Actual size
http://www.epsontoyocom.co.jp
Crystal unit Epson Toyocom
Product Number (please contact us)
MC-306 : Q13MC3061xxxx00
MC-405 : Q1xMC4051xxxx00
MC-406 : Q1xMC4061xxxx00
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 t (mm) ···MC-306
10.41 × 4.06 × 3.6 t (mm) ···MC-405 / 406
•Overtone order : Fundamental /Overtone (307.2 kHz)
•Applications : Clock and Microcomputer
MC-306 MC-405 / 406
S
p
ecifications
(
characteristics
)
Item Symbol Specifications Remarks
Nominal frequency range f_nom 32.768 kHz 20 kHz to 165 kHz
307.2 kHz(MC-405 / 406) Please contact us regarding available frequencies
Temperature
range Storage temperature T_stg -55 °C to +125 °C Store as bare product after unpacking
Operating temperature T_use -40 °C to +85 °C
Level of drive DL 1.0
μ
W 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 coeffi cient B -0.04
×
10-6 / °C2Max.
Load capacitance CL 6 pF to
∞
(standard :12.5 pF) Please specify
Motional resistance (ESR) R1 50 k
Ω
Max. 55 k
Ω
to 6 k
Ω
As per below table
Motional capacitance C1 1.8 fF Typ. 4.0 fF to 0.6 fF MC-306
2.0 fF Typ. MC-405 / 406
Shunt capacitance C0 0.9 pF Typ. 2.0 pF to 0.6 pF MC-306
0.85 pF Typ. MC-405 / 406
Frequency aging f_age ±3 × 10-
6
/ year Max.
±
5
×
10-
6
/ year Max. +25 °C, First year
Motional resistance
(
ESR
)
Frequency 20 kHz≤f_nom< 31.2 kHz 31.2 kHz≤f_nom< 4 0 kH z 40 kHz
≤
f_nom< 90 kHz 90 kHz
≤
f_nom< 130 kHz 130 kHz≤f_nom≤165 kHz 307.2 kHz
Motional resistance 55 kΩ Max. 35 kΩ Max. 20 k
Ω
Max. 12 k
Ω
Max. 10 kΩ Max. 6 k
Ω
Max.
External dimensions
(
Unit:mm
)
.
MC-306
Metal m ay b e exposed on t h e top or bott om of this pr od uc t.
This wil l not aff ect any qu alit y, reli ab il it y or el ectrical sp ec.
Do not connect # 2 and #3 to ext ernal 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 devic e.
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
Foot
p
rint
(
Recommended
)
(
Unit:mm
)
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
