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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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FC255 датащи(PDF) 1 Page - List of Unclassifed Manufacturers |
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FC255 датащи(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 2 page  21 Crystal unit 22 Crystal unit Specifications (characteristics) Specifications (characteristics) THIN SMD LOW / MEDIUM FREQUENCY CRYSTAL UNIT FC-255 Product number (please refer to page 1) Q 1 x F C 2 5 5 x x x x x 0 0 • High-density mounting-type SMD of 0.8 mm Typ. thickness. • Small packaging area and light weight. • Excellent environmental capability. • Most suitable for small communications devices. • Available for lead (Pb)-free soldering. • Lead (Pb)-free terminal product. Actual size Item Symbol Specifications Remarks Nominal frequency range f 32.768 kHz 32.000 kHz please contact us for inquiries about the available frequency Temperature range Storage temperature TSTG -55 ˚C to +125 ˚C Stored as bare product after unpacking Operating temperature TOPR -40 ˚C to +85 ˚C Maximum drive level GL 0.5 µW Max. Frequency tolerance (standard) Δf/f ±20 x 10-6 ±50 x 10-6,±100 x 10-6 Ta = +25 ˚C, DL = 0.1 µW Please ask tighter tolerance Peak temperature (frequency) θT +25 ˚C ±5 ˚C Temperature coefficient (frequency) a -0.04 x 10-6 / ˚C2 Max. Load capacitance CL 7 pF, 12.5 pF Please specify Series resistance R1 65 kΩ Max. 70 kΩ to 25 kΩ Motional capacitance C1 1.7 fF Typ. 2.5 fF to 0.7 fF Shunt capacitance C0 1.3 pF Typ. 1.6 pF to 0.7 pF Insulation resistance IR 500 MΩ Min. Aging fa ±3 x 10-6 / year Max. Ta = +25 ˚C ±3 ˚C, first year Shock resistance S.R. ±8 x10-6 Max. 100 g dummy (Seiko Epson Standard) drop from 1500 mm height on to the concrete 3 directions 10 times. 4.9 ±0.1 3.2 Internal connection # 1 # 2 # 1 # 2 0.85 1.3 4.2 ∗Do not design any patterns on shaded area. Recommended soldering pattern (Unit: mm) External dimensions (Unit: mm) |
Аналогичный номер детали - FC255 |
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Аналогичное описание - FC255 |
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ссылки URL |
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