B39321R1902A310

Series:	*
Part Status:	Active
Lead Free Status / RoHS Status:	--
Bandwidth:	--
Moisture Sensitivity Level (MSL):	--
Insertion Loss:	1.4dB
Ratings:	AEC-Q200
Applications:	General Purpose
Mounting Type:	Surface Mount
Package / Case:	6-SMD, No Lead
Height (Max):	0.043" (1.10mm)
Size / Dimension:	0.118" L x 0.118" W (3.00mm x 3.00mm)

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What are SAW Filters?

SAW filters (acronym for Surface Acoustic Wave filter) are electronic devices used to filter, reject, and pass frequencies. They possess the unique advantage of small size and wide frequency range compared to existing technologies. SAW filters make use of surface acoustic wave propagation on the surface of a piezoelectric substrate such as quartz. SAW propagation is based on a piezoelectric phenomenon which is something that occurs when electricity is applied to a crystal quartz disk causing vibration in the form of mechanical energy.

B39321R1902A310 Application Field and Working Principle

The B39321R1902A310 is a high-frequency SAW filter designed for use in mobile radio applications. The SAW filter operates in the frequency range of 700 to 2200 MHz, offers very low insertion loss with excellent selectivity, and is ideal for use in cellular base station applications. It has a very small footprint and is highly integrated making it ideal for applications where space is at a premium.The B39321R1902A310 employs a multi-layer piezoelectric substrate with an overlying metalization pattern. Electrical signals are carried through the metalization pattern which generates an acoustic wave on the surface of the piezoelectric substrate. Due to the metalization pattern, the acoustic wave can reflect, refract, or diffract such waves can only propagate in a specific direction with specified input or output impedances. The various acoustic wave components of the electric signal all propagate at slightly different velocity, hence allowing the design of a SAW filter which is capable of operating over a wider frequency range. The B39321R1902A310 SAW filter has a very low insertion loss, usually less than 2 dB. It also provides very high levels of rejection and stability - meaning the filter will remain constant, even under variable environmental conditions. The B39321R1902A310 SAW filter has a built-in temperature compensation element which helps ensure operation of the filter over a wide temperature range.In conclusion, the B39321R1902A310 SAW filter is an excellent high-frequency filter for use in mobile radio applications. It has low insertion loss with excellent selectivity and features a built-in temperature compensation element to enable operation over a wide temperature range. Its small size, high integration, and wide frequency range make the B39321R1902A310 SAW filter an ideal choice for cellular base stations.

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