Crystal unit
kHz RANGE CRYSTAL UNIT
SMD
MC-306
MC-405
/
MC-406
32.768 kHz (20 kHz to 165 kHz)
2.54 mm Max.(MC-306)
•Frequency range
•Thickness
:
:
Actual size
MC-306
3.60 mm Max.(MC-405 406)
Fundamental /Overtone (307.2 kHz)
Clock and Microcomputer
/
MC-405 / 406
•Overtone order
•Applications
:
:
Specifications (characteristics)
Item
Symbol
Specifications
20 kHz to 165 kHz
307.2 kHz(MC-405 406)
Remarks
Nominal frequency range
f
32.768 kHz
Please contact us regarding available frequencies
Store as bare product after unpacking
/
Temperature Storage temperature
T_stg
T_use
DL
f_tol
Ti
-55 °C to +125 °C
-40 °C to +85 °C
1.0 µW Max.
range
Level of drive
Operating temperature
Frequency tolerance (standard)
Turnover temperature
Parabolic coefficient
±20 × 10-6, ±50 × 10-6
±50 × 10-6, ±100 × 10-6
+25 °C, DL=0.1 µW
+25 °C ±5 °C
B
-0.04 × 10-6 / °C2 Max.
Load capacitance
Motional resistance (ESR)
CL
6 pF to ∞ (standard :12.5 pF)
Please specify
As per below table
MC-306
R
1
50 kΩ Max.
55 kΩ to 6 kΩ
1.8 fF Typ.
2.0 fF Typ.
Motional capacitance
C
1
4.0 fF to 0.6 fF
MC-405
MC-306
MC-405
/
406
0.9 pF Typ.
Shunt capacitance
Frequency aging
C
0
2.0 pF to 0.6 pF
±5 × 10-6 / year Max.
0.85 pF Typ.
/
406
f_age
±3 × 10-6 / year Max.
+25 °C, First year
Motional resistance (ESR)
Frequency
Motional resistance
307.2 kHz
6 kΩ Max.
20 kHz≤f< 31.2 kHz
55 kΩ Max.
31.2 kHz≤f< 40 kHz
35 kΩ Max.
40 kHz≤f< 90 kHz
20 kΩ Max.
90 kHz≤f< 130 kHz
12 kΩ Max.
130 kHz≤f≤165 kHz
10 kΩ Max.
External dimensions
(Unit:mm)
.
Internal connection in MC-405
MC-405 / 406
MC-306
8.0 Max.
#4
#1
#3
#2
#3
#2
#4
#3
#2
Internal connection
#4
32.768 k
6571A
32.768 k
E
#3
#4
E
Internal connection in MC-406
571
#1
#3
#2
#4
#1
9.60
10.41 Max.
#1
#1
#2
0.5
0.51
0.51
1.9
5.5
(0.9)
(0.9)
2.54
2.54
2.29
Do not connect #2 and #3 to external device.
Do not connect #2 and #3 of MC-406 to external device.
Metal may be exposed on the top or bottom of this product.
This will not affect any quality, reliability or electrical spec.
The first digit of No. means:
5×××× MC-405
6×××× MC-406
Footprint (Recommended)
(Unit:mm)
MC-306
MC-405
MC-406
4.1
3.9
4.1
4.1
3.9
4.1
1.3
4.2
1.3
http://www.epsontoyocom.co.jp
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