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
Impedance
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Product Width
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Ferrite Mounting
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2889887

RoHS

Each
10+
$0.102
($0.1173)
100+
$0.069
($0.0794)
500+
$0.062
($0.0713)
2500+
$0.057
($0.0656)
7500+
$0.057
($0.0656)
More Pricing...
Min: 10 / Mult: 10
0201 [0603 Metric]
220ohm
200mA
MFB Series
0.75ohm
± 25%
0.6mm
0.3mm
0.3mm
SMD
-55°C
125°C
-
3237530

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
$0.293
($0.337)
50+
$0.273
($0.314)
250+
$0.248
($0.2852)
500+
$0.232
($0.2668)
1500+
$0.195
($0.2242)
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
48ohm
4A
WE-CBF Series
0.005ohm
± 25%
3.2mm
1.6mm
1.1mm
SMD
-55°C
125°C
AEC-Q200
3365726

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$1.680
($1.932)
50+
$1.400
($1.610)
100+
$1.120
($1.288)
500+
$1.010
($1.1615)
1500+
$0.997
($1.1466)
More Pricing...
Min: 10 / Mult: 10
Radial Leaded
-
5A
BEAD L Series
-
-
10.5mm
4.2mm
6mm
Through Hole
-20°C
70°C
-
3365729

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$1.490
($1.7135)
50+
$1.330
($1.5295)
100+
$1.160
($1.334)
500+
$1.030
($1.1845)
1500+
$0.912
($1.0488)
More Pricing...
Min: 10 / Mult: 10
Radial Leaded
-
5A
BEAD L Series
-
-
7mm
2.5mm
6mm
Through Hole
-20°C
70°C
-
3365721

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.896
($1.0304)
50+
$0.785
($0.9028)
100+
$0.673
($0.774)
500+
$0.594
($0.6831)
1000+
$0.593
($0.682)
More Pricing...
Min: 10 / Mult: 10
Radial Leaded
-
5A
BEAD L Series
-
-
-
-
13mm
Through Hole
-20°C
70°C
-
3373308

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.106
($0.1219)
100+
$0.076
($0.0874)
500+
$0.059
($0.0678)
1000+
$0.052
($0.0598)
2000+
$0.049
($0.0564)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
80ohm
3A
MH1608 Series
0.04ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
1308770RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
$0.094
($0.1081)
1000+
$0.081
($0.0932)
2000+
$0.075
($0.0862)
4000+
$0.072
($0.0828)
20000+
$0.068
($0.0782)
Min: 500 / Mult: 10
0603 [1608 Metric]
600ohm
1A
MFB Series
0.2ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2443227RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
$0.445
($0.5118)
500+
$0.329
($0.3784)
2500+
$0.268
($0.3082)
5000+
$0.264
($0.3036)
10000+
$0.258
($0.2967)
Min: 100 / Mult: 10
0402 [1005 Metric]
220ohm
300mA
EMIFIL BLM15GG Series
0.7ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2443227

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.648
($0.7452)
100+
$0.445
($0.5118)
500+
$0.329
($0.3784)
2500+
$0.268
($0.3082)
5000+
$0.264
($0.3036)
More Pricing...
Min: 10 / Mult: 10
0402 [1005 Metric]
220ohm
300mA
EMIFIL BLM15GG Series
0.7ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2443225

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.077
($0.0886)
100+
$0.056
($0.0644)
500+
$0.043
($0.0494)
2500+
$0.029
($0.0333)
5000+
$0.027
($0.031)
More Pricing...
Min: 10 / Mult: 10
0402 [1005 Metric]
33ohm
300mA
EMIFIL BLM15BA Series
0.4ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2889896

RoHS

Each
10+
$0.049
($0.0564)
100+
$0.036
($0.0414)
500+
$0.035
($0.0402)
2500+
$0.032
($0.0368)
5000+
$0.030
($0.0345)
More Pricing...
Min: 10 / Mult: 10
0402 [1005 Metric]
470ohm
100mA
MFB Series
0.9ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2889895

RoHS

Each
10+
$0.050
($0.0575)
100+
$0.036
($0.0414)
500+
$0.033
($0.0379)
2500+
$0.031
($0.0356)
5000+
$0.029
($0.0333)
More Pricing...
Min: 1 / Mult: 1
0402 [1005 Metric]
300ohm
100mA
MFB Series
0.75ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2889905

