AT-CUT CRYSTAL UNIT
RoHS compliant
(Metal-can Type)
HC-49/U-S
■
FEATURES
● Frequency range : 3.5 ½ 50.0MH½
● External dimensions (mm)
L : 11.5 x W : 4.66 x H : 3.5
● Applications
Consumer products
■
DIMENSION
[mm]
■
STANDARD SPECIFICATIONS
Item
Model
HC-49/U-S
3.5MHz ½ 30.0MHz (Fundamental)
30.0MHz ½ 50.0MHz (3rd Overtone)
±30ppm
below 6.0MHz:±50ppm
above 6.0MHz:±30ppm
-20℃ ½ +70℃
-40℃ ½ +85℃
Refer to the following table
Fundamental:10.0pF ½ ∞
3rd Overtone:5.0pF ½ ∞
7.0pF Max.
100μW
500MΩMin.
±5ppm Max.
Conditions
Please contact us for
frequencies available
at 25˚C
-10℃½+60℃
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)
f
0
Δf/f
0
Δf/f
0
T
OPR
T
STR
R
1
C
L
C
0
D
L
I
R
Δf/f
0
at 25˚C
Please specify your requirement
DC100V±15V
25℃±3℃
■
MOTIONAL (SERIES) RESISTANCE (R
1
)
Freq. Range
(MHz)
Mode
R
1
3.5≦f
0
＜4.0
Fundamental
200ΩMax.
4.0≦f
0
＜6.0
Fundamental
150ΩMax.
6.0≦f
0
＜10.0
Fundamental
100ΩMax.
10.0≦f
0
＜14.0
Fundamental
80ΩMax.
14.0≦f
0
＜30.0
Fundamental
50ΩMax.
30.0≦f
0
＜36.0
3rd Overtone
140ΩMax.
36.0≦f
0
≦50.0
3rd Overtone
100ΩMax.
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
■
PART NUMBERING SYSTEM
HC-49/U-S
Frequency Tolerance
（at 25℃)
20000000
A B J B - □□□
CITIZEN
management code
Frequency
Frequency Tolerance over
Operating Temp. Range
Load capacitance (CL)
Please specify
the frequency
in Hz.
A
B
±30ppm
±50ppm
(STD)
±30ppm
A
Range -10℃ ½ +60℃
(STD)
±50ppm
B
Range -10℃ ½ +60℃
I
J
K
16.0pF
18.0pF
20.0pF
Ref. Code for
internal use.
±50ppm
G
Range -40℃ ½ +85℃
Package specification
±100ppm
H
Range -40℃ ½ +85℃
B
T
Bulk
(STD)
Ammo pack
*Please contact us for specifications available.
■
Part Marking
[standard]
ffffCym
f : The first 4 digits of Frequency
including the decimal point
C : Manufacture's ID Code
y : The last digit of production year
m : Production month (See Table.1)
Table.1
Month
Code
Jan Feb
1
2
…
…
Sep Oct Nov Dec
9
X
Y
Z
■
Taping dimension : 2,000pcs/Ammo pack [mm]
Rev.1
http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html
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