2000 Hz Type Termination Processing CM7V-T1A 0.4 For SMD mounting Au flashed pads Reflow soldering 260°C / 20 s max. PART NUMBER/ ORDERING INFORMATION EXAMPLE: C M 7 V - T 1 A 0.4 32.768 kHz 9.0 pF +/-20 ppm Frequency tolerance Crystal package C = Crystal in ceramic package Load capacitance CL Frequency FL Thickness max. 0.38 mm Package lid M = Metal lid Package pad form A = Pads on both ends Package size 7 = 3.2 x 1.5 x 0.38 mm Pad plating 1 = Au flashed pads Blank V = Tuning fork Package type T = For SMD mounting All specifications subject to change without notice. Micro Crystal AG Mühlestrasse 14 CH-2540 Grenchen Switzerland 10.09 Tel. +41 32 655 82 82 Fax +41 32 655 82 83 [email protected] www.microcrystal.com Version 1.1 / 10.2009