HC-49SMD Crystal Unit
Low Profile Type (3.3mm)
F
EATURE
•
•
•
•
Surface Mount Low Profile 3.3mm
Excellent Heat Resistance
High precision and high frequency stability
MXP series
Applications: Wired Network, Mobile Communication, WiMAX, WLAN,
Test Equipment
P
ART
N
UMBERING
S
YSTEM
MXP
(1)
No
(1)
(2)
(3)
(4)
(5)
(6)
F
(2)
H
(3)
J
(4)
Item
I
(5)
7M3728
(6)
Code
MXP
F
H
J
I
7M3728
Description
Crystal Unit
F: 20pF
H: ±30ppm
J: ±50ppm
I: -40~+85ºC
7M3728: 7.3728MHz
Series Reference
HC-49SMD Height: 3.3mm max.
E: 18pF, R: Series Resonance (see options)
F: ±20ppm, G: ±25ppm (see options)
G: ±25ppm, H: ±30ppm (see options)
C: -20~+70ºC, I: -40~+85ºC (see options)
3M579545~70M0 (M denotes decimal point)
Meritek Series
Load Capacitance
Frequency Tolerance
Stability vs Oper Temp.
Operating Temp.
Frequency
D
IMENSIONS AND
R
ECOMMENDED
P
ATTERN
Item
A
B
C
D
E
F
Unit: mm
Size
12.7±0.6
11.40±0.15
4.70±0.15
10.3 Max.
3.3 Max.
0.1 Max.
Item
G
H
I
J
K
-
Size
4.88±0.20
0.65±0.15
5.6
9.5
2.1
-
A
VAILABLE
O
PTIONS
Parameters
Load Capacitance
Frequency Tolerance
Stability vs Oper Temp.
Operating Temperature
Part Number Options
R: Series Resonance, 3: 3pF ~ 8: 8pF,
A: 10pF, B: 12pF, C: 15pF, D: 16pF, E: 18pF, F: 20pF, K: 22pF, G: 25pF, H: 30pF, L: 32pF
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm, K: ±100ppm
B: 0~+70°C, A: -10~+60°C, C: -20~+70°C, K: -30~+85°C, I: -40~+85°C, R: -40~+105°C
Note: Custom options available. Contact Meritek for more information.
Meritek Electronics Corporation
|
www.meritekusa.com
Rev.7a 12/20/2017
HC-49SMD Crystal Unit
Low Profile Type (3.3mm)
E
LECTRICAL
C
HARACTERISTICS
Parameters
Nominal Frequency Range
Operation Mode
Load Capacitance
Frequency Tolerance (at
25ºC)
Freq Stability over Oper Temp.
Operating Temperature
Storage Temperature
Drive Level
Aging
Shunt Capactiance
Insulation Resistance
Drive Level Dependency (DLD)
3.579545 ~ 4.999 Fund.
5.0 ~ 5.999 Fundamental
6.0 ~ 7.999 Fundamental
Equivalent Series
Resistance
8.0 ~ 8.999 Fundamental
9.0 ~ 9.999 Fundamental
10.0 ~ 15.999 Fundamental
16.0 ~ 31.999 Fundamental
32.0 ~ 70.000 3 OT/AT
Packing Unit
rd
MXP series
Characteristic
3.579545 ~ 70.000 MHz
3.579545 ~ 31.999 MHz
32.000 ~ 70.000 MHz (standard frequencies)
20.0 pF (see options)
±30 ppm (see options)
±50 ppm (see options)
-20 ~ +70°C (see options)
-55 ~ +125°C
1 mW max. (100 µW typ.)
±5 ppm / year
7.0 pF max.
500 MΩ min. (@100Vdc ±15V)
1 µW ~ 500 µW (min. 7 points tested)
180
Ω
max.
120
Ω
max.
100
Ω
max.
80
Ω
max.
60
Ω
max.
50
Ω
max.
40
Ω
max.
80
Ω
max.
1,000 pcs / 13” Reel
Fundamental
3 Overtone
rd
R
ECOMMENDED
S
OLDERING
P
ROFILES
Reflow Condition
Temp. Min T
s(min)
Pre
Heat
Temp. Max T
s(max)
Time (min. to max.) (t
s
)
Average ramp up rate (T
L
) to peak
T
s(max)
to T
L
(Ramp-up rate)
Reflow
Temp. (T
L
)
Time (min. to max.) (t
L
)
150°C
180°C
60~120 seconds
1°C/second max.
3°C/second max.
230°C
30~40 seconds
260°C
10 seconds max.
6°C/second
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
*Specifications subject to change without notice.
Meritek Electronics Corporation
|
www.meritekusa.com
Rev.7a 12/20/2017
DSP 与 ARM 处理器
