Actual size
http://www.epsontoyocom.co.jp
Crystal unit
Specifications (characteristics)
Item
Symbol
Specifications
Conditions / Remarks
Nominal frequency range
f_nom
20 kHz to 165 kHz
Please contact us 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.
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
6 pF to (standard :12.5 pF)
Please specify
Motional resistance (ESR)
R1
As per below table
Motional capacitance
C1
4.0 fF to 0.6 fF
MC-306
MC-405 / 406
Shunt capacitance
C0
2.0 pF to 0.6 pF
MC-306
MC-405 / 406
Frequency aging
f_age
5 10-6 / year Max.
+25 C, First year
Motional resistance (ESR)
Frequency
20 kHzf_nom< 31.2 kHz
31.2 kHzf_nom< 40 kHz
40 kHzf_nom< 90 kHz
90 kHzf_nom< 130 kHz
130 kHzf_nom165 kHz
Motional resistance
55 k Max.
35 k Max.
20 k Max.
12 k Max.
10 k Max.
External dimensions (Unit:mm)
.
Footprint (Recommended) (Unit:mm)
MC-306
MC-405 / 406
MC-306
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.
Internal connection
(TOP VIEW)
#4
#1
#2
#3
1.9
(0.9)
(0.9)
5.5
0.5
2.54 Max.
2.38
8.0 Max.
#4
#1
#2
#3
3.8 Max.
3.2
32.768 k
E 571
Do not connect #2 and #3 of MC-406 to external device.
The first digit of No. means: 5×××× MC-405
6×××× MC-406
MC-405 / 406
#4
#1
#2
#3
#4
#1
#2
#3
Internal connection in MC-406
(TOP VIEW)
Internal connection in MC-405
(TOP VIEW)
0.2 Min.
3.6 Max.
3.15
2.54
2.54
4.06 Max.
#1
#4
#3
#2
10.41 Max.
9.60
32.768 k
E 6571A
0.51
0.51
2.29
MC-306
MC-405
1.52
0.8
4.1
3.9
4.1
1.52
4.1
3.9
4.1
4.1
MC-406
1.9
1.9
1.3
4.2
1.3
1.3
kHz RANGE CRYSTAL UNIT
SMD
MC - 306
MC - 405 / MC - 406
Frequency range : 32.768 kHz (20 kHz to 165 kHz)
Thickness : 8.0 × 3.8 × 2.54 mm ···MC-306
10.41 × 4.06 × 3.6 mm ···MC-405 / 406
Overtone order : Fundamental
Applications : Clock and Microcomputer
Product Number (please contact us)
MC-306 : Q1xMC3061xxxx00
MC-405 : Q1xMC4051xxxx00
MC-406 : Q1xMC4061xxxx00