CRYSTAL
UNITS
CRYSTAL UNITS FOR PAGING SYSTEM (NR-2C)
s
Features
8
NR-2C are highly reliable crystal units with superla-
tive shockproof and temperature characteristics. They
feature extreme compactness, i.e., they are extremely
thin and light in addition to the fact that their electrical
characteristics are not deteriorated.
s
Specification
Frequency Range
Overtone
Temperature
Characteristics
Operating Temp.
Range
Frequency Tolerance
Equivalent
Series Resistance
Load Capacitance
45 ~ 110MHz
3rd Overtone
80 ~ 150MHz
5th Overtone
•
Dimensions
6.9±0.2
6.0max
2.2
±0.2
(mm)
±5
×
10
-6
–10 ~ +60°C
±10
×
10
-6
(at 25°C)
60
Ω
max
Series
80
Ω
max
±0.20
3.75
20min
±0.05
ø 0.35
3.2max
7.9max
Measuring Circuit:
π
network (IEC Pub. 444)
NR-2C
s
Technical Guidance (NR-2C)
•
Equivalent Series Resistance (R
1
)
80
•
Motional Capacitance (C
1
)
(max)
50.0
5th overtone
70
(Typical)
60
3rd overtone
R
1
(Ω)
20.0
Fundamental
10.0
50
40
5.0
30
C1 (fF)
2.0
3rd overtone
1.0
5th overtone
0.5
20
1
2
5
10
20
50
100
200
FREQ (MHz) / Fundamental
•
Shunt Capacitance (C
0
)
6
(Typical)
0.2
0.1
5
4
3rd overtone
5
10
20
50
FREQ (MHz)
100
200
500
C
0
(pF)
5th overtone
3
2
1
0
10
20
50
100
200
500
FREQ (MHz) / Fundamental
54
CRYSTAL UNITS FOR PAGING SYSTEM (NR-2D)
s
Features
8
NR-2D are highly reliable crystal units with superla-
tive shockproof and temperature characteristics. They
feature extreme compactness, i.e., they are extremely
thin and light in addition to the fact that their electrical
characteristics are not deteriorated.
s
Specification
Frequency Range
Overtone
Temperature
Characteristics
Operating Temp.
Range
Frequency Tolerance
Equivalent
Series Resistance
Load Capacitance
45 ~ 110MHz
3rd Overtone
80 ~ 150MHz
5th Overtone
•
Dimensions
6.9±0.2
max
4.7
2.2±0.2
(mm)
±5
×
10
-6
–10 ~ +60°C
±10
×
10
-6
(at 25°C)
60
Ω
max
Series
80
Ω
max
±0.20
3.75
7.90max
20.0min
±0.05
ø 0.35
3.2max
CRYSTAL UNITS
Measuring Circuit:
π
network (IEC Pub. 444)
NR-2D
s
Technical Guidance (NR-2D)
•
Equivalent Series Resistance (R
1
)
80
•
Motional Capacitance (C
1
)
(max)
50.0
5th overtone
70
(Typical)
60
3rd overtone
R
1
(Ω)
20.0
Fundamental
10.0
50
40
5.0
30
C1 (fF)
2.0
3rd overtone
1.0
5th overtone
0.5
20
1
2
5
10
20
50
100
200
FREQ (MHz) / Fundamental
•
Shunt Capacitance (C
0
)
6
(Typical)
0.2
0.1
5
4
3rd overtone
5
10
20
50
FREQ (MHz)
100
200
500
C
0
(pF)
5th overtone
3
2
1
0
10
20
50
100
200
500
FREQ (MHz) / Fundamental
55
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