RF Filters:

251 Products Found
We offer RF filters for aircraft, aerospace, medical, power plant control, traffic signal, transportation equipment and a wide range of other applications.Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). This frequency range is used by most broadcast radio, television, and wireless communication equipment (mobile phones, Wi-Fi, etc.).Accordingly, most RF and microwave devices will include some kind of filtering on the signals transmitted or received. Such filters are commonly used as building blocks for duplexers and diplexers to combine or separate multiple frequency bands.

What does an RF filter do?

Filters fulfil one of the following functions:
  1. RF band-pass filter: selects only a desired band of frequencies
  2. RF band-stop filter: eliminates an undesired band of frequencies
  3. RF low-pass filter: allows only frequencies below a cutoff frequency to pass
  4. RF high-pass filter: allows only frequencies above a cutoff frequency to pass

RF Filter types

There are many different types or models for RF filters. Below are some of the more commonly used forms.Constant-k: The constant-k filter’s advantage lies in the ease of calculating values for the various components. This enables it to be simply designed with minimal theoretical knowledge about the mathematics, unlike many other filters. However, its performance does not quite match that of other filter types, although for many applications it is more than adequate.Butterworth: This type of filter provides the maximum in band flatness, although it provides a lower stop-band attenuation than a Chebyshev filter. However, it is also able to provide better group delay performance, and hence lower overshoot.Bessel: This filter provides the optimum in-band phase response and therefore also provides the best step response. It is often used where signals incorporate square waves, etc as the shape is maintained best of all.Chebyshev: This filter provides fast roll off after the cut off frequency is reached. However, this is at the expense of in-band ripple. The more in-band ripple that can be tolerated, the faster the roll off.Elliptic: This filter, also known as the Cauer filter, has significant levels of in-band and out of band ripple, and as expected the higher the degree of ripple that can be tolerated, the steeper it reaches its ultimate roll off.
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4214801

RoHS

Each
1+
HK$2,016.350
Min: 1 / Mult: 1
Band Pass
-
902MHz to 928MHz
GSM, ISM, RFID, RF, SCADA
-
-
3106011

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$1.600
10+
HK$1.230
Min: 5 / Mult: 5
Low Pass
6Pins
2.4GHz to 2.5GHz
Bluetooth
WLCSP
-
3106011RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
HK$1.230
Min: 100 / Mult: 1
Low Pass
6Pins
2.4GHz to 2.5GHz
Bluetooth
WLCSP
-
3650684

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$2.050
10+
HK$1.610
100+
HK$1.330
500+
HK$1.080
Min: 5 / Mult: 5
Low Pass
4Pins
698MHZ to 960MHZ
GSM, LTE, UMTS, 5G
0603 [1608 Metric]
DEA Series
3517018

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$7.630
10+
HK$7.360
25+
HK$7.290
50+
HK$6.300
100+
HK$5.990
More Pricing...
Min: 1 / Mult: 1
-
-
2.4GHz to 2.5GHz
Wireless Communication Systems Like Home RF, DECT, WLAN, Bluetooth, ZigBee
0805 [2012 Metric]
WE-BAL Series
3517018RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$5.990
500+
HK$5.950
Min: 100 / Mult: 10
-
-
2.4GHz to 2.5GHz
Wireless Communication Systems Like Home RF, DECT, WLAN, Bluetooth, ZigBee
0805 [2012 Metric]
WE-BAL Series
3650684RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$1.330
500+
HK$1.080
Min: 100 / Mult: 10
Low Pass
4Pins
698MHZ to 960MHZ
GSM, LTE, UMTS, 5G
0603 [1608 Metric]
DEA Series
4154130

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$2.880
10+
HK$2.780
25+
HK$2.670
50+
HK$2.570
100+
HK$2.460
More Pricing...
Min: 1 / Mult: 1
Band Pass
6Pins
2.4GHz to 2.5GHz
ZigBee
0805 [2012 Metric]
-
4354195

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
HK$4.490
50+
HK$3.930
250+
HK$3.250
500+
HK$2.920
1000+
HK$2.690
More Pricing...
Min: 5 / Mult: 5
Low Pass
4Pins
5MHz to 1002MHz
STB
1008 [2520 Metric]
DEA Series
4154130RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$2.460
500+
HK$2.400
Min: 100 / Mult: 10
Band Pass
6Pins
2.4GHz to 2.5GHz
ZigBee
0805 [2012 Metric]
-
3678601

