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We offer ferrite beads with impedance ratings from 0.15ohm to 15kohm, and DC current ratings from 50mA to 20A

What is a Ferrite Bead?

Ferrite beads or chip inductor beads are passive electronic components that can suppress high frequency signals on a power supply line. They are normally placed around a power/ground line pair that is incoming to a particular device, such as the power cord for your laptop. These beads work according to Faraday’s Law: the magnetic core around a conductor induces a back EMF in the presence of a high frequency signal, essentially attenuating the ferrite frequency response.

Ferrites are magnetic materials, and placing this material in a ferrite clamp around the power supply/ground line provides a source of inductive impedance for signals passing through the line.

Ferrite bead model

A ferrite bead can be modelled as capacitors and inductors, plus a resistor in parallel with this RLC network wired with a series resistor. The series resistor quantifies the device’s resistance to DC currents. The inductor in this model represents a ferrite beads primary function of attenuating high-frequency signals, i.e., providing inductive impedance through Faraday’s Law. The parallel resistor in this model accounts for losses in eddy currents that are induced within the ferrite bead at high frequencies. Finally, the capacitor in this model accounts for the component’s natural parasitic capacitance.

Fair-Rite, for example, offers a broad selection of cost-effective multi-layer chip inductor beads to suppress conducted EMI signals. Chip inductor beads can be used in an array of devices such as cellular phones, computers, laptops, pagers, etc. The small package sizes accommodate automated placements and allow for a dense packaging of circuit boards.

Chip Inductor Beads are available in standard, high and GHz signal speeds.

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Ferrite Bead Case / Package
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4142764

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 10.600
50+
kr 10.500
250+
kr 10.060
500+
kr 8.910
1000+
kr 8.560
Min: 5 / Mult: 5
2220 [5550 Metric]
250ohm
4A
WE-CBF Series
0.012ohm
± 25%
5.6mm
5.1mm
1.8mm
SMD
-55°C
125°C
AEC-Q200
4142764RL

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
50+
kr 10.500
250+
kr 10.060
500+
kr 8.910
1000+
kr 8.560
Min: 100 / Mult: 5
2220 [5550 Metric]
250ohm
4A
WE-CBF Series
0.012ohm
± 25%
5.6mm
5.1mm
1.8mm
SMD
-55°C
125°C
AEC-Q200
3517397RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
10+
kr 1.160
100+
kr 0.884
500+
kr 0.789
1000+
kr 0.676
2000+
kr 0.663
Min: 10 / Mult: 10
0603 [1608 Metric]
28ohm
4A
Z-PWS Series
7000µohm
± 30%
1.6mm
0.8mm
0.8mm
SMD
-40°C
125°C
-
3517420RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
kr 3.910
500+
kr 3.570
Min: 100 / Mult: 10
1812 [4532 Metric]
680ohm
4A
Z-PWZ Series
0.028ohm
± 25%
4.5mm
3.2mm
3.2mm
SMD
-40°C
125°C
-
3517420

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 4.620
50+
kr 4.290
100+
kr 3.910
500+
kr 3.570
Min: 10 / Mult: 10
1812 [4532 Metric]
680ohm
4A
Z-PWZ Series
0.028ohm
± 25%
4.5mm
3.2mm
3.2mm
SMD
-40°C
125°C
-
3517397

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 1.160
100+
kr 0.884
500+
kr 0.789
1000+
kr 0.676
2000+
kr 0.663
Min: 10 / Mult: 10
0603 [1608 Metric]
28ohm
4A
Z-PWS Series
7000µohm
± 30%
1.6mm
0.8mm
0.8mm
SMD
-40°C
125°C
-
1308788

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 1.050
50+
kr 0.779
250+
kr 0.724
500+
kr 0.661
1500+
kr 0.621
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
80ohm
4A
MFB Series
0.03ohm
± 25%
3.2mm
1.6mm
1.1mm
SMD
-55°C
125°C
-
1635772

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 3.510
50+
kr 3.080
250+
kr 2.690
500+
kr 2.620
1000+
kr 2.550
Min: 5 / Mult: 5
1806 [4516 Metric]
110ohm
4A
WE-CBF Series
0.035ohm
± 25%
4.5mm
1.6mm
1.6mm
SMD
-55°C
125°C
AEC-Q200
1635781

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
1+
kr 4.730
50+
kr 3.470
100+
kr 3.210
250+
kr 3.040
500+
kr 2.980
Min: 1 / Mult: 1
1812 [4532 Metric]
880ohm
4A
WE-CBF Series
0.035ohm
± 25%
4.5mm
3.2mm
1.5mm
SMD
-55°C
125°C
AEC-Q200
2901681

