Ceramic SMD Crystal Unit
SMD 8.0 x 4.5mm Type
F
EATURE
Surface Mount Low Profile
Glass Sealed Ceramic
Excellent Heat Resistance
High precision and high frequency stability
MX8 series
Applications: Wired Network, Mobile Communication, WiMAX, WLAN,
Test Equipment
P
ART
N
UMBERING
S
YSTEM
MX8
(1)
No
(1)
(2)
(3)
(4)
(5)
(6)
F
(2)
H
(3)
J
(4)
Item
C
(5)
20M0
(6)
Code
MX8
F
H
J
C
20M0
Description
Crystal Unit
F: 20pF
H: ±30ppm
J: ±50ppm
C: -20~+70ºC
20M0: 20.000MHz
Series Reference
Ceramic SMD Crystal 8.0x4.5mm 2 Pads
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)
6M0 ~ 80M0 (M denotes decimal point)
Meritek Series
Load Capacitance
Frequency Tolerance
Stability vs Oper Temp.
Operating Temp.
Frequency
D
IMENSIONS AND
R
ECOMMENDED
P
ATTERN
PIN
1
2
(Unit:mm)
PIN Layout
Input / Output
Output / Input
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~+70C, A: -10~+60C, C: -20~+70C, K: -30~+85C, I: -40~+85C, R: -40~+105C
Note: Custom options available. Contact Meritek for more information.
Meritek Electronics Corporation
|
www.meritekusa.com
Rev.7a 12/21/2017
Ceramic SMD Crystal Unit
SMD 8.0 x 4.5mm Type
E
LECTRICAL
C
HARACTERISTICS
Parameters
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
6.0 ~ 9.999 Fundamental
Equivalent Series
Resistance
10.0 ~ 30.000 Fundamental
30.001 ~ 44.999 (3
rd
rd
MX8 series
Characteristic
6.000 ~ 80.000 MHz
Fundamental
3 Overtone
rd
6.000 ~ 30.000 MHz
30.001 ~ 80.000 MHz
18 pF (see options)
±30 ppm (see options)
±50 ppm (see options)
-55 ~ +125°C (see options)
-40 ~ +85°C
100µW max. (10 typ.)
±5 ppm / year
5.0 pF max.
500 MΩ min. (@100Vdc ±15V)
70 Ω max.
40 Ω max.
60 Ω max.
50 Ω max.
OT)
45.0 ~ 80.000 (3 OT)
R
ECOMMENDED
S
OLDERING
P
ROFILES
Reflow Condition
Pre
Heat
Temp. Min T
s(min)
Temp. Max T
s(max)
Time (min. to max.) (t
s
)
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
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
)
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 12/21/2017
51单片机
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