Ferrite Beads

"

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

"

...
Read more Read less

Filters

Viewing 61 - 80 of 889 products
Results per page
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. 167-4909
Mfr. Part No.BLA2ABD121SN4D
BrandMurata
$0.226
Each (On a Reel of 10000)
units
0804 (2010M) - 120Ω - - - 200mA Chip Ferrite Bead 2 x 1 x 0.5mm 2mm 1mm 0.5mm - EMI Suppression Filter, High Speed Signal Lines
RS Stock No. 724-1403
Mfr. Part No.BLM18PG300SN1D
BrandMurata
$0.081
Each (In a Pack of 25)
units
0603 (1608M) - 30Ω - - - 1A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, Power Supplies
RS Stock No. 467-3797
Mfr. Part No.2944666631
BrandFair-Rite
$0.561
Each (In a Pack of 10)
units
Radial - 690Ω - - - - Bead 6 (Dia.) x 10mm 10mm - - 6mm EMI Suppression
RS Stock No. 669-4086
Mfr. Part No.742792021
$0.376
Each (In a Pack of 10)
units
0805 (2012M) - 22Ω - - - 6A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 839-0825
Mfr. Part No.BLM31PG601SH1L
BrandMurata
$0.318
Each (In a Bag of 10)
units
1206 (3216M) - 600Ω - - - 1.5A Chip Ferrite Bead 3.2 x 1.6 x 1.1mm 3.2mm 1.6mm 1.1mm - EMI Suppression Filter, Power Supplies
RS Stock No. 172-9960
Mfr. Part No.2743021447
BrandFair-Rite
$0.142
Each (On a Reel of 2800)
units
SMD 56Ω 95Ω - - - - Bead 9.6 x 3.05 x 2.85mm 9.6mm 3.05mm 2.85mm - EMI Suppression
RS Stock No. 164-5830
Mfr. Part No.4-1624116-6
$0.117
Each (On a Reel of 4000)
units
0603 (1608M) - 600Ω - - - 100mA Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS Stock No. 811-9629
Mfr. Part No.BLM18RK471SN1D
BrandMurata
$0.094
Each (In a Bag of 25)
units
0603 (1608M) - 470Ω - - - 200mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Digital Interface, EMI Suppression Filter
RS Stock No. 863-7164
Mfr. Part No.3-1624116-9
$0.201
Each (In a Bag of 100)
units
0603 (1608M) - 1500Ω - - - 200mA Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS Stock No. 741-3141
Mfr. Part No.MMZ1608S800AT
BrandTDK
$0.051
Each (In a Bag of 100)
units
0603 (1608M) - 80Ω - - - 500mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Signal Line
RS Stock No. 230-3834
Mfr. Part No.BLM21BD102SN1D
BrandMurata
$0.143
Each (In a Pack of 20)
units
0805 (2012M) - 1000Ω - - - 200mA Chip Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - EMI Suppression Filter, High Speed Signal Lines
RS Stock No. 124-1518
Mfr. Part No.7427504
$0.809
Each (In a Pack of 20)
units
Axial 702Ω 773Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm 10mm - 10mm 6mm Digital Devices, PCB, Radio Frequency Interferences, Text Processing
RS Stock No. 167-3813
Mfr. Part No.BLM15HD601SN1D
BrandMurata
$0.084
Each (On a Reel of 10000)
units
0402 (1005M) - 600Ω - - 1400Ω 300mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, GHz Band High-speed Signal Lines
RS Stock No. 124-1859
Mfr. Part No.74279267
$0.294
Each (In a Pack of 50)
units
0603 (1608M) - 60Ω - - - 500mA Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Anti EMI, Control Signals, DC/DC Converter, Fast Bus Signals, HDD, High Current, High Frequency, High Speed, Line Filter, LVDS, Power Supply, RS232, RS422, USB 2.0
RS Stock No. 167-4981
Mfr. Part No.BLM18KG331SN1D
BrandMurata
$0.036
Each (On a Reel of 4000)
units
0603 (1608M) - 330Ω - - - 1.7A Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, GHz Band Digital Interface
RS Stock No. 181-1372
Mfr. Part No.BLM21SP181SH1D
BrandMurata
$0.153
Each (On a Reel of 4000)
units
2012 - 180Ω - - - 4A Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - -
RS Stock No. 167-4806
Mfr. Part No.BLM31PG601SH1L
BrandMurata
$0.19
Each (On a Reel of 3000)
units
1206 (3216M) - 600Ω - - - 1.5A Chip Ferrite Bead 3.2 x 1.6 x 1.1mm 3.2mm 1.6mm 1.1mm - EMI Suppression Filter, Power Supplies
RS Stock No. 741-3194
Mfr. Part No.MPZ1608S221AT
BrandTDK
$0.064
Each (In a Bag of 100)
units
0603 (1608M) - 220Ω - - - 2.2A Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS Stock No. 122-5336
Mfr. Part No.BLM31PG391SH1L
BrandMurata
$0.178
Each (On a Reel of 3000)
units
1206 (3216M) - 390Ω - - - 2A Chip Ferrite Bead 3.2 x 1.6 x 1.1mm 3.2mm 1.6mm 1.1mm - Automotive, Powertrain, Safety
RS Stock No. 747-4708
Mfr. Part No.BLM18BB151SN1D
BrandMurata
$0.057
Each (In a Bag of 100)
units
0603 (1608M) - 150Ω - - - 450mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, High Speed Signal Lines