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15
■FEATURES
7Embeded with heat resistant cylinder type crystal
bring highly stable characteristics.
7Automatic mounting and reflowable type.
7Suitable for various applications such as
communication devices, AV devices, automotive
devices and measuring instruments.
f0
△f/f0
△f/f0
TOPR
TSTR
R1
CL
C0
DL
IR
△f/f0
CM309S
3.5MHz〜34.0MHz（Fundamental）
3.5MHz≦f0＜4.0MHz
Fundamental Fundamental Fundamental Fundamental
Fundamental 3rdOvertone
3rdOvertone
4.0MHz ≦ f0＜ 6.0MHz 6.0MHz≦f0＜10MHz 10MHz≦f0＜27MHz 27MHz≦f0＜36MHz 36MHz≦f0≦70MHz
Needtocontactusfor
theavailablefrequency
27.0MHz〜70.0MHz（3rdOvertone）
50ΩMax. 100ΩMax. 80ΩMax.50ΩMax.100ΩMax.150ΩMax.200ΩMax.
at 25˚C
−10℃〜＋60℃
Seefigure3inP4
at 25˚C
Needtospecifyyourrequirement
DC100V±15V
25℃±3℃
±30ppm
below6.0MHz：±50ppm
above6.0MHz：±30ppm
−40℃〜＋85℃
−55℃〜＋125℃
Refertothefollowingtable
16.0pF,18.0pF
7.0pFMax.
100μW
500MΩMin.
±5ppmMax.
4.4±0.2
3.6±0.1
12.4±0.1
9.4±0.1（1.5） （1.5）
0.8
#1 #2
#1 #2
#4 #3
#4 #3
0.8
（1.0）
1.8 1.87.6
1.8 1.81.7
Internalconnection
■DIMENSION [mm]
CM309S
■SOLDER PAD LAYOUT [mm]
∗Donotconnecttoexternalwith#2and#3
Life-size
AT-CUT CRYSTAL UNIT (SMD • Plastic Package)
■MOTIONAL (SERIES) RESISTANCE (R1)
■STANDARD SPECIFICATIONS
Nominal Frequency
Frequency Tolerance
Frequency Tolerance
over Operating
Temperature Range
Operating Temperature Range
Storage Temperature Range
Motional (series) resistance
Load capacitance
Shunt capacitance
Level of drive
Insulation Resistance
Aging (first year)
Item Model Conditions
Frequency Range
Mode
R1
1000pcs/reel
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Quartz Crystal Blank Crystal Oscillator List
In order to use the product correctly Glossary
Packing specification Notes Type of cut crystal
Equivalent circuit of quartz crystal
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Cutting direction and frequency Temperature characteristics
Te st C ir cu i t Output waveform Part Numbering System
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