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FEATURES
l Low Cost
l Industry Standard
l Wide Frequency Range
l Excellent Aging
l AT Cut Crystal | |
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The FK-49U Series is an industry standard AT cut crystal housed in a FK-49U package.It is our standard resistance weld quartz crystal. | |
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Electrical Specifications
|
Parameter |
Symb |
Condition |
Min |
Type |
Max |
Units |
|
Frequency Range |
Fo |
|
1.8432 |
|
125 |
MHz |
|
Frequency Tolerance at 25℃ |
△F/Fo |
25℃ |
±10 |
±30 |
±50 |
Ppm |
|
Temperature Stability |
Tc |
REF TO 25℃ |
±20 |
±30 |
±50 |
Ppm |
|
Operating Temperature Range |
TOPR |
|
-20 |
|
+60 |
℃ |
|
Storage Temperature Range |
TSTG |
|
-40 |
|
+85 |
℃ |
|
Shunt Capacitance |
Co |
|
|
|
7 |
PF |
|
Load Capacitance |
CL |
Customer Specified |
10 |
|
Series |
PF |
|
Insulator Resistance |
IR |
100VDC |
500 |
|
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MΩ |
|
Drive Level |
DL |
|
|
100 |
500 |
μW |
|
Aging(at 25℃) |
FA |
AT 25℃,per year |
-5.0 |
|
+5.0 |
ppm |
Equivalent Series Resistance(ESR) and Mode of Vibration(Mode)
|
Frequency Range |
Max ESR(Ω) |
Mode |
Frequency Range |
Max ESR(Ω) |
Mode |
|
1.8432 to 1.999 |
650 |
Fundamental/AT |
6.000 to 7.999 |
50 |
Fundamental/AT |
|
2.000 to 2.999 |
500 |
Fundamental/AT |
8.000 to 12.999 |
35 |
Fundamental/AT |
|
3.000 to 3.499 |
250 |
Fundamental/AT |
13.000 to 32.000 |
25 |
Fundamental/AT |
|
3.500 to 3.999 |
150 |
Fundamental/AT |
24.000 to 29.000 |
60 |
3rd Overtone |
|
4.000 to 4.999 |
100 |
Fundamental/AT |
30.000 to 79.000 |
40 |
3rd Overtone |
|
5.000 to 5.999 |
80 |
Fundamental/AT |
80.000 to25.000 |
90 |
5rd Overtone |
Mechanical Dimensions(mm)
