Actual size
http://www.epsontoyocom.co.jp
Crystal unit Epson Toyocom
Specifications (characteristics)
Item
Symbol
Specifications
Conditions / Remarks
Nominal frequency range
f_nom
32 kHz to 100 kHz
Please contact us for inquiries regarding available
frequencies
Storage temperature
T_stg
-55 C to +125 C
Store as bare 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
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 to 25 k
Motional capacitance
C1
2.5 fF to 0.6 fF
Shunt capacitance
C0
1.2 pF to 0.5 pF
Frequency aging
f_age
5 10-6 / year Max.
+25 C, First year
External dimensions (Unit:mm)
.
Footprint (Recommended) (Unit:mm)
MC-146
MC-156
kHz RANGE CRYSTAL UNIT
LOW PROFILE SMD
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
Metal may be exposed on the top or bottom of this product. This will not affect any quality, reliability or electrical spec.
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 : Q1xMC146xxxxx00
MC-156 : Q1xMC156xxxxx00