Datasheet Summary
actual size
SMQ series
- SMU4 surface mount quartz crystal
Features s wide frequency range s extended temperature range type frequency
SMU4 (HC49/U4H
- SMD) 3.579545 MHz ~ 25 MHz fundamental AT-cut 27.0 MHz ~ 50.0 MHz 3rd overtone AT-cut frequency tolerance at 25 °C frequency temp. characteristic operating temperature storage temperature load capacitance CL shunt capacitance CO drive level max. aging
± 30 ppm ± 30 ppm
± 30 ppm ± 50 ppm standard
± 30 ppm
± 100 ppm
-20 °C ~ +70 °C -40 °C ~ +90 °C 12 pF ~ 30 pF / series < 7 pF 100 µ W < ± 5 ppm
-40 °C ~ +85 °C order information example:
- 25.0
- SMU4
- 30
- 30 / 50
- BT
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