SAW Filters

A Surface Acoustic Wave (SAW) filter is a filter with an electrical input signal that is converted to an acoustic wave by a transducer. The transducer has a series of metal electrodes which are used to create and receive the waves, so that an electrical signal is converted to an acoustic wave and then back to an electrical signal. Each filter is limited to a frequency between 50MHz and 3GHz. 


Bandpass filters

The most common types of SAW filters are known as bandpass filters. These are generally small and offer a range of advantages, such as the ability to conduct during a relatively low-frequency operation.


What are saw filters used for?

SAW filters are commonly used in many different industries including chemical, optical and thermal. Their ability to operate at a wide range of temperatures, generally between -25°C and 85°C, makes them appropriate for a variety of applications. They are commonly used in the digital industry in items such as mobile phones to make touchscreen displays. 


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Filters

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Description Price Typical Centre Frequency 3dB Bandwidth Load Impedance Maximum Insertion Loss Package/Case Dimensions Depth Height Length Maximum Operating Temperature Minimum Operating Temperature Mounting Type
RS Stock No. 908-2701
Mfr. Part No.RF3181E
BrandMurata
$2.542
Each (In a Bag of 5)
units
916.5MHz 500 → 900kHz 52.8Ω 4dB SM3030-6 3.13 x 3.13 x 1.38mm 3.13mm 1.38mm 3.13mm +125°C -40°C Surface Mount
RS Stock No. 167-6218
Mfr. Part No.RF1419D
BrandMurata
$5.58
Each (On a Reel of 500)
units
403.5MHz 3 → 7.5MHz 50Ω 2.5dB SM3838-8 4 x 4 x 1.4mm 4mm 1.4mm 4mm +60°C -10°C Surface Mount
RS Stock No. 908-2736
Mfr. Part No.RF1419D
BrandMurata
$5.58
Each (In a Bag of 5)
units
403.5MHz 3 → 7.5MHz 50Ω 2.5dB SM3838-8 4 x 4 x 1.4mm 4mm 1.4mm 4mm +60°C -10°C Surface Mount
RS Stock No. 167-6215
Mfr. Part No.RF3181E
BrandMurata
$1.276
Each (On a Reel of 500)
units
916.5MHz 500 → 900kHz 52.8Ω 4dB SM3030-6 3.13 x 3.13 x 1.38mm 3.13mm 1.38mm 3.13mm +125°C -40°C Surface Mount
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