AT-CUT CRYSTAL UNIT
(Metal-can Type)
HC-49
/
U-S
■
FEATURES
7High
performance miniature crystal units with
Citizen's ultra-precise processing technology.
7Available
in Tape and reel form.
7Suitable
for various applications such as
communication , AV , automotive and measurement
devices.
Life-size
Taping dimension : 2000pcs/Ammo pack [mm]
6.35±1.3
12.7±1.0
11.5 Max.
φ0.43±0.05
20.5±0.5
3.0 Max.
3.85±0.7
5.0±0.8
3.5 Max.
■
DIMENSION [mm]
2.0 Max.
2.0 Max.
4.65 Max.
11.5 Max.
9.0±0.5
φ4±0.2
4.66 Max.
3.5 Max.
20±1
13.0
＋
1.0
18.0
−
0.5
1.5 Max.
4.88
0.375
12.7±0.3
■
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
HC-49/U-S
3.5MHz∼30.0MHz Fundamental）
（
30.0MHz∼50.0MHz 3rd Overtone）
（
±30ppm
below 6.0MHz ±50ppm
：
above 6.0MHz ±30ppm
：
−
20℃∼
＋
70℃
−
40℃∼
＋
85℃
Conditions
Need to contact us for
the available frequency
f
0
△
f/f
0
△
f/f
0
at 25˚C
−
10℃∼
＋
60℃
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
7.0pF 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
＜14MHz
Fundamental
200ΩMax.
Fundamental
150ΩMax.
Fundamental
100ΩMax.
Fundamental
80ΩMax.
14MHz≦f
0
＜30MHz
Fundamental
50ΩMax.
30MHz≦f
0
＜36MHz
3rd Overtone
140ΩMax.
36MHz≦f
0
≦50MHz
3rd Overtone
100ΩMax.
http://cfm.citizen.co.jp/english/product/pr02.html
18
AT-cut Crystal Units. Part Numbering System
