HC-49US
Features
E
xternal dimensions: 11.5 x 4.5 x 3.68mm.
F
requency range: 3.579545MHz ~ 64MHz.
．
urface mount type crystal units.
S
12
YX
.0
C
XX
X
．
great number of standard frequencies.
A
．
igh frequency pullability and low equivalent series resistance.
H
．
ighly mass production capability.
H
．
pplications: PC, STB, LCDM and Cable Modem.
A
Electrical Specifications
Item / Type
Nominal Frequency Range
Vibration Mode
Load Capacitance
Frequency Tolerance (at 25
℃
)
Frequency Versus Temperature Characteristics
Operating Temperature
Storage Temperature
Shunt Capacitance
Level Of Drive
Frequency Aging (at 25
℃
)
HC-49US
3.579545 ~ 64 MHz
AT Fundamental
p
p
12 F, 20 F, or specify
±
10 ppm, 20 ppm, or specify
±
±
20 ppm, or specify
℃
- 20 ~ + 70
℃
, - 40 ~ + 85 , or specify
- 0 ~ + 5 , or specify
4
8
℃
7 pF Max.
μ
1 ~ 500
μ
W (100 W typical)
±
3 ppm / year Max.
Equivalent Series Resistance(ESR)
3.579545
~ 4 MHz
5 ~ 6 MHz
6 ~ 7 MHz
Ò
^(
Ò
Ò
-Z
Ò
Ò
Ò
Fundamental
3rd Overtone
150
Ω
× w
L`-
Ω
0/ × w
1 × L`-
Ω
0//× w
× L`-
Ω
7× × w
/ L`-
Ω
5× × w
/ L`-
Ω
× w
L`-
20 ~ 25 MHz
25 ~ 64 MHz
Ω
0/ × w
/ × L`-
Ω
7× × w
/ L`-
7 ~ 0 MHz
1
0/ 16 y
×××
} LG
Ò
4.5
Dimensions
YXC
12.0XXX
3.5
Units: mm
1/2
HC-49US
★
PART NUMBER GUIDE
部件号示例
e.g. X4 9 SD12MSD2SC
H C -4 9 U S=11.5
×
4 .5 DI P SEAM TYPE
Quartz Crystal Resonator
Dimensions
Frequency Load Capacitance
(Hz)
(Pf)
X
Load Capacitance
(Pf)
X
7.4pF
G
12.5pF
L
9pF
10pF
M
12pF
O
P
15pF
49SD
12M
S
Frequency tolerance
B
±
10PPM
D
±
20PPM
Frequency
Stability
Pin
Overall
(ppm)
D
2
Material
Operating Temp.
Range
C
S
Operating temperature
C
-20~ +70
℃
-40~ +85
℃
I
-40~ +125
℃
A
-40~ +105
℃
F
★
WAVE SOLDERING PROFILE
波峰焊特性
Temperature (℃)
260℃ max
220℃
180℃
③
①
②
Times (S)
Pb free reflow
A
①
②
③
Preheat
Peak
160~180℃
260℃
120sec. max
60sec. max
10sec. max.
Primary heat 220℃
2/2
电子工程世界
