SURFACE MOUNT TYPE CRYSTAL UNITS / NX7551SA (CP21B)
This is small surface mount type crystal unit.
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Features
8
8
8
8
Compact and thin (7.5×5.1×1.2 mm).
Excellent shock resistance and environmental characteristics.
This is high-frequency crystal unit.
They have a wide range of applications covering mobile stations and other communi-
cations equipment.
8
Taping package is for customer automatic loading operation.
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It is applicable to IR Reflow.
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Specification
Item
Frequency Range
Type
NX7551SA (CP21B)
9.0 MHz ~ 160 MHz
Overtone
Frequency Tolerance (25±3˚C)
Temperature Characteristics
(in reference to +25˚C)
Operating Temperature Range
Equivalent Series Resistance
Drive Level
Standard Load Capacitance
4
See table 3
± 50
×
10
-6
± 50
×
10
-6
–10 ~ +60˚C
± 10
×
10
-6
± 5
×
10
-6
–10 ~ +50˚C
± 10
×
10
-6
± 15
×
10
-6
–30 ~ +85˚C
CRYSTAL UNITS
4
See table 3
10 µW (100 µW max)
12pF (Fundamental)
–40 ~ +85˚C
Operable Temperature Range
If you need NON-standard specification, please contact us.
[Type name] In ( ) is previous name.
Standard Frequency (MHz)
Fundamental
3rd overtone
10.245
12.8
44.545
57.645
13.000
13.824
76.210
82.7075
16.0
16.368
86.784
90.000
21.245
23.670833
94.500
24.576
25.000
33.000
39.000
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Dimensions
7.5
±0.2
Internal connections
(Top View)
#4
#1
(mm)
4
Table 3 Equivalent Series Resistance
Overtone
Equivalent Series
Frequency
Range (MHz) Resistance (Ω)
9 ~ 50
40 ~ 150
70 ~ 160
40
60
80
5.1
±0.2
#3
#2
Fundamental
3rd overtone
5th overtone
Note) #2, #4, is connected with a
cover.
(Please connect with GND or
a power supply.
1.2
+0.1
–0.2
Reference footprint
1.4
2.5
6.4
2.2
1.0
±0.1
4.6
±0.1
2.5
±0.1
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