UM-1直插44.645MHz晶振规格书晶体技术规格表CRYSTALUNITSPECIFICATION1标称频率NominalFrequency44.645000MHz2振动模式ModeofOscillation三次泛音3调整频差（25℃）FrequencyToleranceat25℃&plu***n;10ppm4温度频差TemperatureFrequencyStability&plu***n;10ppm5工作温度OperatingTemperatureRange-20℃--+70℃16贮存温度StorageTemperature-40℃--+85℃17等效电阻EquivalencyResistance≤50Ω18负载电容LoadCapacitance∝9激励功率：DriveLevel10uw10静电容ShuntCapacitance≤7.0PF11绝缘阻抗InsulationResistance＞500MΩ//DC100V&plu***n;10V112老化Aging&plu***n;3ppm/year13盒型HoldTypeUM—18.1max3.2max0.3513.27.9max3.75单位：mm14标志MarkingSSS44.645MHZUM-1直插44.645MHz晶振规格书)