Actual size
Crystal unit
Specifications (characteristics)
Item
Symbol
Specifications
Conditions / Remarks
FC-135R
FC-135
FC-255
Nominal frequency range
f_nom
32.768 kHz
32.768 kHz
32 kHz to
77.5 kHz
32.768 kHz
32 kHz to
100 kHz
Please contact us about available
frequencies.
Storage temperature
T_stg
-55 C to +125 C
Storage as single product.
Operating temperature
T_use
-40 C to +85 C
Level of drive
DL
0.5 W (1.0 W Max.)
0.5 W Max.
Please contact us if you require
1.0W Max.
Frequency tolerance
(standard)
f_tol
20 10-6
+25 C, DL=0.1 W
Please ask for tighter tolerance
Turnover temperature
Ti
+25 C 5 C
Parabolic coefficient
B
-0.04 10-6 / C2 Max.
Load capacitance
CL
7 pF, 9 pF, 12.5 pF
7 pF, 12.5 pF
Please specify
Motional resistance (ESR)
R1
50 k Max.
70 k Max.
70 k to
45 k
65 k Max.
70 k to
30 k
Motional capacitance
C1
3.4 fF Typ.
3.4 fF Typ.
3.7 fF to
1.6 fF
2.0 fF Typ.
2.3 fF to
0.6 fF
Shunt capacitance
C0
1.1 pF Typ.
1.0 pF Typ.
1.3 pF to
0.5 pF
1.3 pF Typ.
1.7 pF to
0.9 pF
Frequency aging
f_age
3 10-6 / year Max.
+25 C, First year
Product name FC-135R 32.768000kHz 12.5 +20.0-20.0
(Standard form) ① ② ③ ④
①Model ②Frequency ③Load capacitance(pF) ④Frequency tolerance(× 10-6, +25 C)
External dimensions (Unit:mm)
.
Footprint (Recommended) (Unit:mm)
kHz RANGE CRYSTAL UNIT
FC - 135R
FC - 135 / FC - 255
Frequency range : 32.768 kHz (32 kHz to 100 kHz)
External dimensions : 3.2 × 1.5 × 0.80 mm ···FC-135R/FC-135
: 4.9 × 1.8 × 0.80 mm ···FC-255
Overtone order : Fundamental
Applications : Small communications devices
Product Number (please contact us)
FC-135R : X1A000141xxxx00
FC-135 : Q1xFC1350xxxx00
FC-255 : Q1xFC2550xxxx00
1.0
1.8
2.5
3.2±0.1
1.5±0.1
0.8±0.1
C622J
0.75
1.7
#1
#2
FC-135R / FC135
#1
#2
Internal
Connection
FC-255
4.9±0.1
1.8±0.1
0.8±0.1
A501J
0.85
3.2
#1
#2
#1
#2
Internal
Connection
1.3
2.2
4.2
FC-255
FC-135R / FC-135
FC-255
FC-135R/FC-135
Do not design any circuit patterns in the shaded area.