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 2.170
100+
kr 1.530
500+
kr 1.330
1000+
kr 1.190
2000+
kr 1.060
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
180ohm
4A
EMIFIL BLM21SP Series
0.02ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
AEC-Q200
2761627

RoHS

Date/Lot Code

Each (Supplied on Full Reel)
Full Reel
Packaging Options
1000+
kr 2.830
Min: 1000 / Mult: 1000
1812 [4532 Metric]
880ohm
4A
WE-CBF Series
0.035ohm
± 25%
4.5mm
3.2mm
1.5mm
SMD
-55°C
125°C
AEC-Q200
2871331

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 5.730
50+
kr 3.100
250+
kr 2.340
500+
kr 2.050
1000+
kr 1.900
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
120ohm
4A
EMIFIL BLM31KN Series
9000µohm
± 25%
3.2mm
1.6mm
1.6mm
SMD
-55°C
150°C
AEC-Q200
3516872

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 0.947
100+
kr 0.654
500+
kr 0.496
1000+
kr 0.350
2000+
kr 0.343
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
100ohm
4A
MPZ Series
0.02ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
AEC-Q200
2292369

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 1.010
100+
kr 0.857
500+
kr 0.744
2500+
kr 0.704
7500+
kr 0.636
More Pricing...
Min: 10 / Mult: 10
1206 [3216 Metric]
120ohm
4A
HI Series
0.03ohm
-
3.2mm
1.6mm
1.6mm
SMD
-40°C
125°C
-
2292382

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 9.480
100+
kr 6.370
500+
kr 5.970
2500+
kr 5.350
4000+
kr 5.240
More Pricing...
Min: 10 / Mult: 10
2220 [5550 Metric]
600ohm
4A
HI Series
0.025ohm
-
5.59mm
5.08mm
5.08mm
SMD
-40°C
125°C
-
1635702

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 2.060
100+
kr 1.610
500+
kr 1.290
1000+
kr 1.180
2000+
kr 1.160
Min: 10 / Mult: 10
0603 [1608 Metric]
28ohm
4A
WE-CBF Series
0.03ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
AEC-Q200
1308773

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 0.847
100+
kr 0.630
500+
kr 0.585
1000+
kr 0.533
2000+
kr 0.501
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
40ohm
4A
MFB Series
0.03ohm
± 25%
2mm
1.25mm
0.9mm
SMD
-55°C
125°C
-
2443253

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 1.250
100+
kr 0.880
500+
kr 0.665
1000+
kr 0.508
2000+
kr 0.469
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
30ohm
4A
EMIFIL BLM21PG Series
0.014ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
AEC-Q200
2800780

RoHS

Date/Lot Code

Each (Supplied on Full Reel)
Full Reel
Packaging Options
4000+
kr 0.315
Min: 4000 / Mult: 4000
0805 [2012 Metric]
100ohm
4A
MPZ Series
0.02ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
2894687

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 2.910
50+
kr 2.470
250+
kr 2.250
500+
kr 2.150
1500+
kr 2.060
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
80ohm
4A
WE-CBF Series
0.02ohm
± 25%
3.2mm
1.6mm
1.1mm
SMD
-55°C
125°C
AEC-Q200
3227828

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 2.920
100+
kr 2.010
500+
kr 1.470
1000+
kr 1.350
2000+
kr 1.220
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
180ohm
4A
EMIFIL BLM21SP Series
0.02ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
150°C
AEC-Q200
3471155

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 4.180
50+
kr 2.300
250+
kr 1.740
500+
kr 1.460
1000+
kr 1.300
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
470ohm
4A
EMIFIL BLM31KN Series
0.02ohm
± 25%
3.2mm
1.6mm
1.6mm
SMD
-55°C
125°C
-
1635702RL

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
kr 1.610
500+
kr 1.290
1000+
kr 1.180
2000+
kr 1.160
Min: 100 / Mult: 10
0603 [1608 Metric]
28ohm
4A
WE-CBF Series
0.03ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
AEC-Q200
2066852

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
5+
kr 13.720
50+
kr 13.600
250+
kr 13.130
500+
kr 12.540
1000+
kr 11.950
More Pricing...
Min: 5 / Mult: 5
2220 [5550 Metric]
550ohm
4A
WE-MPSB Series
0.035ohm
± 25%
5.6mm
5.1mm
2mm
SMD
-55°C
125°C
AEC-Q200
2467190

RoHS

Date/Lot Code

Each (Supplied on Cut Tape)
Cut Tape
10+
kr 3.820
100+
kr 3.210
500+
kr 2.660
1000+
kr 2.540
2000+
kr 2.370
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
80ohm
4A
WE-MPSB Series
0.018ohm
± 25%
2mm
1.2mm
0.9mm
SMD
-55°C
125°C
AEC-Q200
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