Datasheet
Actual size
Crystal unit
Crystal unitCrystal unit
Crystal unit
Specifications (characteristics)
Item Symbol
Specifications
Conditions / Remarks
FC
-
135R
FC
-
135
Nominal frequency range f_nom 32.768 kHz 32.768 kHz
32 kHz to
77.5 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 (+105 °C) Please contact us about +85 °C < T_use
Level of drive DL 0.5 µW (1.0 µW Max.)
Please contact us if you require
1.0
µ
W Max.
Frequency toleran
ce
(standard)
f_tol ±20 × 10
-6
+25
°
C, DL=0.1
µ
W
Please ask
for
tighter tolerance
Turnover temperature Ti +25 °C ±5 °C
Parabolic coefficient B -0.04 × 10
-6
/ °C
2
Max.
Load capacitance CL 7 pF, 9 pF, 12.5 pF Please specify
Motional resistance (ESR) R1 50 kΩ Max. 70 kΩ Max.
70 k
Ω
to
45 kΩ
Motional capacitance C1 3.4 fF Typ. 3.4 fF Typ.
3.7 fF to
1.6 fF
Shunt capacitance C0 1.1 pF Typ. 1.0 pF Typ.
1.3 pF to
0.5 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)
Model Frequency Load capacitance(pF) Frequency tolerance(
×
10
-6
,
+25 °C)
External dimensions
(
Unit:mm
)
Fo
otprint
(
Recommended
)
(Unit:mm)
kHz RANGE CRYSTAL UNIT
FC
-
135R
/
FC
-
135
•Frequency range : 32.768 kHz (32 kHz to 100 kHz)
•External dimensions : 3.2 × 1.5 × 0.80 mm ···FC-135R/FC-135
•Overtone order : Fundamental
•Applications : Small communications devices
Product Number (please contact us)
FC-135R : X1A000141xxxx00
FC-135 : Q1xFC1350xxxx00
FC-135R/FC-135
1.0
1.8
2.5
FC-135R / FC-135
3.2±0.1
1.5±0.1
0.8±0.1
C622J
0.75
1.7
#1
#2
FC-135R / FC-135
#1
#2
Internal
Connection
∗Do not design any circuit patterns in the shaded area.