AT-CUT CRYSTAL UNIT
(SMD ・ Plastic Package)
CM309E
RoHS compliant
1,000pcs/reel
■ FEATURES
● Frequency range : 4.0 ~ 64.0MHz
● External dimensions (mm)
L : 11.7 x W : 4.8 x H : 3.7
● Applications
Consumer products
■ DIMENSION
■ SOLDER PAD LAYOUT
[mm]
[mm]
Do not connect to external terminals with #2 and #3.
■ STANDARD SPECIFICATIONS
Model
CM309E
Conditions
Please contact us for
frequencies available
at 25˚C
TOPR
4.0MHz ~ 29.999MHz (Fundamental)
30.0MHz ~ 64.0MHz (3rd Overtone)
±30ppm
below 5.5MHz:±50ppm
above 5.5MHz:±30ppm
-40℃ ~ +85℃
Storage Temperature Range
TSTR
-55℃ ~ +125℃
Motional (series) resistance
R1
Refer to the following table
at 25˚C
Load capacitance
CL
16.0pF / 18.0pF / Series
Please specify your requirement
Shunt capacitance
C0
5.0pF Max.
Level of drive
DL
100μW
Insulation Resistance
IR
500MΩMin.
DC100V±15V
Δf/f0
±5ppm Max.
25℃±3℃
Item
Nominal Frequency
Frequency Tolerance
Frequency Tolerance over
Operating Temperature Range
Operating Temperature Range
Aging (first year)
f0
Δf/f0
Δf/f0
-10℃~+60℃
■ MOTIONAL (SERIES) RESISTANCE (R1)
Freq. Range (MHz)
Mode
R1
4.0≦f0<5.5
5.5≦f0<6.0
Fundamental
Fundamental
150ΩMax.
100ΩMax.
6.0≦f0<10.0 10.0≦f0<12.0 12.0≦f0<16.0 16.0≦f0<30.0 30.0≦f0<36.0 36.0≦f0<64.0
Fundamental
Fundamental
80ΩMax.
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
60ΩMax.
Fundamental
50ΩMax.
Fundamental
40ΩMax.
3rd Overtone 3rd Overtone
100ΩMax.
80ΩMax.
■ PART NUMBERING SYSTEM
CM309E
20000000
Frequency Tolerance
(at 25℃)
Frequency
Please specify
the frequency
in Hz.
A
B
±30ppm
±50ppm
A B J T - □□□
Frequency Tolerance over
Operating Temp. Range
±30ppm
(STD)
A
Range -10℃ ~ +60℃
(STD)
±50ppm
CITIZEN
management code
Load capacitance (CL)
A
I
J
Series
16.0pF
18.0pF
Ref. Code for
internal use.
B
Range -10℃ ~ +60℃
±50ppm
G
Range -40℃ ~ +85℃
Package specification
±100ppm
H
Range -40℃ ~ +85℃
T
Only Tape & Reel
*Please contact us for specifications available.
■ Part Marking
■ Reflow profile
[standard]
C AAym
ff.fff M
C AA : Manufacture's ID Code
y : The last digit of production year
m : Production month (See Table.1)
ff.fff : Frequency
M : MHz
Table.1
Month
Code
Jan Feb
1
2
…
…
Sep Oct Nov Dec
9
X
Y
Z
■ Packing
Conforming to JIS C 0806 TB1208NEIAJ and RC-1009B TE1208N
Q'ty/reel
1,000
a
24.0
b
11.5
c
12.0
d (φ)
1.5
e
11.9
Product specifications are subject to change without notice.
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
Conforming to JIS C 0806 R12R and EIAJ RC-1009B R15
f
0.4
g
4.0
h
5°
j
4.9
k
5°
l
25.5
m (φ) n (φ)
330
100
Rev.3
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