Crystal unit
Product Number (please contact us)
FC-135R : X1A000141xxxx00
kHz RANGE CRYSTAL UNIT FC-135 : Q1xFC1350xxxx00
FC-255 : Q1xFC2550xxxx00
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
Actual size
: 4.9 1.8 0.80 mm FC-255
FC-135R/FC-135 FC-255
Overtone order : Fundamental
Applications : Small communications devices
Specifications (characteristics)
Specifications
Item Symbol Conditions / Remarks
FC-135R FC-135 FC-255
32 kHz to 32 kHz to Please contact us about available
Nominal frequency range f_nom 32.768 kHz 32.768 kHz 32.768 kHz
100 kHz frequencies.
77.5 kHz
Storage temperature T_stg -55 C to +125 C Storage as single product.
Operating temperature T_use -40 C to +85 C
Please contact us if you require
Level of drive DL 0.5 W (1.0 W Max.) 0.5 W Max.
1.0 W Max.
Frequency tolerance -6 +25 C, DL=0.1 W
f_tol 20 10
(standard) Please ask for tighter tolerance
Turnover temperature Ti +25 C 5 C
-6 2
Parabolic coefficient B -0.04 10 / C Max.
Load capacitance CL 7 pF, 9 pF, 12.5 pF 7 pF, 12.5 pF Please specify
70 k to
70 k to
Motional resistance (ESR) R1 50 k Max. 70 k Max. 65 k Max.
45 k 30 k
3.7 fF to 2.3 fF to
Motional capacitance C1 3.4 fF Typ. 3.4 fF Typ. 2.0 fF Typ.
1.6 fF 0.6 fF
1.3 pF to 1.7 pF to
Shunt capacitance C0 1.1 pF Typ. 1.0 pF Typ. 1.3 pF Typ.
0.5 pF 0.9 pF
-6
Frequency aging f_age 3 10 / year Max. +25 C, First year
Product name FC-135R 32.768000kHz 12.5 +20.0-20.0
(Standard form)
-6
Model Frequency Load capacitance(pF) Frequency tolerance( 10 , +25 C)
External dimensions (Unit:mm)
.
FC-255
FC-135R / FC135
A501J
C622J
4.90.1
3.20.1
3.2
1.7
Internal
Internal
Connection
Connection
#1
#2
#1 #2
#1
#2
#1
#2
0.85
0.75
Footprint (Recommended) (Unit:mm)
1.0 1.3
FC-135R / FC-135 FC-255
2.5 4.2
Do not design any circuit patterns in the shaded area.
1.50.1
0.80.1
1.8
1.80.1
0.80.1
2.2