Ferrite Beads

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Ferrite Beads also known as ferrite chokes are passive devices and they are used to constrict high-frequency signals in electronic components. The ferrite becomes resistive over its intended frequency range and uses up the noise energy in the form of heat.

How do the ferrite beads work?

The ferrite bead is connected in series with the power supply rail and is often combined with the capacitors to ground on either side of the bead. This then forms a low-pass filter network, further reducing the high-frequency power supply noise. Use SPICE (Simulation Program with Integrated Circuit Emphasis) or another similar tool to ensure any anti-resonance peaks caused by ferrite or PCB inductive structure does not violate the target impedance limit.

Ferrite Beads come in two categories:

High-Q Beads - typically used as resonators and must not be used in power isolation circuits

Low-Q Beads - these are also called absorptive beads and they are lossy and make good filter networks because they are designed to absorb high-frequency noise currents and dissipate it as heat

What to consider when choosing Ferrite Beads?

Make sure that any voltage drop does not cause the target supply rail to fall below the recommended operating conditions of the device

The ferrite bead is inductive, therefore do not use it with High-Q decoupling capacitors

Applying ferrite beads correctly can be an effective and inexpensive way to reduce high-frequency noise and switching transients

Where are Ferrite Beads used?

Eliminating high-frequency EMI noise on any circuit design

Electronic devices such as mobile phones

Computers and laptops

TV tuners

Audio Players

DVDs

Gaming Systems

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Description Price Package Type Impedance at 25 MHz Impedance at 100 MHz Impedance at 300 MHz Impedance at 500 MHz Impedance at 1 GHz Current Rating Type Dimensions Length Depth Height Diameter Application
RS Stock No. 863-7326
Mfr. Part No.5-1624116-3
kr 0,584
Each (In a Bag of 100)
Units
0603 (1608M) - 220Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS Stock No. 863-7354
Mfr. Part No.6-1624117-3
kr 0,669
Each (In a Bag of 100)
Units
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS Stock No. 863-7329
Mfr. Part No.5-1624116-1
kr 0,676
Each (In a Bag of 100)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS Stock No. 164-5835
Mfr. Part No.4-1624117-0
kr 0,309
Each (On a Reel of 4000)
Units
0805 (2012M) - 600Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS Stock No. 164-5800
Mfr. Part No.3-1624116-8
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - 1200Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS Stock No. 164-5872
Mfr. Part No.5-1624117-2
kr 0,643
Each (On a Reel of 4000)
Units
0805 (2012M) - 200Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS Stock No. 164-5315
Mfr. Part No.BMB2A0600BN3
kr 0,498
Each (On a Reel of 4000)
Units
0805 (2012M) - - - - - - Chip Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Frequency
RS Stock No. 863-7237
Mfr. Part No.1-1879855-5
kr 0,446
Each (In a Bag of 100)
Units
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - General Purpose, High frequency
RS Stock No. 863-7120
Mfr. Part No.2-1624116-7
kr 0,584
Each (In a Bag of 100)
Units
0603 (1608M) - 60Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS Stock No. 164-5898
Mfr. Part No.6-1624116-2
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS Stock No. 863-7344
Mfr. Part No.5-1624117-9
kr 0,669
Each (In a Bag of 100)
Units
0805 (2012M) - 20Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS Stock No. 164-5827
Mfr. Part No.4-1624116-4
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS Stock No. 863-7293
Mfr. Part No.5-1624117-7
kr 0,816
Each (In a Bag of 100)
Units
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - General Purpose, High frequency
RS Stock No. 164-5865
Mfr. Part No.5-1624116-5
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS Stock No. 863-7142
Mfr. Part No.3-1624116-3
kr 0,676
Each (In a Bag of 100)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS Stock No. 164-5807
Mfr. Part No.3-1624117-6
kr 0,309
Each (On a Reel of 4000)
Units
0805 (2012M) - 120Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS Stock No. 164-5869
Mfr. Part No.5-1624116-9
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS Stock No. 164-5797
Mfr. Part No.3-1624116-6
kr 0,505
Each (On a Reel of 4000)
Units
0603 (1608M) - 600Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS Stock No. 863-7155
Mfr. Part No.3-1624116-5
kr 0,676
Each (In a Bag of 100)
Units
0603 (1608M) - 450Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS Stock No. 863-7269
Mfr. Part No.4-1624117-9
kr 0,669
Each (In a Bag of 100)
Units
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - General Purpose, High frequency