RF Filters:

258 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+
S$327.040
(S$356.4736)
Min: 1 / Mult: 1
Band Pass
-
902MHz to 928MHz
GSM, ISM, RFID, RF, SCADA
-
-
3106011

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.278
(S$0.303)
10+
S$0.198
(S$0.2158)
Min: 5 / Mult: 5
Low Pass
6Pins
2.4GHz to 2.5GHz
Bluetooth
WLCSP
-
3678599

RoHS

Each
1+
S$56.940
(S$62.0646)
5+
S$49.820
(S$54.3038)
10+
S$41.280
(S$44.9952)
50+
S$37.010
(S$40.3409)
100+
S$34.160
(S$37.2344)
Min: 1 / Mult: 1
Band Pass
-
2.4GHz to 2.5GHz
UAV/Drone Antennas
-
-
1885520

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.615
(S$0.6704)
10+
S$0.435
(S$0.4742)
100+
S$0.377
(S$0.4109)
500+
S$0.355
(S$0.387)
1000+
S$0.324
(S$0.3532)
Min: 5 / Mult: 5
Low Pass
8Pins
902MHz to 928MHz
-
0805 [2012 Metric]
-
3387267

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.530
(S$0.5777)
10+
S$0.371
(S$0.4044)
100+
S$0.315
(S$0.3434)
500+
S$0.298
(S$0.3248)
1000+
S$0.284
(S$0.3096)
Min: 5 / Mult: 5
Low Pass
-
2.4GHz ~ 2.5GHz
Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee
CSP
-
3650673

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.319
(S$0.3477)
10+
S$0.258
(S$0.2812)
100+
S$0.220
(S$0.2398)
Min: 5 / Mult: 5
Coupler
6Pins
698MHz to 2.62GHz
WLAN
0603 [1608 Metric]
HHM Series
1885520RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.377
(S$0.4109)
500+
S$0.355
(S$0.387)
1000+
S$0.324
(S$0.3532)
Min: 100 / Mult: 1
Low Pass
8Pins
902MHz to 928MHz
-
0805 [2012 Metric]
-
3650699

RoHS

Each (Supplied on Cut Tape)
Cut Tape
1+
S$0.415
(S$0.4524)
10+
S$0.332
(S$0.3619)
25+
S$0.320
(S$0.3488)
50+
S$0.308
(S$0.3357)
100+
S$0.296
(S$0.3226)
More Pricing...
Min: 1 / Mult: 1
Band Pass
3Pins
5.15GHz to 5.95GHz
WLAN
0603 [1608 Metric]
DEA Series
3650680

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.458
(S$0.4992)
10+
S$0.299
(S$0.3259)
100+
S$0.232
(S$0.2529)
500+
S$0.218
(S$0.2376)
1000+
S$0.205
(S$0.2234)
Min: 5 / Mult: 5
Band Pass
4Pins
4.9GHz to 5.95GHz
WLAN
0402 [1005 Metric]
-
3106011RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
S$0.198
(S$0.2158)
Min: 100 / Mult: 1
Low Pass
6Pins
2.4GHz to 2.5GHz
Bluetooth
WLCSP
-
3650690

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.372
(S$0.4055)
10+
S$0.258
(S$0.2812)
100+
S$0.219
(S$0.2387)
500+
S$0.208
(S$0.2267)
1000+
S$0.188
(S$0.2049)
Min: 5 / Mult: 5
Band Pass
4Pins
2.4GHz to 2.5GHz
Bluetooth, WLAN
0603 [1608 Metric]
DEA Series
3387267RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.315
(S$0.3434)
500+
S$0.298
(S$0.3248)
1000+
S$0.284
(S$0.3096)
Min: 100 / Mult: 1
Low Pass
-
2.4GHz ~ 2.5GHz
Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee
CSP
-
3650675

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.319
(S$0.3477)
10+
S$0.231
(S$0.2518)
100+
S$0.220
(S$0.2398)
Min: 5 / Mult: 5
Coupler
6Pins
698MHz to 2.62GHz
WLAN
0603 [1608 Metric]
HHM Series
3650675RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.220
(S$0.2398)
Min: 100 / Mult: 10
Coupler
6Pins
698MHz to 2.62GHz
WLAN
0603 [1608 Metric]
HHM Series
3650699RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.296
(S$0.3226)
500+
S$0.283
(S$0.3085)
Min: 100 / Mult: 10
Band Pass
3Pins
5.15GHz to 5.95GHz
WLAN
0603 [1608 Metric]
DEA Series
3650680RL

RoHS

Each (Supplied on Cut Tape)
Cut Tape
100+
S$0.232
(S$0.2529)
500+
S$0.218
(S$0.2376)
1000+
S$0.205
(S$0.2234)
Min: 100 / Mult: 5
Band Pass
4Pins
4.9GHz to 5.95GHz
WLAN
0402 [1005 Metric]
-
3650690RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.219
(S$0.2387)
500+
S$0.208
(S$0.2267)
1000+
S$0.188
(S$0.2049)
Min: 100 / Mult: 10
Band Pass
4Pins
2.4GHz to 2.5GHz
Bluetooth, WLAN
0603 [1608 Metric]
DEA Series
3650673RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.220
(S$0.2398)
Min: 100 / Mult: 10
Coupler
6Pins
698MHz to 2.62GHz
WLAN
0603 [1608 Metric]
HHM Series
3650676

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
S$0.169
(S$0.1842)
100+
S$0.141
(S$0.1537)
500+
S$0.138
(S$0.1504)
2500+
S$0.135
(S$0.1472)
5000+
S$0.134
(S$0.1461)
More Pricing...
Min: 10 / Mult: 10
High Pass
4Pins
5.15GHz to 5.85GHz
WLAN
0202 [0605 Metric]
DEA Series
3650676RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
S$0.141
(S$0.1537)
500+
S$0.138
(S$0.1504)
2500+
S$0.135
(S$0.1472)
5000+
S$0.134
(S$0.1461)
10000+
S$0.133
(S$0.145)
Min: 100 / Mult: 10
High Pass
4Pins
5.15GHz to 5.85GHz
WLAN
0202 [0605 Metric]
DEA Series
4445641

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.358
(S$0.3902)
10+
S$0.256
(S$0.279)
100+
S$0.222
(S$0.242)
500+
S$0.209
(S$0.2278)
1000+
S$0.178
(S$0.194)
Min: 5 / Mult: 5
Low Pass
4Pins
4.9GHz to 5.95GHz
WLAN
0603 [1608 Metric]
DEA Series
4445641RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
100+
S$0.222
(S$0.242)
500+
S$0.209
(S$0.2278)
1000+
S$0.178
(S$0.194)
Min: 100 / Mult: 10
Low Pass
-
-
-
-
-
3650684

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
S$0.347
(S$0.3782)
10+
S$0.272
(S$0.2965)
100+
S$0.224
(S$0.2442)
500+
S$0.205
(S$0.2234)
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
1+
S$1.290
(S$1.4061)
10+
S$1.250
(S$1.3625)
25+
S$1.240
(S$1.3516)
50+
S$1.070
(S$1.1663)
100+
S$1.020
(S$1.1118)
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+
S$1.020
(S$1.1118)
500+
S$1.010
(S$1.1009)
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
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