HC-49U型封装晶振，技术规格如下。如需详细参数、报价，请告知：标称频率NominalFrequencyMHz震荡方式OscillationMode基频盒型HolderTypeHC-49/U调整频差FrequencyTolerance（+25℃）≤&plu***n;20PPM工作温度范围OperatingTemperatureRange-20℃—+70℃仓储温度范围StorageTemperatureRange-40℃—+85℃等效电阻EpuivalentResisrance≤100Ω负载电容LoadCapacitance20PF静电容ShuntCapacitance≤7PF激励功率DriveLevel10μwMax年老化率AgingRateayear≤&plu***n;3PPM)