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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2066855

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
RM3.200
50+
RM3.060
250+
RM2.850
500+
RM2.750
1000+
RM2.600
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Min: 5 / Mult: 5
1812 [4532 Metric]
100ohm
8A
WE-MPSB Series
0.006ohm
± 25%
4.5mm
3.2mm
2.3mm
SMD
-55°C
125°C
AEC-Q200
1781094

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.293
100+
RM0.202
500+
RM0.160
1000+
RM0.129
2000+
RM0.117
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Min: 10 / Mult: 10
0603 [1608 Metric]
600ohm
1.3A
EMIFIL BLM18KG Series
0.15ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2292441

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.668
250+
RM0.397
1000+
RM0.310
5000+
RM0.210
10000+
RM0.207
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Min: 10 / Mult: 10
0805 [2012 Metric]
150ohm
800mA
LI Series
0.15ohm
-
2mm
1.25mm
1.25mm
SMD
-40°C
125°C
-
1515716

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.765
100+
RM0.544
500+
RM0.414
1000+
RM0.362
2000+
RM0.318
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Min: 10 / Mult: 10
0603 [1608 Metric]
220ohm
2A
EMIFIL BLM18EG Series
0.05ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2292460

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.780
250+
RM0.461
1000+
RM0.358
5000+
RM0.273
10000+
RM0.268
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Min: 10 / Mult: 10
0805 [2012 Metric]
600ohm
1.5A
MI Series
0.1ohm
-
2mm
1.25mm
1.25mm
SMD
-40°C
125°C
-
1515723

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.774
100+
RM0.544
500+
RM0.414
1000+
RM0.362
2000+
RM0.318
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Min: 10 / Mult: 10
0603 [1608 Metric]
600ohm
500mA
EMIFIL BLM18EG Series
0.35ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
3056533

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.813
100+
RM0.518
500+
RM0.370
1000+
RM0.312
2000+
RM0.289
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Min: 10 / Mult: 10
0805 [2012 Metric]
1kohm
200mA
MLS Series
0.5ohm
± 25%
2mm
1.25mm
0.9mm
SMD
-55°C
125°C
-
2292412

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.695
250+
RM0.414
1000+
RM0.324
5000+
RM0.245
10000+
RM0.241
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
600ohm
500mA
HZ Series
0.3ohm
-
2mm
1.25mm
1.25mm
SMD
-40°C
125°C
-
1781090

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.277
100+
RM0.202
500+
RM0.160
1000+
RM0.129
2000+
RM0.114
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
220ohm
2.2A
EMIFIL BLM18KG Series
0.05ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
1515741

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.283
100+
RM0.198
500+
RM0.156
1000+
RM0.137
2000+
RM0.116
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
30ohm
1A
EMIFIL BLM18PG Series
0.05ohm
-
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2292457

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.866
250+
RM0.528
1000+
RM0.421
5000+
RM0.327
10000+
RM0.321
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
1kohm
1A
MI Series
0.15ohm
-
2mm
1.25mm
1.25mm
SMD
-40°C
125°C
-
1781089

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.293
100+
RM0.202
500+
RM0.160
1000+
RM0.133
2000+
RM0.112
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
120ohm
3A
EMIFIL BLM18KG Series
0.03ohm
± 25%
1.6mm
0.8mm
0.6mm
SMD
-55°C
125°C
-
1515762

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.202
100+
RM0.147
500+
RM0.114
2500+
RM0.076
5000+
RM0.072
More Pricing...
Min: 10 / Mult: 10
0402 [1005 Metric]
600ohm
300mA
EMIFIL BLM15AG Series
0.6ohm
± 25%
1mm
0.5mm
0.5mm
SMD
-55°C
125°C
-
1515672

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.263
100+
RM0.184
500+
RM0.147
1000+
RM0.133
2000+
RM0.121
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Min: 10 / Mult: 10
0603 [1608 Metric]
120ohm
500mA
EMIFIL BLM18AG Series
0.18ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2292459

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.730
250+
RM0.432
1000+
RM0.335
5000+
RM0.227
10000+
RM0.223
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
40ohm
1.5A
MI Series
0.05ohm
-
2mm
1.25mm
1.25mm
SMD
-40°C
125°C
-
1515663

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.362
100+
RM0.255
500+
RM0.198
1000+
RM0.160
2000+
RM0.149
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
330ohm
1.5A
EMIFIL BLM21PG Series
0.07ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
1515660

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.522
100+
RM0.366
500+
RM0.277
1000+
RM0.212
2000+
RM0.194
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
220ohm
2A
EMIFIL BLM21PG Series
0.045ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
AEC-Q200
1515659

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.366
100+
RM0.259
500+
RM0.198
1000+
RM0.137
2000+
RM0.130
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
22ohm
6A
EMIFIL BLM21PG Series
0.009ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
1515738

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.277
100+
RM0.189
500+
RM0.156
1000+
RM0.137
2000+
RM0.118
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
120ohm
2A
EMIFIL BLM18PG Series
0.05ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2475050

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.344
100+
RM0.240
500+
RM0.184
1000+
RM0.147
2000+
RM0.145
Min: 10 / Mult: 10
0805 [2012 Metric]
600ohm
2A
MPZ Series
0.1ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
1515662

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.353
100+
RM0.255
500+
RM0.194
1000+
RM0.160
2000+
RM0.140
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
30ohm
3A
EMIFIL BLM21PG Series
0.014ohm
-
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
2443237

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.673
100+
RM0.503
500+
RM0.392
1000+
RM0.236
2000+
RM0.234
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
1.5kohm
500mA
EMIFIL BLM18HE Series
0.5ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
1515746

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.259
100+
RM0.189
500+
RM0.151
1000+
RM0.137
2000+
RM0.116
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
60ohm
500mA
EMIFIL BLM18PG Series
0.1ohm
-
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
2467191

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
RM2.020
50+
RM1.850
250+
RM1.540
500+
RM1.390
1500+
RM1.340
More Pricing...
Min: 5 / Mult: 5
1206 [3216 Metric]
10ohm
10.5A
WE-MPSB Series
0.003ohm
± 25%
3.2mm
1.6mm
1.1mm
SMD
-55°C
125°C
AEC-Q200
1515661

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.353
100+
RM0.255
500+
RM0.208
1000+
RM0.156
2000+
RM0.143
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
220ohm
2A
EMIFIL BLM21PG Series
0.045ohm
± 25%
2mm
1.25mm
0.85mm
SMD
-55°C
125°C
-
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