Meritek Electronics Corporation | www.meritekusa.com
Rev.7a 12/21/2017
Ceramic SMD Crystal Unit
SMD 5.0 x 3.2mm Type
MXB series
FEATURE
Surface Mount Low Profile
Glass Sealed Ceramic
Excellent Heat Resistance
High precision and high frequency stability
Applications: Wired Network, Mobile Communication, WiMAX, WLAN,
Test Equipment
PART NUMBERING SYSTEM
No
Item
Code
Description
Series Reference
(1)
Meritek Series
MXB
Crystal Unit
Ceramic SMD Crystal 5.0x3.2mm 2 Pads
(2)
Load Capacitance
F
F: 20pF
E: 18pF, R: Series Resonance (see options)
(3)
Frequency Tolerance
H
H: ±30ppm
F: ±20ppm, G: ±25ppm (see options)
(4)
Stability vs Oper Temp.
J
J: ±50ppm
G: ±25ppm, H: ±30ppm (see options)
(5)
Operating Temp.
I
I: -40~+85ºC
C: -20~+70ºC, I: -40~+85ºC (see options)
(6)
Frequency
18M432
18M432: 18.432MHz
8M0 ~ 54M0 (M denotes decimal point)
D
IMENSIONS AND RECOMMENDED PATTERN
PIN
PIN Layout
1
Input / Output
2
Output / Input
(Unit:mm)
AVAILABLE OPTIONS
Parameters
Part Number Options
Load Capacitance
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
Frequency Tolerance
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm
Stability vs Oper Temp.
A: ±10ppm, C: ±15ppm, F: ±20ppm, G: ±25ppm, H: ±30ppm, J: ±50ppm, K: ±100ppm
Operating Temperature
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.
MXB
F
H
J
I
18M432
(1)
(2)
(3)
(4)
(5)
(6)
Meritek Electronics Corporation | www.meritekusa.com
Rev.7a 12/21/2017
Ceramic SMD Crystal Unit
SMD 5.0 x 3.2mm Type
MXB series
ELECTRICAL CHARACTERISTICS
Parameters
Characteristic
Frequency Range
8.000 ~ 54.000 MHz
Operation Mode
Fundamental
Load Capacitance
18 pF (see options)
Frequency Tolerance (at 25ºC)
±30 ppm (see options)
Freq Stability over Oper Temp.
±50 ppm (see options)
Operating Temperature
-55 ~ +125°C (see options)
Storage Temperature
-40 ~ +85°C
Drive Level
100µW max. (10 typ.)
Aging
±5 ppm / year
Shunt Capactiance
5.0 pF max.
Insulation Resistance
500 MΩ min. (@100Vdc ±15V)
Equivalent Series
Resistance
8.0 ~ 30.000 Fundamental
60 Ω max.
30.01 ~ 54.000 Fundamental
45 Ω max.
RECOMMENDED SOLDERING PROFILES
Reflow Condition
Pre
Heat
Temp. Min T
s(min)
150°C
Temp. Max T
s(max)
180°C
Time (min. to max.) (t
s
)
60~120 seconds
Average ramp up rate (T
L
) to peak
1°C/second max.
T
s(max)
to T
L
(Ramp-up rate)
3°C/second max.
Reflow
Temp. (T
L
)
230°C
Time (min. to max.) (t
L
)
30~40 seconds
Peak Temperature (T
P
)
260°C
Time within 5°C of actual peak
Temperature (t
p
)
10 seconds max.
Ramp-down Rate
6°C/second
*Specifications subject to change without notice.