Crystal unit
Product Number (please contact us)
kHz RANGE CRYSTAL UNIT
FC-12D: X1A000111xxxx00
FC-12M: X1A0000x1xxxx00
FC - 12D
/
FC - 12M
Frequency
range
:
External
dimensions
:
:
Overtone
order
:
Applications
:
:
32.768 kHz (32 kHz to 77.5 kHz)
2.05 × 1.25 × 0.35 mm···FC-12D
2.05 × 1.2 × 0.6 mm···FC-12M
Fundamental
Smart card
(Please
contact us for
except Smart card use.)···FC-12D
Small devices···FC-12M
Actual size
FC-12D FC-12M
Specifications (characteristics)
Item
Nominal frequency range
Storage temperature
Operating temperature
Level of drive
Frequency tolerance
(standard)
Turnover temperature
Parabolic coefficient
Load capacitance
Motional resistance (ESR)
Motional capacitance
Shunt capacitance
Frequency aging
Product name
(Standard form)
Symbol
f_nom
T_stg
T_use
DL
f_tol
Ti
B
CL
R
1
C
1
C
0
f_age
FC-12D
32.768 kHz
Specifications
FC-12M
32.768 kHz
-55
C
to +125
C
-40
C
to +85
C
32 kHz to
77.5 kHz
Conditions / Remarks
Please contact us about available
frequencies.
Storage as single product.
0.25
W
Max.
±20 × 10
-6
0.5
W
Max.
±20 × 10
-6
±30 × 10
+25
C
±5
C
-6
2
-0.04
10 /
C
Max.
-6
+25
C,
DL=0.1
W
Please ask for tighter tolerance
7 pF, 9pF, 12.5pF
75 k Max.
3.7 fF Typ.
0.8 pF Typ.
6.4 fF Typ.
1.3 pF Typ.
12.5pF
90 k Max.
90 k to 65 k
7.0 fF to 2.7 fF
1.6 pF to 0.8pF
Please specify
±3 × 10 / year Max.
-6
+25
C,
First year
FC-12D 32.768000kHz 12.5 +20.0-20.0
①
②
③
④
①Model
②Frequency
③Load
capacitance(pF)
④Frequency
tolerance(
×
10
,
+25
C)
(Unit: mm)
FC-12M
Internal connection
(TOP VIEW)
-6
.
External dimensions
FC-12D
1.25±0.1
#3
#2
2.05±0.05
0.6 Max.
1.2±0.05
A115J
2.05±0.1
#4
#1
A634J
#1
#2
0.35 Max.
Pin #2 is connected to the
device lid.
Please connect to GND.
Do not connect #4 externally.
#1
0.35
0.9
1.0
#1
#2
#2
#3
#4
0.495
0.525
(Unit: mm)
FC-12M
0.55
Footprint (Recommended)
FC-12D
0.90 0.65
*Do
not design any
circuit patterns in the
shaded area.
1.5
0.7
*Do
not design any
circuit patterns in the
shaded area.
0.35
1.4
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