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MC-30632768KHZ
Crystal unit 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. Actual size Specifications (characteristics) Item Symbol f Nominal frequency Storage temperature Operating temperature Temperature range 32.768 kHz 20.000 kHz to 165.000 kHz TSTG -55˚C to +125˚C TOPR -40˚C to +85˚C Stored as bare product after unpacking 1.0µW max. GL Maximum drive level Remarks Specifications Twice at under 260˚C within 10 sec. Soldering condition TSOL Frequency tolerance (standard) ∆f/f Peak temperature (frequency) θT 25˚C ±5˚C Temperature coefficient (frequency) a -0.04ppm/ ˚C2 max. Load capacitance CL or under 230˚C within 3 min. ±20ppm, ±50ppm Ta=25˚C, DL=0.1µW ±50ppm, ±100ppm 6pF to ∞ Please specify Series resistance R1 Motional capacitance C1 1.8fF typ. 4.0fF to 0.6fF Shunt capacitance C0 0.9pF typ. 2.0pF to 0.6pF Insulation resistance IR Aging fa Shock resistance 50 kΩ max. 55 kΩ to 10 kΩ As per below table 500 MΩ min. ±3ppm/year max. ±5ppm/year max. ±5ppm max. S.R. 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 Metal may be exposed on the top of this product. This won't affect any quality, reliability or electrical spec. Series resistance Frequency (kHz) 20 ≤ f < 30 30 ≤ f < 40 40 ≤ f < 60 60 ≤ f < 70 70 ≤ f < 120 120 ≤ f < 165 Series resistance (Ω) 55k Ω max. 45k Ω max. 20k Ω max. 15k Ω max. 12k Ω max. 10k Ω max. External dimensions (Unit: mm) #3 #1 #2 1.3 4.2 1.3 1.9 3.2 32.768k E 571 #4 3.8 max. #3 #2 1.9 2.38 2.54 max. 1.3 #1 (Unit: mm) Internal connection 8.0 max. #4 Recommended soldering pattern 0.5 1.9 5.5 (0.9) Do not connect #2 and #3 to external device. 19 (0.9)
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