Actual si
ze
http://www.
e
psontoyocom.co.jp
Crystal un
it
S
pecific
ations (ch
aracteristics)
Item
Symbol
S
pe
cifications
Condi
tions /
Remarks
Nominal
fr
equency range
f_nom
32.768 kHz
20 kHz to 165 kHz
Please con
tact us r
e
garding available frequencie
s
S
to
r
a
ge t
e
mperature
T_stg
-
55
C to +125
C
S
to
r
e
as bare product.
Opera
ting t
empe
rature
T_u
s
e
-
40
C to +85
C
Level
of driv
e
DL
1.0
W
Max
.
Frequen
cy t
ole
ranc
e
(standard)
f_tol
20
10
-6
,
50
10
-6
50
10
-6
,
100
10
-6
+25
C, D
L=0.1
W
T
urnover tempe
rature
T
i
+25
C
5
C
Paraboli
c c
oef
ficient
B
-0.04
10
-6
/
°C
2
Max.
Load capa
citan
c
e
CL
6 pF to
(standa
rd :12.5 pF)
Please spe
cify
Motional
r
e
sist
a
nce (ESR)
R
1
50 k
Max
.
As pe
r below table
Motional
c
apa
citance
C
1
1.8 fF
T
yp.
4.0 fF to
0.6 fF
MC
-
306
2.0 fF
T
yp.
MC
-
405
/
40
6
Shunt ca
pacitance
C
0
0.9 pF
T
yp.
2.0 pF
t
o
0.6 pF
MC
-
306
0.85 pF
T
yp
.
MC
-
405
/
406
Frequen
cy aging
f_age
3
10
-6
/
year Max
.
5
10
-6
/ year Max
.
+25
C, F
irst y
ea
r
Motional resistan
ce (ESR)
Frequen
cy
20 kHz
f_no
m< 31.2 kHz
31.2 kHz
f
_nom
<
40 kHz
40 kHz
f_no
m< 9
0 kHz
90 kHz
f_no
m< 1
30 kHz
130
kHz
f_nom
165 kHz
Motional
r
e
sist
a
nce
55 k
Max
.
35 k
Max
.
20 k
Max
.
12 k
Max
.
10 k
Max
.
External dimensions
(Unit:mm)
.
F
o
o
t
p
r
i
n
t
(
R
e
c
o
m
m
e
n
d
e
d
)
(Unit:mm)
MC
-
306
MC
-
405
/
40
6
MC
-
306
Metal may be exposed on the t
op or bottom of this product.
This will not affect any qu
ality
,
reliability or el
ectrical spec.
Do not connect #2
and #3 to external device.
Internal connection
(TOP VI
EW
)
#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
5
7
1
Do not connect #2
and #3 of MC-406 to extern
al 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 VI
EW
)
Internal connection in MC-
405
(TOP VI
EW
)
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 RAN
G
E CR
YST
A
L UNIT
SMD
MC
-
306
MC
-
405
/
MC
-
406
Frequen
c
y 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
:
Fun
d
amental
Appli
c
at
ions
:
Clock an
d
Microcomputer
Product
N
umber (please
co
ntact us
)
MC-
306
: Q1xMC3061xxxx00
MC-
405
: Q1xMC4051xxxx00
MC-
406
: Q1xMC4061xxxx00
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