MC-146

www.DataSheet4U.com Crystal unit THIN SMD LOW/MEDIUM-FREQUENCY CRYSTAL UNIT MC-146 High-density mounting-type SMD of 1.4mm thickness. Small packaging area and light weight. Excellent shock resistance and environmental capability. Most suitable for small communications devices. Actual size Specifications (characteristics) Item Symbol Specifications 32.768kHz -55˚C to +125˚C -40˚C to +85˚C 1.0µW max. Operating drive level 0.5µW max. 75.000kHz Remarks please contact us for inquiries about usable frequencies Nominal frequency Temperature range f TSTG TOPR GL TSOL ∆f/f θT a CL R1 C1 C0 IR fa Storage temperature Operating temperature Maximum drive level Soldering condition Frequency tolerance(standard) Peak temperature(frequency) Temperature coefficient(frequency) Load capacitance Series resistance Motional capacitance Shunt capacitance Insulation resistance Aging Twice at under 260˚C within 10 sec. or under 230˚C within 3 min. ±20ppm, ±50ppm 25˚C ±5˚C -0.04ppm/ ˚C2 max. 6pF to ∞ 65 kΩ max. 1.9fF typ. 0.8pF typ. 500 MΩ min. ±3ppm/year max. Ta=25˚C ±3˚C, first year Three drops on a hard board from 75 cm or excitation test with 3000G x 0.3ms x 1/2 sine wave x 3 directions Ta=25˚C, DL=0.1µW Please specify 30kΩ max. Shock resistance S.R. ±5ppm max. Metal may be exposed on the top of this product. This won't affect any quality, reliability or electrical spec. External dimensions 0.55 0.3 #4 #3 (Unit: mm) Recommended soldering pattern (Unit: mm) Internal connec...