RoHS

Each
10+
$0.046
($0.0529)
100+
$0.035
($0.0402)
500+
$0.032
($0.0368)
1000+
$0.030
($0.0345)
2000+
$0.028
($0.0322)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
180ohm
400mA
MFB Series
0.2ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2889889

RoHS

Each
10+
$0.049
($0.0564)
100+
$0.036
($0.0414)
500+
$0.035
($0.0402)
2500+
$0.032
($0.0368)
5000+
$0.030
($0.0345)
More Pricing...
Min: 10 / Mult: 10
0402 [1005 Metric]
10ohm
500mA
MFB Series
0.05ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
2889888

RoHS

Each
10+
$0.083
($0.0954)
100+
$0.057
($0.0656)
500+
$0.051
($0.0586)
2500+
$0.048
($0.0552)
7500+
$0.048
($0.0552)
More Pricing...
Min: 10 / Mult: 10
0201 [0603 Metric]
300ohm
150mA
MFB Series
0.9ohm
± 25%
0.6mm
0.3mm
0.3mm
SMD
-55°C
125°C
-
2889901

RoHS

Each
10+
$0.046
($0.0529)
100+
$0.035
($0.0402)
500+
$0.032
($0.0368)
1000+
$0.030
($0.0345)
2000+
$0.028
($0.0322)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
80ohm
400mA
MFB Series
0.15ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2889906

RoHS

Each
10+
$0.046
($0.0529)
100+
$0.035
($0.0402)
500+
$0.032
($0.0368)
1000+
$0.030
($0.0345)
2000+
$0.028
($0.0322)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
220ohm
400mA
MFB Series
0.2ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
3386805

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.108
($0.1242)
100+
$0.076
($0.0874)
500+
$0.059
($0.0678)
1000+
$0.052
($0.0598)
2000+
$0.043
($0.0494)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
30ohm
1.5A
MMZ Series
0.05ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
AEC-Q200
3386853

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.177
($0.2036)
100+
$0.147
($0.169)
500+
$0.125
($0.1437)
1000+
$0.106
($0.1219)
2000+
$0.099
($0.1138)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
50ohm
500mA
KMZ-HR Series
0.25ohm
± 25%
1.6mm
0.8mm
0.6mm
SMD
-55°C
150°C
AEC-Q200
3351084

RoHS

Each (Supplied on Full Reel)
Full Reel
2500+
$0.174
($0.2001)
12500+
$0.171
($0.1966)
25000+
$0.167
($0.192)
Min: 2500 / Mult: 2500
1206 [3216 Metric]
1kohm
2A
EMIFIL BLM31KN Series
0.075ohm
± 25%
3.2mm
1.6mm
1.6mm
SMD
-55°C
125°C
-
3288804

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.191
($0.2196)
100+
$0.144
($0.1656)
500+
$0.125
($0.1437)
1000+
$0.104
($0.1196)
2000+
$0.090
($0.1035)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
470ohm
1.1A
EMIFIL BLM18KG Series
0.16ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
AEC-Q200
3386801

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.097
($0.1116)
100+
$0.076
($0.0874)
500+
$0.059
($0.0678)
1000+
$0.052
($0.0598)
2000+
$0.043
($0.0494)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
80ohm
500mA
MMZ Series
0.15ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
AEC-Q200
3237556

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.394
($0.4531)
100+
$0.323
($0.3714)
500+
$0.298
($0.3427)
1000+
$0.268
($0.3082)
2000+
$0.259
($0.2978)
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
1kohm
300mA
WE-CBA Series
0.35ohm
± 25%
2mm
1.2mm
0.9mm
SMD
-55°C
125°C
AEC-Q200
3237556RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
100+
$0.323
($0.3714)
500+
$0.298
($0.3427)
1000+
$0.268
($0.3082)
2000+
$0.259
($0.2978)
4000+
$0.251
($0.2886)
Min: 100 / Mult: 10
0805 [2012 Metric]
1kohm
300mA
WE-CBA Series
0.35ohm
± 25%
2mm
1.2mm
0.9mm
SMD
-55°C
125°C
AEC-Q200
3288798

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
$0.164
($0.1886)
100+
$0.136
($0.1564)
500+
$0.118
($0.1357)
1000+
$0.100
($0.115)
2000+
$0.089
($0.1024)
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
30ohm
1.85A
EMIFIL BLM18KG Series
0.035ohm
± 25%
1.6mm
0.8mm
0.6mm
SMD
-55°C
125°C
AEC-Q200
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