Actual size
http://www.epsontoyocom.co.jp
Crystal unit
Crystal unitCrystal unit
Crystal unit
7
S
p
ecifications
(
characteristics
)
Item Symbol Specifications Remarks
Nominal frequency range f 32.768 kHz 20 kHz to 165 kHz
307.2 kHz(MC-405
/
406) Please contact us regarding available frequencies
Storage temperature T_stg -55 °C to +125 °C Store as bare product after unpacking Temperature
range Operating temperature T_use -40 °C to +85 °C
Level of drive DL 1.0 µW Max.
Frequency tolerance (standard) f_tol ±20 × 10
-6
, ±50 × 10
-6
±50 × 10
-6
, ±100 × 10
-6
+25 °C, DL=0.1 µW
Turnover temperature Ti +25 °C ±5 °C
Parabolic coefficient B -0.04 × 10
-6
/ °C
2
Max.
Load capacitance CL 6 pF to ∞ (standard :12.5 pF) Please specify
Motional resistance (ESR) R
1
50 kΩ Max. 55 kΩ to 6 kΩ As per below table
1.8 fF Typ. MC-306
Motional capacitance C
1
2.0 fF Typ. 4.0 fF to 0.6 fF MC-405
/
406
0.9 pF Typ. MC-306
Shunt capacitance C
0
0.85 pF Typ. 2.0 pF to 0.6 pF MC-405
/
406
Frequency aging f_age ±3 × 10
-6
/ year Max. ±5 × 10
-6
/ year Max. +25 °C, First year
Mo t ional resi stance
(
ESR
)
Frequency 20 kHz≤f< 31.2 kHz 31.2 kHz≤f< 40 kHz 40 kHz≤f< 90 kHz 90 kHz≤f< 130 kHz 130 kHz≤f≤165 kHz 307.2 kHz
Motional resistance 55 kΩ Max. 35 kΩ Max. 20 kΩ Max. 12 kΩ Max. 10 kΩ Max. 6 kΩ Max.
External dimensions
(
Unit:mm
)
.
Foot
p
rin
t
(
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
#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
Internal connection in MC- 405
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 : 2.54 mm Max.(MC-306)
3.60 mm Max.(MC-405
/
406)
•Overtone order : Fundamental /Overtone (307.2 kHz)
•Applications : Clock and Microcomputer
Part Numbering System
* Standard KHz Crystals (Tuning Fork Crystal)
MC-306 76.8000K A 0-
Crystal Package Type:
C-2 2 x 6mm
C-4 1.5 x 5mm
MC-206: 4pin SOP, 2.0mm Height
MC-306 4pin “J” Lead SMD, 2.54mm Height
MC-405 4pin “J” Lead SMD, 3.6mm Height
MC-406 4pin “J” Lead SMD, 3.6mm Height
HTS: Temperature sensor
Frequency Range:
K: In KHz to 4 Decimal Places
C-2: 20~ 1 65 KH z
8~307.2KHz
C-4: 32~ 1 20 KH z
8~192KHz
MC: 20 ~165KHz
(32~100KHz MC-206 only)
HTS: 40KHz
Freq. Tolerance@25C
A : +/-20ppm
B: +/-50ppm
Blank: +/-100PPM (Std)
Load Capacita nce:
A: 12.5pf AA: 27.0pf
B: 16.0pf AB: 30.0pf
C: 18.0pf AC: 9.0pf
D: 22.0pf AD: 50.0pf
E: 6.0pf AE: 22.9pf
F: Series AF: 35.0pf
G: 20.0pf AG: 7.0pf
H: 32.0pf AH: 40.0pf
I: 33.0pf AI: 25.0pf
J: 18.5pf AJ: 8.0pf
K: 10.0pf AK: 10.5pf
L: 18.3pf AL: 9.5pf
M: 100.0pf AM: 9.2pf
N: 13.5pf AN: 7.8pf
P: 11.0pf AP: 10.7pf
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
Tape & Reel Qty
(For MC type only)
0: 1000pcs per reel
3: 250pcs per reel
* Not Applicable to the 32.768KHz Crystals
