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

DVDs

Gaming Systems


...
Read more Read less

Filters

Viewing 1 - 20 of 37 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. 795-7938
Mfr. Part No.CIM21J202NE
£0.009
Each (On a Reel of 4000)
Units
0805 (2012M) - 2000Ω - - - 500mA Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - EMI Suppression
RS Stock No. 172-8772
Mfr. Part No.CIM21J202NE
£0.008
Each (On a Reel of 10000)
Units
0805 (2012M) - 2000Ω - - - 500mA Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - EMI Suppression
RS Stock No. 795-7940
Mfr. Part No.CIM21J601NE
£0.029
Each (On a Reel of 4000)
Units
0805 (2012M) - 600Ω - - - 500mA Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - EMI Suppression
RS Stock No. 172-8773
Mfr. Part No.CIM21J601NE
£0.026
Each (On a Reel of 10000)
Units
0805 (2012M) - 600Ω - - - 500mA Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - EMI Suppression
RS Stock No. 795-7919
Mfr. Part No.CIM10U102NC
£0.007
Each (On a Reel of 4000)
Units
0603 (1608M) - 1000Ω - - - 400mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 172-8764
Mfr. Part No.CIM10U102NC
£0.017
Each (On a Reel of 10000)
Units
0603 (1608M) - 1000Ω - - - 400mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 171-1262
Mfr. Part No.CIC41P800NE
£0.096
Each (On a Reel of 1000)
Units
1806 (4516M) - 80Ω - - - 6A Chip Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - High Current
RS Stock No. 795-7650
Mfr. Part No.CIC10P221NC
£0.006
Each (On a Reel of 4000)
Units
0603 (1608M) - 220Ω - - - 1.4A Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current
RS Stock No. 795-7631
Mfr. Part No.CIB32P600NE
£0.049
Each (On a Reel of 2500)
Units
1210 (3225M) - 60Ω - - - 1.5A Chip Bead 3.2 x 2.5 x 1.3mm 3.2mm 2.5mm 1.3mm - EMI Suppression
RS Stock No. 795-7868
Mfr. Part No.CIM05U601NC
£0.021
Each (On a Reel of 10000)
Units
0603 (1608M) - 600Ω - - - 300mA Chip Bead 1.0 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression
RS Stock No. 172-8751
Mfr. Part No.CIM10J121NC
£0.008
Each (On a Reel of 10000)
Units
0603 (1608M) - 120Ω - - - 500mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 795-7679
Mfr. Part No.CIC21P600NE
£0.009
Each (On a Reel of 4000)
Units
0805 (2012M) - 60Ω - - - 3A Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - High Current
RS Stock No. 795-7874
Mfr. Part No.CIM10J121NC
£0.009
Each (On a Reel of 4000)
Units
0603 (1608M) - 120Ω - - - 500mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 795-7685
Mfr. Part No.CIC41P800NE
£0.087
Each (On a Reel of 2000)
Units
1806 (4516M) - 80Ω - - - 6A Chip Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - High Current
RS Stock No. 172-8777
Mfr. Part No.CIM21U102NE
£0.015
Each (On a Reel of 10000)
Units
0805 (2012M) - 1000Ω - - - 500mA Chip Bead 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - EMI Suppression
RS Stock No. 795-7928
Mfr. Part No.CIM10U471NC
£0.005
Each (On a Reel of 4000)
Units
0603 (1608M) - 470Ω - - - 300mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 172-8767
Mfr. Part No.CIM10U471NC
£0.014
Each (On a Reel of 10000)
Units
0603 (1608M) - 470Ω - - - 300mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 795-7931
Mfr. Part No.CIM10U800NC
£0.011
Each (On a Reel of 4000)
Units
0603 (1608M) - 80Ω - - - 600mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression
RS Stock No. 795-7641
Mfr. Part No.CIC10P121NC
£0.006
Each (On a Reel of 4000)
Units
0603 (1608M) - 120Ω - - - 2A Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current
RS Stock No. 172-8768
Mfr. Part No.CIM10U800NC
£0.009
Each (On a Reel of 10000)
Units
0603 (1608M) - 80Ω - - - 600mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression