MONOLITHIC CRYSTAL FILTERS
||This indicates the outside dimensions of the product. 2520 size indicates a product sized 2.5 by 2.0 in mm, and 3225 size indicates a product sized 3.2 by 2.5 in mm.
||Capacitance of the connection between elements for 4 pole filter.
||Relative attenuation guaranteed in a specific range within the stop band.
||Difference in attenuation when filter is inserted and not inserted. Can be either of the following:
Minimum loss: Minimum value of insertion loss
Insertion loss at f0: Insertion loss at nominal frequency
|Metal-jacket (SMD) type
||Crystal filters attached with an additional metal clip to make it available for surface-mounting.
|Monolithic Crystal Filters
||A device that has a frequency screening function. From a wide frequency range, it passes a specific frequency and attenuates unnecessary ones. It plays the role of extracting desired frequency in radio communications equipment such as cellular and cordless phones. With the high Q factor of the crystal, these filters feature low loss, steep attenuation characteristics and high stability as well as good temperature drifting characteristics.
||Nominal value of center frequency.
|Operating Temperature Range
||Temperature range over which the quartz device can be operated within allowable deviation range.
||Frequency interval at which relative attenuation is guaranteed to be equal to or less than a given value, A1.
||The maximum difference between the maximum attenuation and the minimum loss within the pass band.
||Abbreviation of Surface Mounted Device. It is a generic term used to identify packages which can be mounted to the PCBs.
||Relative attenuation produced as a result of spurious frequencies in a specific range within the stop band.
|Storage Temperature Range
||Temperature range, which a quartz device should be stored at without any deterioration or damage.
||Frequency interval at which relative attenuation is guaranteed to be equal to or less than a given value, A2.
||Signal-source impedance or loading impedance as viewed from the filter side. Expressed as resistance and parallel capacitance including floating capacitance.
|Tolerance in Group Delay Time
||Difference between the maximum value and minimum value of the group delay time within the pass band.