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What is an RF Filter?

An RF Filter, or radio frequency filter, is an electronic filter which is designed to operate on signals in medium to extremely high frequencies. These ranges are used in radio, television and wireless communications. Therefore most RF devices include some kind of filtering on the signals transmitted or received. RF filters enable the required frequencies to be passed through a circuit, while rejecting the frequencies that are not needed. These filters are often used for duplexers and diplexers in order to combine or separate multiple frequency bands. An ideal filter, whether low pass, high pass, or band pass will have a minimal amount of loss within the pass band.

Types of RF Filters

There are several different kinds of RF filters at Future Electronics. We stock many of the most common types categorized by several parameters including center frequency, insertion loss, 3 dB bandwidth, attenuation at maximum frequency, attenuation at minimum frequency, operating temperature range, impedance and packaging type. Our parametric filters will allow you to refine your search results according to the required specifications.

RF Filters from Future Electronics

Future Electronics has a wide range of RF Filters from several manufacturers. Once you decide if you need a Band Pass Filter, Ceramic Filter, Electromechanical Filter, Low Pass Filter, Saw Filter or Duplexers, you will be able to choose from their technical attributes and your search results will be narrowed to match your specific RF filter application needs. You will then be able to find the right RF filter for your RF filter circuit, duplexer, lowpass filter or programmable bandpass filter.

We deal with several manufacturers such as Abracon, CTS, Epcos, Murata, New Japan Radio, RF Monolithics, TDK and NXP, among others. You can easily refine your RF filter product search results by clicking your preferred RF filter brand from the list of manufacturers below.

Applications for RF Filters:

Bandpass filters can be used in all kinds of instrumentation including seismology, sonar and medical applications such as ECGs and EEGs. They are also used in optics, such as lasers. Low pass filters can be used for audio applications. SAW filters are increasingly being used where narrow bandwidth and low loss are required. Recent advances with this type of filter make it especially attractive for these applications.

Varicap diodes (or varactors) are often used as voltage-controlled capacitors. They are found in parametric amplifiers & oscillators and voltage-controlled oscillators as part of PLLs and frequency synthesizers. Varactors are found in TV tuners in order to electronically tune the receiver to different stations.

Choosing the Right RF Filter:

With the parametric search, when looking for the right RF filter, you can filter the results by the required category. We carry the following categories of RF Filters:

  • Band Pass Filter
  • Ceramic Filter
  • Electromechanical Filter
  • Low Pass Filter
  • Saw Filter
  • Duplexer

Once you choose the RF filter category, you can narrow them down by various attributes: by center frequency, insertion loss, 3dB bandwidth and packaging type to name a few. You will be able to find the right RF filter for your RF filter circuit, lowpass filter, programmable bandpass filter or duplexer using these filters.

RF Filters in Production Ready Packaging or R&D Quantities

If the quantity of RF filters you require is less than a full reel, we offer customers several of our RF filter devices in tray, tube or individual quantities that will help you avoid unneeded surplus.

Future Electronics also offers clients a unique bonded inventory program designed in order to eliminate potential problems that can arise from an unpredictable supply of products that could contain raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.

Featured RF Filter Products

Manufacturer Part Number Description
Abracon AFS915.0W03-TS4 915.00 MHz 3 X 3 X 1.5 mm Saw Filter
Abracon 434.000M-AFS-T SMT 434.000 MHz 3.8X3.8X1.5 mm 6-pad SMT Saw Filter
CTS 5082-0012 LR Series 1960 MHz 23 dB Surface Mount Monoblock Ceramic Filter
CTS 1180039 Ceramic Filter
CTS CER0126A CER0126A 1800 MHz DCS DupleXer
Epcos B39122B4057U510 B39122 Series 1228 MHz 20 MHz Bw @ -3 db -40/+ 85° C Low Loss SAW Filter
Epcos B39921B3588U410 B39921 Series 915 MHz 26 MHz Bw @ -3 db -40/+ 85° C SAW Filter
Epcos B39921B3588U410 B39921 Series 915 MHz 26 MHz Bw @ -3 db -40/+ 85° C SAW Filter
Epcos B39162B9080L310 GPS Saw Filter 1575.42Mhz (2.0 x 1.6 x 0.86. mm3)
Epcos B39321B3731H110MR B39321 Series 315 MHz 630 kHz Bw @ -3 db -45/+ 120° C Short Range SAW Filter
Epcos B39321B3761Z810 B39321 Series 315 MHz 300 kHz Bw @ -3 db -45/+ 125° C Short Range SAW Filter
Epcos B39431B3730H110MR B39431 Series 433.92 MHz 400 kHz Bw @ -3 db -45/+ 125° C SAW Filter
Murata LFB2H2G45SG7A158 Chip Multilayer LC Filters (BPF)
Murata SAFEA1G58FB0F00R14 Saw Filter
Murata SFECV10M7KA00-R0 10.7 MHz 2 Element 110 KHz Typical Bw 330 Ohm Surface Mount Ceramic Filter
Murata SAFEB1G57KE0F00R14 Saw Filter Nominal Center Frequency 1575.5MHz , Temp. Range -30 to 85°C
Murata SFECV10M7FA00-R0 10.7 MHz 2 Element 280 KHz Typical Bw 330 Ohm Surface Mount Ceramic Filter
Murata DFCB2915MLDJAA-RD1 Antenna/Duplexer Dielectric Filters (GIGAFILr)for RF/Local Dielectric Band Pass
Murata SFECV10M7KA00-R0 10.7 MHz 2 Element 110 KHz Typical Bw 330 Ohm Surface Mount Ceramic Filter
Murata CFULB455KD4A-B0 455 kHz 4 dB 1500 Ohm Impedance Through Hole Ceramic Filter
New Japan Radio NSVA-352 JRC Saw Filter
NXP IP3048CX5,135 IP3048 Series Dual Channel Passive LC-filter Network with ESD
RF Monolithics SF2049E 915 MHz SAW Filter - RF in a 3.0x3.0mm SM3030-6 Package
RF Monolithics RF3404E RF3404E Series 433.92 MHz 2.3 dB Surface Mount SAW Filter - SM3030-6 Case
RF Monolithics SF1186K-3 SF1186K-3 Series 1575.42 MHz 0.9 dB Surface Mount SAW Filter - SM1411-5

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