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


DVD’s


Gaming Systems

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Omschrijving Prijs 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-stocknr. 172-9976
Fabrikantnummer2961666671
FabrikantFair-Rite
0,255 €
Each (In a Box of 200)
Aantal stuks
Axial - 780Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
RS-stocknr. 467-3927
Fabrikantnummer2961666671
FabrikantFair-Rite
0,313 €
Each (In a Pack of 10)
Aantal stuks
Axial - 780Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
RS-stocknr. 467-3315
Fabrikantnummer2743002112
FabrikantFair-Rite
0,095 €
Each (In a Pack of 50)
Aantal stuks
Axial 88Ω 133Ω - - - - Bead 3.5 (Dia.) x 8.9mm 8.9mm - - 3.5mm EMI Suppression
RS-stocknr. 172-9954
Fabrikantnummer2743002112
FabrikantFair-Rite
0,063 €
Each (On a Reel of 4500)
Aantal stuks
Axial 88Ω 133Ω - - - - Bead 3.5 (Dia.) x 8.9mm 8.9mm - - 3.5mm EMI Suppression
RS-stocknr. 172-9975
Fabrikantnummer2944666631
FabrikantFair-Rite
0,202 €
Each (In a Box of 200)
Aantal stuks
Radial - 690Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
RS-stocknr. 172-9958
Fabrikantnummer2761001112
FabrikantFair-Rite
0,063 €
Each (On a Reel of 4500)
Aantal stuks
Axial - 56Ω - - - - Bead 3.5 (Dia.) x 4.45mm 4.45mm - - 3.5mm EMI Suppression
RS-stocknr. 172-9955
Fabrikantnummer2743003112
FabrikantFair-Rite
0,063 €
Each (On a Reel of 4500)
Aantal stuks
Axial 65Ω 100Ω - - - - Bead 3.5 (Dia.) x 6.7mm 6.7mm - - 3.5mm EMI Suppression
RS-stocknr. 172-9969
Fabrikantnummer2773008112
FabrikantFair-Rite
0,15 €
Each (On a Reel of 4500)
Aantal stuks
Axial 145Ω - - - - - Bead 3.5 (Dia.) x 11.4mm 11.4mm - - 3.5mm EMI Suppression
RS-stocknr. 172-9984
Fabrikantnummer2944777741
FabrikantFair-Rite
0,514 €
Each (In a Box of 79)
Aantal stuks
Axial - 500Ω - - - - Bead 10 (Dia.) x 10mm 10mm - - 10mm EMI Suppression
RS-stocknr. 467-3725
Fabrikantnummer2943666651
FabrikantFair-Rite
0,72 €
Each (In a Pack of 10)
Aantal stuks
Radial - - - - - - Multi Aperture Core - - - - - Broadband Transformers
RS-stocknr. 172-9960
Fabrikantnummer2743021447
FabrikantFair-Rite
0,075 €
Each (On a Reel of 2800)
Aantal stuks
SMD 56Ω 95Ω - - - - Bead 9.6 x 3.05 x 2.85mm 9.6mm 3.05mm 2.85mm - EMI Suppression
RS-stocknr. 172-9951
Fabrikantnummer2743001112
FabrikantFair-Rite
0,05 €
Each (On a Reel of 4500)
Aantal stuks
Axial 61Ω - - - - - Bead 3.5 (Dia.) x 4.45mm 4.45mm - - 3.5mm EMI Suppression
RS-stocknr. 467-3444
Fabrikantnummer2761001112
FabrikantFair-Rite
0,09 €
Each (In a Pack of 25)
Aantal stuks
Axial - 52Ω - - - - Bead 3.5 (Dia.) x 4.45mm 4.45mm - - 3.5mm EMI Suppression
RS-stocknr. 467-3488
Fabrikantnummer2773008112
FabrikantFair-Rite
0,168 €
Each (In a Pack of 25)
Aantal stuks
Axial 145Ω - - - - - Bead 3.5 (Dia.) x 11.4mm 11.4mm - - 3.5mm EMI Suppression
RS-stocknr. 467-3797
Fabrikantnummer2944666631
FabrikantFair-Rite
0,291 €
Each (In a Pack of 10)
Aantal stuks
Radial - 690Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
RS-stocknr. 467-3321
Fabrikantnummer2743003112
FabrikantFair-Rite
0,085 €
Each (In a Pack of 50)
Aantal stuks
Axial 65Ω 100Ω - - - - Bead 3.5 (Dia.) x 6.7mm 6.7mm - - 3.5mm EMI Suppression
RS-stocknr. 467-3292
Fabrikantnummer2743001112
FabrikantFair-Rite
0,066 €
Each (In a Pack of 50)
Aantal stuks
Axial 61Ω - - - - - Bead 3.5 (Dia.) x 4.45mm 4.45mm - - 3.5mm EMI Suppression
RS-stocknr. 467-3365
Fabrikantnummer2743021447
FabrikantFair-Rite
0,091 €
Each (In a Pack of 25)
Aantal stuks
SMD 56Ω 95Ω - - - - Bead 9.6 x 3.05 x 2.85mm 9.6mm 3.05mm 2.85mm - EMI Suppression
RS-stocknr. 467-3781
Fabrikantnummer2944777741
FabrikantFair-Rite
0,526 €
Each (In a Pack of 5)
Aantal stuks
Axial - 500Ω - - - - Bead 10 (Dia.) x 10mm 10.25mm - - 10.25mm EMI Suppression
RS-stocknr. 467-3810
Fabrikantnummer2944666651
FabrikantFair-Rite
0,28 €
Each (In a Pack of 10)
Aantal stuks
Radial - 600Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression