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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RS-artikelnummer 863-7269
Tillv. art.nr4-1624117-9
VarumärkeTE Connectivity
0,694 kr
Each (In a Bag of 100)
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0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - General Purpose, High frequency
RS-artikelnummer 863-7297
Tillv. art.nr1-1879855-6
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0,458 kr
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0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - High Current, Noise Filtering
RS-artikelnummer 164-5831
Tillv. art.nr4-1624116-7
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
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0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 164-5636
Tillv. art.nr1-1879855-7
VarumärkeTE Connectivity
0,425 kr
Each (On a Reel of 10000)
Enheter
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - High Current, Noise Filtering
RS-artikelnummer 164-5868
Tillv. art.nr5-1624116-8
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
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0603 (1608M) - 30Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 164-5824
Tillv. art.nr4-1624116-1
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
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0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS-artikelnummer 164-5637
Tillv. art.nr1-1879855-8
VarumärkeTE Connectivity
0,425 kr
Each (On a Reel of 10000)
Enheter
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - High Current, Noise Filtering
RS-artikelnummer 164-5796
Tillv. art.nr3-1624116-5
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0,524 kr
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0603 (1608M) - 450Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS-artikelnummer 164-5869
Tillv. art.nr5-1624116-9
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
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0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 812-0767
Tillv. art.nrBMB2A0300LN2
VarumärkeTE Connectivity
0,709 kr
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0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Signal Line, Telecom
RS-artikelnummer 164-5865
Tillv. art.nr5-1624116-5
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
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0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 164-5700
Tillv. art.nr1879855-7
VarumärkeTE Connectivity
0,425 kr
Each (On a Reel of 10000)
Enheter
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - -
RS-artikelnummer 863-7344
Tillv. art.nr5-1624117-9
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0,694 kr
Each (In a Bag of 100)
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0805 (2012M) - 20Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS-artikelnummer 863-7243
Tillv. art.nr4-1624116-2
VarumärkeTE Connectivity
0,606 kr
Each (In a Bag of 100)
Enheter
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS-artikelnummer 164-5880
Tillv. art.nr5-1624117-9
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0,667 kr
Each (On a Reel of 4000)
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0805 (2012M) - 20Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS-artikelnummer 164-5861
Tillv. art.nr5-1624116-1
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0,524 kr
Each (On a Reel of 4000)
Enheter
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 164-5803
Tillv. art.nr3-1624117-3
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0,32 kr
Each (On a Reel of 4000)
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0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS-artikelnummer 164-5832
Tillv. art.nr4-1624116-8
VarumärkeTE Connectivity
0,524 kr
Each (On a Reel of 4000)
Enheter
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS-artikelnummer 161-6309
Tillv. art.nrBMB2A0060LN2
VarumärkeTE Connectivity
0,444 kr
Each (On a Reel of 4000)
Enheter
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Signal Line, Telecom
RS-artikelnummer 863-7155
Tillv. art.nr3-1624116-5
VarumärkeTE Connectivity
0,701 kr
Each (In a Bag of 100)
Enheter
0603 (1608M) - 450Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency