B39781B4319P810

Series:	*
Part Status:	Active
Lead Free Status / RoHS Status:	--
Frequency - Center:	782MHz
Moisture Sensitivity Level (MSL):	--
Bandwidth:	10MHz
Insertion Loss:	1.5dB
Ratings:	AEC-Q200
Applications:	Cellular, LTE
Mounting Type:	Surface Mount
Package / Case:	5-SMD, No Lead
Height (Max):	0.016" (0.40mm)
Size / Dimension:	0.055" L x 0.043" W (1.40mm x 1.10mm)

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Introduction of SAW Filter B39781B4319P810SAW Filter (surface-acoustic-wave filter) is a type of electronic filter used to limit or enhance specific frequencies within a particular range and is widely used in many applications. B39781B4319P810 is a commonly used SAW filter, which is a low-loss high performance filter with a center frequency of 810 MHz. The main components are a “piezoelectric substrate” and an interdigital electrode. The electrodes are printed on the substrate in an interdigital format.Application Field of B39781B4319P810The B39781B4319P810 SAW filter are commonly used in wireless communication systems. Wireless communication systems include cellular, RF transceiver applications, and WiFi due to their simplicity and cost-effectiveness. It can also be used in television applications and satellite communication systems. In cellular applications, B39781B4319P810 is mainly used in LTE and GSM transmissions. For example, it is used to filter downlink signals and ensure optimal downlink communication quality. In RF transceiver applications, B39781B4319P810 is mainly used in base station tuning, radio frequency front-end systems, and frequency converters. It helps improve signal-to-noise ratio and extend communication distance. In WiFi applications, B39781B4319P810 is mainly used in wireless router and repeater receiver. It can increase the signal strength and reduce the energy consumption of Wifi devices. In television applications, B39781B4319P810 can be used to filter different channel signals, enhance signal wave shapes, and reduce the reflected power. In satellite communication systems, its main role is to prevent the satellite receiver from receiving interference signals.Working Principle of B39781B4319P810The main working principle of B39781B4319P810 is to filter specific frequencies within a particular range. It utilizes the piezoelectric effect and the surface acoustic wave principle. When a signal passes through the interdigital electrodes which are printed on the piezoelectric substrate, the piezoelectric effect will convert the electrical signal energy into acoustic energy and generate a surface acoustic wave which converges along the two electrodes and is narrow-band, high-selective, and highly linear.The frequency bandwidth of B39781B4319P810 is adjustable. It can determine the upper and lower frequency points of the passband, thus narrowing the stopband and higher attenuation frequency of the band-stop filters. Besides, B39781B4319P810 is also designed with high temperature stability, good accuracy, and high insertion loss. These features make it ideal for high frequency circuits with high accuracy and stability requirements. ConclusionThe B39781B4319P810 SAW Filter is an ideal solution for high-precision and stable wireless communication systems. It is used in cellular, RF transceiver, WiFi, television, and satellite communication systems due to its low-loss, high performance, high temperature stability, and high accuracy. Its main working principle is to use the piezoelectric effect and the surface acoustic wave principle to filter out specific frequencies within a particular range. Compared to traditional filters, B39781B4319P810 is cost-effective and can be easily incorporated into system designs and embedded products.

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