FC255 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – THIN SMD LOW / MEDIUM FREQUENCY CRYSTAL UNIT

THIN SMD LOW / MEDIUM FREQUENCY CRYSTAL UNIT
FC-255
Product number (please refer to page 1)
Q1xFC255xxxxx00
• 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.
Crystal unit
Actual size
 Specifications (characteristics)
Item
Symbol
Nominal frequency range
f
Temperature
range
Storage temperature TSTG
Operating temperature TOPR
Maximum drive level
GL
Frequency tolerance (standard)
Δf/f
Peak temperature (frequency)
θT
Temperature coefficient (frequency)
a
Load capacitance
CL
Series resistance
R1
Motional capacitance
C1
Shunt capacitance
C0
Insulation resistance
IR
Aging
fa
Shock resistance
S.R.
 External dimensions
Specifications
32.768 kHz
32.000 kHz
-55 ˚C to +125 ˚C
-40 ˚C to +85 ˚C
0.5 µW Max.
±20 x 10^-6
±50 x 10^-6,±100 x 10^-6
+25 ˚C ±5 ˚C
-0.04 x 10^-6 / ˚C² Max.
7 pF, 12.5 pF
65 kΩ Max.
70 kΩ to 25 kΩ
1.7 fF Typ.
2.5 fF to 0.7 fF
1.3 pF Typ.
1.6 pF to 0.7 pF
500 MΩ Min.
±3 x 10^-6 / year Max.
±8 x10^-6 Max.
Remarks
please contact us for inquiries
about the available frequency
Stored as bare product after unpacking
Ta = +25 ˚C, DL = 0.1 µW
Please ask tighter tolerance
Please specify
Ta = +25 ˚C ±3 ˚C, first year
100 g dummy (Seiko Epson Standard) drop from
1500 mm height on to the concrete 3 directions
10 times.
(Unit: mm)  Recommended soldering pattern (Unit: mm)
4.9±0.1
0.85
#1
#2
3.2
Internal connection
#1
#2
1.3
4.2
∗Do not design any patterns on shaded area.
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