Actual size
Crystal unit
Specifications (characteristics)
Item
Symbol
Specifications
Conditions / Remarks
Nominal frequency range
f_nom
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
1.0 W Max.
Operating Drive level 0.5 W Max.
Frequency tolerance (standard)
f_tol
20 10-6, 50 10-6
50 10-6, 100 10-6
+25 C, DL=0.1 W
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
Please specify
Motional resistance (ESR)
R1
65 k Max.
65 k to 25 k
Motional capacitance
C1
1.9 fF Typ.
2.5 fF to 0.6 fF
Shunt capacitance
C0
0.8 pF Typ.
1.2 pF to 0.5 pF
Frequency aging
f_age
3 10-6 / year Max.
5 10-6 / year Max.
+25 C, First year
Product name MC-146 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)
MC-146
MC-156
kHz RANGE CRYSTAL UNIT
MC - 146 / MC - 156
Frequency range : 32.768 kHz (32 kHz to 100 kHz)
External dimension : 7.0 × 1.5 × 1.4 mm ···MC-146
: 7.1 × 3.3 × 1.5 mm ···MC-156
Overtone order : Fundamental
Applications : Small communications devices
#1
#2
#3
#4
2.50
3.3 Max.
1.30
1.5 Max.
(0.75)
1.6
5.08
7.1 Max.
0.4
(0.75)
MC-156
#1
#2
#4
#3
Internal connection
(TOP VIEW)
0.55
6.7
#1
#2
#3
#4
1.5 Max.
0.15
1.4 Max.
#1
0.4
0.1
0.1
7.0 Max.
0.3
0.3
#4
#3
#2
0.4
0.25
0.2
0.2
0.2
#1
#2
#4
#3
Internal connection
(TOP VIEW)
MC-146
The metal case inside of the molding compound may be exposed on the top or bottom of this product.
This purely cosmetic and does not have any effect on quality, reliability or electrical specs.
Do not connect #2 and #3 to external device.
E A 9 9
E A 9 6
MC-146
MC-156
1.2
5.1
1.2
0.6
0.6
0.3
1.2
3.88
1.5
1.5
1.0
1.2
Product Number (please contact us)
MC-146 : Q1xMC1462xxxx00
MC-156 : Q1xMC1562xxxx00
