THIN SMD LOW/MEDIUM-FREQUENCY CRYSTAL UNIT MC-206 • • • • • High-density mounting-type SMD of max. 2.0mm thickness. Small with small packaging area and light weight. High heat resistance allows reflow soldering. Excellent shock resistance and environmental capability. Most suitable for small communications devices. Actual size Specifications (characteristics) Item Symbol Nominal frequency Remarks Specifications f 32.768 kHz 32.000 kHz to 100.000 kHz Storage temperature TSTG -55˚C to +125˚C Operating temperature TOPR -40˚C to +85˚C Maximum drive level GL 1.0µW max. Soldering condition TSOL Temperature range Twice at under 260˚C within 10 sec. or under 230˚C within 3 min. ±20ppm, ±50ppm ±50ppm, ±100ppm Frequency tolerance (standard) ∆f/f Peak temperature (frequency) θT 25˚C ±5˚C a -0.04ppm/ ˚C2 max. Temperature coefficient (frequency) 6pF to ∞ Load capacitance CL Series resistance R1 Motional capacitance C1 1.8fF typ. 3.0fF max. Shunt capacitance C0 0.9pF typ. 1.5pF max. Insulation resistance IR Aging fa Shock resistance Ta=25˚C, DL=0.1µW 55 kΩ max. Please specify 55 kΩ to 10 kΩ As per below table 500 MΩ min. ±3ppm/Y max. Ta=25˚C ±3˚C, first year ±5ppm/Y max. Three drops on a hard board from 75 cm or excitation ±5ppm max. S.R. test with 3000G x 0.3ms x 1/2 sine wave x 3 directions 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) 32 ≤ f < 40 40 ≤ f < 60 60 ≤ f < 70 70 ≤ f ≤100 Series resonance resistance (Ω) 55K Ω max. 30K Ω max. 25K Ω max. 22K Ω max. External dimensions (Unit: mm) 7.3 max. #4 #3 #1 #2 1.2 3.88 1.2 1.3 4.1 E. A. 67 #2 1.3 2.0max. 1.8 2.4 #1 (Unit: mm) Internal connection #3 2.5 #4 Recommended soldering pattern 0.4 5.08 Do not connect #2 and #3 to external device. http://www.spezial.cz - - - [email protected] - - - Hotlines: Tel (02) 2434 2200 - - - Fax (02) 2434 3200