T E L : + 4 4 1 6 3 5 5 2 8 5 2 0 FA X : + 4 4 1 6 3 5 5 2 8 4 4 3
Specifications
Item
Symbol
Specifications
Remarks
Nominal frequency
f
32.768kHz
20.000kHz to 165.000kHz
Not every frequency
available
Temperature range:
Storage temperature
T
STG
-55C to +125C
Operating temperature
T
OPR
-40C to +85C
Maximum drive level
GL
1.0W MAX
Soldering condition
T
SOL
Two times at under 260C within 10 sec or under 230C within 3 min
Frequency tolerance (standard)
f/f
10ppm or 20ppm or 50ppm
100ppm
Ta=25C, DL = 1.0W
Turnover temperature (frequency)
T
25C 5C
25C TYP
Temperature coefficient (frequency)
a
-0.04ppm/C
2
MAX
Load capacitance
CL
3pF to
Please specify
Series resistance
R
1
50K
50K
to 8K
Motional capacitance
C
1
1.8fF
2.1fF to 0.6fF
Shunt capacitance
C
1
0.85pF TYP
1.0pF to 0.6pF
Insulation resistance
IR
100M
MIN
Aging
fa
3ppm/year MAX
5ppm/year MAX
Ta = 25C 3C, first year
Shock resistance
S.R.
5ppm MAX
Drop test of 3 times on a hard
board from 75cm height or
excitation test with 3000G x
3mS x 1/2 sine wave
x 3 directions
Low Frequency MC306 Series
Features
Frequency range 20kHz-165kHz
Photolithography finish allows uniform and
stable performance
Excellent shock resistance and environmental
capability
Ex-stock availability
Suitable for automatic insertion
Industrial operating temperature range as
standard
Surface Mount Quartz Cr ystals - Seiko Epson
Dimensions (mm)
ACT Stock Numbers
32.768kHz MC306 20ppm C
L
12.5pF DG00003DZ
32.768kHz MC306 50ppm C
L
12.5pF DG00003EC
Internal Connection
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