Crystal unit
kHz RANGE CRYSTAL UNIT
SMD
MC - 306
/
405
/
406
•Frequency
range
•Thickness
•Overtone
order
•Applications
•Lead(Pb)-free
32.768 kHz (20 kHz to 165 kHz)
2.54 mm Max.(MC-306)
3.60 mm Max.(MC-405
/
406)
:
Fundamental /Overtone (307.2 kHz)
:
Clock and Microcomputer
:
High melting temperature type solder
(Pb85 %) exempted by RoHS directive.
:
:
Actual size
MC-306
MC-405
/
406
Specifications (characteristics)
Item
Nominal frequency range
Temperature Storage temperature
range
Operating temperature
Level of drive
Frequency tolerance (standard)
Turnover temperature
Parabolic coefficient
Load capacitance
Motional resistance (ESR)
Motional capacitance
Shunt capacitance
Frequency aging
Symbol
f
T_stg
T_use
DL
f_tol
Ti
B
CL
R
1
C
1
C
0
f_age
Specifications
20 kHz to 165 kHz
32.768 kHz
307.2 kHz(MC-405
/
406)
-55
°C
to +125
°C
-40
°C
to +85
°C
1.0
µW
Max.
±20 ×
10
-6
,
±50 ×
10
-6
±50 ×
10
-6
,
±100 ×
10
-6
+25
°C ±5 °C
-0.04
×
10
-6
/ °C
2
Max.
6 pF to
∞
(standard :12.5 pF)
50 kΩ Max.
55 kΩ to 6 kΩ
1.8 fF Typ.
4.0 fF to 0.6 fF
2.0 fF Typ.
0.9 pF Typ.
2.0 pF to 0.6 pF
0.85 pF Typ.
-6
±3 ×
10 / year Max.
±5 ×
10
-6
/ year Max.
Remarks
Please contact us regarding available frequencies
Stored as bare product after unpacking
+25
°C,
DL=0.1
µW
Please specify
As per below table
MC-306
MC-405
/
406
MC-306
MC-405
/
406
+25
°C,
First year
Motional resistance (ESR)
Frequency
Motional resistance
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.
307.2 kHz
6 kΩ Max.
.
External dimensions
MC-306
#4
(Unit:mm)
MC-405
/
406
Internal connection in MC-405
#4
3.8 Max.
Internal connection
#4
#3
#1
#4
#3
#2
8.0 Max.
#3
32.768 k
571
E
#1
#2
32.768 k
E
6571A
9.60
10.41 Max.
#3
#2
4.06 Max.
#1
3.2
Internal connection in MC-406
#4
#1
#3
#2
#1
2.54 Max.
#2
2.38
0.5
5.5
3.6 Max.
3.15
1.9
(0.9)
(0.9)
2.54
2.54
0.2 Min.
0.51
2.29
0.51
Do not connect #2 and #3 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.
Do not connect #2 and #3 of MC-406 to external device.
The first digit of No. means:
5××××
6××××
MC-405
MC-406
Footprint (Recommended)
(Unit:mm)
MC-306
MC-405
MC-406
1.52
4.1
4.1
3.9
4.1
1.9
1.3
1.3
4.2
1.3
1.9
4.1
3.9
4.1
12
http://www.epsontoyocom.co.jp
1.52
0.8
Part Numbering System
* Standard KHz Crystals (Tuning Fork Crystal)
MC-306
Frequency Range:
K: In KHz to 4 Decimal Places
C-2: 20~165KHz
8~307.2KHz
C-4: 32~120KHz
8~192KHz
MC: 20~165KHz
(32~100KHz MC-206 only)
HTS: 40KHz
76.8000K
Freq. Tolerance@25C
A
: +/-20ppm
B:
+/-50ppm
Blank: +/-100PPM (Std)
-
Load Capacitance:
A: 12.5pf
B: 16.0pf
C: 18.0pf
D: 22.0pf
E: 6.0pf
F: Series
G: 20.0pf
H: 32.0pf
I: 33.0pf
J: 18.5pf
K: 10.0pf
L: 18.3pf
M: 100.0pf
N: 13.5pf
P: 11.0pf
Q: 28.0pf
R: 15.0pf
S:
9.6pf
T: 13.0pf
U: 47.0pf
V: 24.0pf
W: 12.0pf
X: 5.0pf
Y: 14.0pf
Z: 26.0pf
A
0
Tape & Reel Qty
(For MC type only)
0: 1000pcs per reel
3: 250pcs per reel
Crystal Package Type:
C-2
C-4
MC-206:
MC-306
MC-405
MC-406
HTS:
2 x 6mm
1.5 x 5mm
4pin SOP, 2.0mm Height
4pin “J” Lead SMD, 2.54mm Height
4pin “J” Lead SMD, 3.6mm Height
4pin “J” Lead SMD, 3.6mm Height
Temperature sensor
AA: 27.0pf
AB: 30.0pf
AC: 9.0pf
AD: 50.0pf
AE: 22.9pf
AF: 35.0pf
AG: 7.0pf
AH: 40.0pf
AI: 25.0pf
AJ: 8.0pf
AK: 10.5pf
AL: 9.5pf
AM: 9.2pf
AN: 7.8pf
AP: 10.7pf
* Not Applicable to the 32.768KHz Crystals
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