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FC-255 bảng dữ liệu(PDF) 1 Page - List of Unclassifed Manufacturers

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Giải thích chi tiết về linh kiện  THIN SMD LOW / MEDIUM FREQUENCY CRYSTAL UNIT
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FC-255 bảng dữ liệu(HTML) 1 Page - List of Unclassifed Manufacturers

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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)


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