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| SMALL SMD LOW / MEDIUM-FREQUENCY CRYSTAL UNIT MC-306 * * * * High-density mounting-type SMD. Photolithography finished allows uniform and stable performance. Excellent reliability and environmental capability. 2.54mm thickness is equal to SMD-type IC. Actual size Specifications (characteristics) Item Symbol f TSTG TOPR GL TSOL f/f T a CL R1 C1 C0 IR fa 3ppm/Y max. 50 k max. 1.8fF typ. 0.9pF typ. 32.768 kHz Specifications 20.000 kHz to 165.000 kHz -55C to +125C -40C to +85C 1.0W max. Twice at under 260C within 10 sec. Stored as bare product after unpacking Remarks Nominal frequency Temperature range 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 or under 230C within 3 min. 20ppm, 50ppm 50ppm, 100ppm 25C 5C -0.04ppm/ C2 max. 6pF to 55 k to 10 k 4.0fF to 0.6fF 2.0pF to 0.6pF 500 M min. 5ppm/Y max. Ta=25C 3C, 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=25C, DL=0.1W Please specify As per below table Shock resistance S.R. 5ppm max. There are some cases that a parts of the cylindrical capsule of quartz unit expose on the surface of the molding material. Series resistance Frequency (kHz) Series resonance resistance () 20 f < 30 55K max. 30 f < 40 45K max. 40 f < 60 20K max. (Unit: mm) 60 f < 70 15K max. 70 f < 120 12K max. 120 f < 165 10K max. (Unit: mm) External dimensions 8.0 max. #4 #3 Recommended soldering pattern 1.3 4.2 1.3 Internal connection #4 3.8 max. #3 #1 #2 #1 #2 2.54 max. 2.38 0.5 5.5 (0.9) 1.9 (0.9) Do not connect #2 and #3 to external device. http://www.spezial.cz - - - spezial@spezial.cz - - - Hotlines: Tel (02) 2434 2200 - - - Fax (02) 2434 3200 1.9 1.3 1.9 32.768k E 571 3.2 |
Price & Availability of MC-306
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