AT-CUT CRYSTAL UNITS
(Cylinder Type)
CSA-310
.
CSA-309
■
FEATURES
7High
performance miniature crystal units with
Citizen's ultra-precise processing technology.
7High-stability
assured with tight vacuum sealing.
7Suitable
for various applications.
Life-size
■
DIMENSION [mm]
+0.07
ø0.32
-0.03
■
SOLDER PAD LAYOUT [mm]
+0.07
ø0.32
-0.03
8.8±0.2
1.1±0.2
10.0±0.5
ø3.0±0.2
10.3±0.2
1.1±0.2
10.0±0.5
CSA-310
ø3.0±0.2
CSA-309
■
STANDARD SPECIFICATIONS
Item
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)
Model
CSA-310
3.5MHz∼4.0MHz
CSA-309
4.001MHz∼34.0MHz Fundamental）
（
27.0MHz∼70.0MHz 3rd Overtone）
（
±30ppm
Conditions
Need to contact us for
the available frequency
f
0
△
f/f
0
△
f/f
0
at 25˚C
−
10℃∼
＋
60℃
below 6.0MHz ±50ppm
：
above 6.0MHz ±30ppm
：
−
20℃∼
＋
70℃
−
40℃∼
＋
85℃
See figure 3 in P4
T
OPR
T
STR
R
1
C
L
C
0
D
L
I
R
△
f/f
0
Refer to the following table
16.0pF, 18.0pF
5.0pF Max.
100μW
500MΩMin.
±5ppm Max.
at 25˚C
Need to specify your requirement
DC100V±15V
25℃±3℃
■
MOTIONAL (SERIES) RESISTANCE (R
1
)
Frequency Range
Mode
R
1
3.5MHz≦f
0
＜4.0MHz 4.0MHz≦f
0
＜6.0MHz 6.0MHz≦f
0
＜10MHz 10MHz≦f
0
＜27MHz
Fundamental
200ΩMax.
Fundamental
150ΩMax.
Fundamental
100ΩMax.
Fundamental
50ΩMax.
27MHz≦f
0
＜36MHz
Fundamental 3rd Overtone
50ΩMax. 100ΩMax.
36MHz≦f
0
≦70MHz
3rd Overtone
80ΩMax.
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17
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