CRYSTAL UNITS FOR MICROPROCESSOR (AT-51)
s
Features
8
AT-51 crystal units can provide a great number of standard frequencies and have a wide range of
applications. In addition, taping type and gull-wing type are available for automatic mounting.
s
Specification
Frequency Range
Overtone
Temperature Characteristics
Operating Temp. Range
Frequency Tolerance
Equivalent Series Resistance
Load Capacitance
Table 6 (AT-51)
Table 6 (AT-51)
±50
×
10
-6
–10 ~ +60°C
±50
×
10
-6
(at 25°C)
Table 6 (AT-51)
Table 6 (AT-51)
Measuring Circuit: CI Meter
•
Dimensions
3.541 MHz min
(Fundamental)
Drive Level
50µW (1000µW max)
Fundamental
Standard Load
Capacitance
16pF
5.08
max
CRYSTAL UNITS
3.541 MHz max
(Fundamental),
3rd Overtone
500µW (1000µW max)
3rd Overtone
Series
10.10 max
3.70 max
(mm)
20±1
+0.05
ø 0.43 –0.03
Standard load capacitance may vary depending on the
frequency.
4.88±0.20
11.05 max
4.65 max
AT-51
s
Technical Guidance (AT-51)
•
Equivalent Series Resistance (R
1
)
(max)
150
•
Shunt Capacitance (C
0
)
(Typical)
10
8
CO (pF)
6
4
2
Fundamental
0
3rd Overtone
100
100
1
10
FREQ (MHz)
R
1
(Ω)
3rd Overtone
•
Motional Capacitance (C
1
)
(Typical)
100.0
50
Fundamental
10.0
C1 (fF)
Fundamental
1.0
1
5
10
20
50
100
0.1
1
10
FREQ (MHz)
3rd Overtone
100
FREQ (MHz)
57