RoHS

Each
1+
HK$340.450
5+
HK$297.900
10+
HK$246.830
50+
HK$221.300
100+
HK$209.710
Min: 1 / Mult: 1
Band Pass
-
5.48GHz to 5.85GHz
UAV/Drone Antennas
-
-
3650703

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$3.950
10+
HK$3.340
100+
HK$2.690
500+
HK$2.190
1000+
HK$1.940
Min: 5 / Mult: 5
Low Pass
4Pins
2.4GHz to 2.5GHz
Bluetooth, WLAN
0603 [1608 Metric]
-
3517042

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$11.680
10+
HK$11.100
25+
HK$10.650
50+
HK$10.200
100+
HK$9.460
More Pricing...
Min: 1 / Mult: 1
Band Pass
-
2.4GHz to 2.5GHz
RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth
1008 [2520 Metric]
WE-BPF Series
3678599

RoHS

Each
1+
HK$341.920
5+
HK$299.180
10+
HK$247.890
50+
HK$222.250
100+
HK$210.620
Min: 1 / Mult: 1
Band Pass
-
2.4GHz to 2.5GHz
UAV/Drone Antennas
-
-
1885520

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$3.620
10+
HK$2.550
100+
HK$2.220
500+
HK$2.090
1000+
HK$1.900
Min: 5 / Mult: 5
Low Pass
8Pins
902MHz to 928MHz
-
0805 [2012 Metric]
-
3387267

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$3.050
10+
HK$2.130
100+
HK$1.810
500+
HK$1.710
1000+
HK$1.630
Min: 5 / Mult: 5
Low Pass
-
2.4GHz ~ 2.5GHz
Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee
CSP
-
2148529

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$8.060
10+
HK$5.580
25+
HK$5.050
50+
HK$4.510
100+
HK$3.970
More Pricing...
Min: 1 / Mult: 1
Low Pass
8Pins
858MHz to 878MHz
-
0805 [2012 Metric]
-
1885521

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$3.320
10+
HK$3.090
100+
HK$2.020
500+
HK$1.750
1000+
HK$1.470
Min: 5 / Mult: 5
Low Pass
6Pins
2.4GHz to 2.5GHz
Bluetooth, ISM and 802.11, WLAN, ZigBee
0603 [1608 Metric]
-
3650673

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$1.890
10+
HK$1.520
100+
HK$1.160
Min: 5 / Mult: 5
Coupler
6Pins
698MHz to 2.62GHz
WLAN
0603 [1608 Metric]
HHM Series
3650679

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$2.040
10+
HK$1.590
100+
HK$1.310
500+
HK$1.130
1000+
HK$1.070
Min: 5 / Mult: 5
High Pass
4Pins
5.15GHz to 5.95GHz
WLAN
0402 [1005 Metric]
DEA Series
3650688

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$4.360
10+
HK$3.040
100+
HK$2.660
500+
HK$2.500
1000+
HK$2.190
Min: 5 / Mult: 5
Band Pass
4Pins
2.4GHz to 2.5GHz
Bluetooth, WLAN
0603 [1608 Metric]
DEA Series
1885520RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
HK$2.220
500+
HK$2.090
1000+
HK$1.900
Min: 100 / Mult: 1
Low Pass
8Pins
902MHz to 928MHz
-
0805 [2012 Metric]
-
3650692

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$2.390
10+
HK$1.670
100+
HK$1.440
500+
HK$1.340
1000+
HK$1.240
Min: 5 / Mult: 5
Band Pass
4Pins
2.3GHz to 2.69GHz
Bluetooth, LTE, UMTS, WLAN, WiMAX, 5G
0603 [1608 Metric]
DEA Series
3650683

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
5+
HK$2.380
10+
HK$1.910
100+
HK$1.570
500+
HK$1.190
1000+
HK$1.110
Min: 5 / Mult: 5
Low Pass
6Pins
470MHz to 787MHz
LTE Band13
0603 [1608 Metric]
-
3650699

RoHS

Each (Supplied on Cut Tape)
Cut Tape
Packaging Options
1+
HK$2.140
10+
HK$2.060
25+
HK$1.970
50+
HK$1.880
100+
HK$1.790
More Pricing...
Min: 1 / Mult: 1
Band Pass
3Pins
5.15GHz to 5.95GHz
WLAN
0603 [1608 Metric]
DEA Series
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