Crystal unit
Product Number (please contact us)
MC-146 : Q1xMC1462xxxx00
MC-156 : Q1xMC1562xxxx00
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 Actual size
MC-146 MC-156
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.
-6 -6 -6 -6
Frequency tolerance (standard) f_tol 20 10 , 50 10 50 10 , 100 10 +25 C, DL=0.1 W
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 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
-6 -6
Frequency aging f_age 3 10 / year Max. 5 10 / year Max. +25 C, First year
Product name MC-146 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)
.
MC-146 MC-156
Internal connection
7.1 Max.
Internal connection
(TOP VIEW)
#4 #3
#4
#3
(TOP VIEW)
#4
#3
#4
#3
E A 9 9
E A 9 6
#2
#1
6.7
#1 #2
#1
#2
7.0 Max.
0.1
0.1
#1 #2
0.4
0.4
0.4
5.08
0.2 0.2 (0.75) 1.6
(0.75)
#1
#2
#4 #3
0.2
Do not connect #2 and #3 to external device.
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.
Footprint (Recommended) (Unit:mm)
MC-146
MC-156
1.2 1.2
5.1 1.2 3.88 1.2
0.6 0.6
0.55
0.3
0.3
0.25
0.3
0.15
1.5 Max.
1.4 Max.
2.50
1.30
1.5 Max. 3.3 Max.
1.5 1.0 1.5