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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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. 724-1413
FabrikantnummerBLM18PG331SN1D
FabrikantMurata
0,038 €
Each (In a Pack of 25)
Aantal stuks
0603 (1608M) - 330Ω - - - 1.2A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS-stocknr. 166-9857
FabrikantnummerBLM18PG331SN1D
FabrikantMurata
0,013 €
Each (On a Reel of 4000)
Aantal stuks
0603 (1608M) - 330Ω - - - 1.2A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS-stocknr. 747-4723
FabrikantnummerBLM18KG260TN1D
FabrikantMurata
0,03 €
Each (In a Bag of 100)
Aantal stuks
0603 (1608M) - 26Ω - - - 6A Chip Ferrite Bead 1.6 x 0.8 x 0.6mm 1.6mm 0.8mm 0.6mm - EMI Suppression Filter, GHz Band Digital Interface
RS-stocknr. 792-6274
FabrikantnummerBLM18PG121SH1D
FabrikantMurata
0,055 €
Each (In a Bag of 25)
Aantal stuks
0603 (1608M) - 120Ω - - - 2A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS-stocknr. 167-4983
FabrikantnummerBLM18PG121SH1D
FabrikantMurata
0,023 €
Each (On a Reel of 4000)
Aantal stuks
0603 (1608M) - 120Ω - - - 2A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS-stocknr. 669-4099
Fabrikantnummer742792022
FabrikantWurth Elektronik
0,19 €
Each (In a Pack of 10)
Aantal stuks
0805 (2012M) - 220Ω - - - 2A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS-stocknr. 125-3118
FabrikantnummerBLM41PF800SN1L
FabrikantMurata
0,126 €
Each (On a Reel of 2500)
Aantal stuks
1806 (4516M) - - - - - - Chip Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - General Electronics
RS-stocknr. 724-1380
FabrikantnummerBLM18PG121SN1D
FabrikantMurata
0,044 €
Each (In a Pack of 25)
Aantal stuks
0603 (1608M) - 120Ω - - - 2A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS-stocknr. 188-8643
FabrikantnummerBLM41PF800SN1L
FabrikantMurata
0,336 €
Each (In a Pack of 10)
Aantal stuks
1806 (4516M) - - - - - - Chip Ferrite Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - General Electronics
RS-stocknr. 125-3119
FabrikantnummerBLM41PG750SN1L
FabrikantMurata
0,101 €
Each (On a Reel of 2500)
Aantal stuks
1806 (4516M) - 75Ω - - - 3.5A Chip Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - Power Supplies
RS-stocknr. 177-6254
FabrikantnummerBLM41PG750SN1L
FabrikantMurata
0,101 €
Each (On a Reel of 4000)
Aantal stuks
1806 - 75Ω - - - 3.5A Filter 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - EMI Suppression, Power Line
RS-stocknr. 188-8659
FabrikantnummerBLM41PG750SN1L
FabrikantMurata
0,26 €
Each (In a Pack of 10)
Aantal stuks
1806 (4516M) - 75Ω - - - 3.5A Chip Ferrite Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - Power Supplies
RS-stocknr. 167-4832
FabrikantnummerBLM15AX601SN1D
FabrikantMurata
0,009 €
Each (On a Reel of 10000)
Aantal stuks
0402 (1005M) - 600Ω - - - 500mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, General Use
RS-stocknr. 839-0786
FabrikantnummerBLM15AX601SN1D
FabrikantMurata
0,022 €
Each (In a Bag of 100)
Aantal stuks
0402 (1005M) - 600Ω - - - 500mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, General Use
RS-stocknr. 792-6218
FabrikantnummerBLM15EG121SN1D
FabrikantMurata
0,083 €
Each (In a Bag of 25)
Aantal stuks
0402 (1005M) - 120Ω - - - 1.5A Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, GHz Band General Use (Low DC Resistance Type)
RS-stocknr. 167-4905
FabrikantnummerBLM15BB100SN1D
FabrikantMurata
0,019 €
Each (On a Reel of 10000)
Aantal stuks
0402 (1005M) - 10Ω - - - 300mA Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - High Speed Signal Lines
RS-stocknr. 787-9998
Fabrikantnummer742792620
FabrikantWurth Elektronik
0,148 €
Each (In a Bag of 10)
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0603 (1608M) - 100Ω - - - 500mA EMI Suppression 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Suppression Components
RS-stocknr. 467-3927
Fabrikantnummer2961666671
FabrikantFair-Rite
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Aantal stuks
Axial - 780Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
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FabrikantnummerBLM15BB100SN1D
FabrikantMurata
0,032 €
Each (In a Bag of 250)
Aantal stuks
0402 (1005M) - 10Ω - - - 300mA Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - High Speed Signal Lines
RS-stocknr. 110-188
FabrikantnummerBLM15EG121SN1D
FabrikantMurata
0,011 €
Each (In a Bag of 25)
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