HC-49SMD
Features
. External dimensions: 11.4 x 4.8 x 3.8 mm.
. Frequency range: 3.579545MHz ~ 64MHz.
C
YX XX
X
12.0
. Surface mount type crystal units.
. A great number of standard frequencies.
. High frequency pullability and low equivalent series resistance.
. Highly mass production capability.
. Applications: PC, STB, LCDM and Cable Modem.
Electrical Specifications
Item / Type
HC-49SMD
Nominal Frequency Range
3.579545
~ 64 MHz
Vibration Mode
AT Fundamental
Load Capacitance
12 pF, 20 pF, or specify
Frequency Tolerance (at 25 ℃)
±1
0 ppm, ± 20 ppm, or specify
Frequency Versus Temperature Characteristics
± 20 ppm, or specify
Operating Temperature
- 20 ~ + 70 ℃ , - 40 ~ + 85 ℃ , or specify
Storage Temperature
- 40 ~ + 85 ℃ , or specify
Shunt Capacitance
7 pF Max.
Level Of Drive
1 ~ 500 μW (100 μW typical)
Frequency Aging (at 25 ℃)
± 3 ppm / year Max.
Equivalent Series Resistance(ESR)
3rd Overtone
Fundamental
3.579545 ~ 4 MHz
150 Ω Max.
20 ~ 25 MHz
100 Ω Max.
4 ~ 5 MHz
120 Ω Max.
25 ~ 64 MHz
80 Ω Max.
5 ~ 6 MHz
100 Ω Max.
6 ~ 7 MHz
80 Ω Max.
7 ~ 10 MHz
60 Ω Max.
10 ~ 27
MHz
40 Ω Max.
Dimensions
Units: mm
1/2
HC-49SMD
★ PART NUMBER GUIDE 部件号示例
Frequency
Stability
Overall
(ppm)
Quartz Crystal Resonator Dimensions Frequency Load Capacitance
(Hz)
(Pf)
X
12M
49SM
H C -4 9 SMD=11.4 × 4 .35 SMD SEAM TYPE
e.g. X4 9 SM12MSD2SC
S
Pin
Material
Operating Temp.
Range
2
S
C
D
Frequency tolerance
B
±10PPM
D
±20PPM
Load Capacitance (Pf)
X
7.4pF
G
12.5pF
L
9pF
10pF
M
12pF
O
P
15pF
Operating temperature
C
-20~ +70 ℃
-40~ +85 ℃
I
-40~ +125℃
A
-40~ +105℃
F
★ REFLOW SOLDERING PROFILE 回流焊特性
Temperature (℃)
260℃ max
220℃
180℃
③
①
②
Times (S)
Pb free reflow
A
①
Preheat
160~180℃
②
Primary heat 220℃
60sec. max
③
Peak
10sec. max.
260℃
2/2
120sec. max
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