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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Ferrite Mounting
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3056533

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.808
100+
RM0.514
500+
RM0.367
1000+
RM0.304
2000+
RM0.281
More Pricing...
Min: 10 / Mult: 10
0805 [2012 Metric]
1kohm
200mA
MLS Series
0.5ohm
± 25%
2mm
1.25mm
0.9mm
SMD
-55°C
125°C
-
2800773

RoHS

Each (Supplied on Full Reel)
Full Reel
4000+
RM0.093
20000+
RM0.093
Min: 4000 / Mult: 4000
0603 [1608 Metric]
220ohm
2.2A
MPZ Series
0.05ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
3056508

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.412
100+
RM0.262
500+
RM0.187
1000+
RM0.155
2000+
RM0.143
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
600ohm
210mA
MLS Series
0.45ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
3056533RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
RM0.367
1000+
RM0.304
2000+
RM0.281
4000+
RM0.274
Min: 500 / Mult: 10
0805 [2012 Metric]
1kohm
200mA
MLS Series
0.5ohm
± 25%
2mm
1.25mm
0.9mm
SMD
-55°C
125°C
-
3056508RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
RM0.187
1000+
RM0.155
2000+
RM0.143
4000+
RM0.140
Min: 500 / Mult: 10
0603 [1608 Metric]
600ohm
210mA
MLS Series
0.45ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
3678446RL

RoHS

Each (Supplied on Cut Tape)
Re-Reel
Packaging Options
500+
RM0.570
1000+
RM0.515
2500+
RM0.499
5000+
RM0.481
10000+
RM0.453
Min: 500 / Mult: 10
0201 [0603 Metric]
1.2kohm
100mA
EMIFIL BLM03HG Series
3.5ohm
± 25%
0.6mm
0.3mm
0.3mm
SMD
-55°C
125°C
AEC-Q200
3678446

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.850
100+
RM0.680
250+
RM0.615
500+
RM0.570
1000+
RM0.515
More Pricing...
Min: 10 / Mult: 10
0201 [0603 Metric]
1.2kohm
100mA
EMIFIL BLM03HG Series
3.5ohm
± 25%
0.6mm
0.3mm
0.3mm
SMD
-55°C
125°C
AEC-Q200
2066855

RoHS

Each (Supplied on Cut Tape)
Cut Tape
5+
RM3.370
50+
RM3.220
250+
RM2.990
500+
RM2.890
1000+
RM2.740
More Pricing...
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+
RM0.307
100+
RM0.213
500+
RM0.170
1000+
RM0.135
2000+
RM0.122
More Pricing...
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+
RM0.297
250+
RM0.198
1000+
RM0.195
5000+
RM0.172
10000+
RM0.169
More Pricing...
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+
RM0.805
100+
RM0.574
500+
RM0.435
1000+
RM0.380
2000+
RM0.334
More Pricing...
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+
RM0.819
250+
RM0.485
1000+
RM0.376
5000+
RM0.288
10000+
RM0.283
More Pricing...
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+
RM0.815
100+
RM0.574
500+
RM0.435
1000+
RM0.380
2000+
RM0.334
More Pricing...
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
-
2292412

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.731
250+
RM0.435
1000+
RM0.342
5000+
RM0.258
10000+
RM0.253
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+
RM0.293
100+
RM0.213
500+
RM0.170
1000+
RM0.116
2000+
RM0.113
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
-
1669743

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.224
100+
RM0.163
500+
RM0.139
1000+
RM0.125
2000+
RM0.123
Min: 10 / Mult: 10
0603 [1608 Metric]
100ohm
3A
MPZ Series
0.03ohm
± 25%
1.6mm
0.8mm
0.6mm
SMD
-55°C
125°C
-
1515741

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.297
100+
RM0.208
500+
RM0.163
1000+
RM0.145
2000+
RM0.122
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+
RM0.910
250+
RM0.554
1000+
RM0.441
5000+
RM0.344
10000+
RM0.338
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+
RM0.307
100+
RM0.213
500+
RM0.170
1000+
RM0.125
2000+
RM0.110
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
-
1515738

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.293
100+
RM0.198
500+
RM0.163
1000+
RM0.145
2000+
RM0.125
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
-
1515746

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.272
100+
RM0.198
500+
RM0.159
1000+
RM0.145
2000+
RM0.122
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
-
1515762

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.213
100+
RM0.154
500+
RM0.120
2500+
RM0.081
5000+
RM0.076
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
-
1515660

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.548
100+
RM0.386
500+
RM0.293
1000+
RM0.198
2000+
RM0.191
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
1515672

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.277
100+
RM0.194
500+
RM0.154
1000+
RM0.139
2000+
RM0.117
More Pricing...
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
-
1515749

RoHS

Each (Supplied on Cut Tape)
Cut Tape
10+
RM0.310
100+
RM0.219
500+
RM0.170
1000+
RM0.117
2000+
RM0.107
More Pricing...
Min: 10 / Mult: 10
0603 [1608 Metric]
220ohm
200mA
EMIFIL BLM18RK Series
0.3ohm
± 25%
1.6mm
0.8mm
0.8mm
SMD
-55°C
125°C
-
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