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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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. 164-5827
Mfr. Part No.4-1624116-4
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS stock no. 863-7265
Mfr. Part No.4-1624117-8
R 1.156
Each (In a Bag of 100)
units
0805 (2012M) - 30Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - General Purpose, High frequency
RS stock no. 164-5865
Mfr. Part No.5-1624116-5
R 0.838
Each (On a Reel of 4000)
units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS stock no. 164-5829
Mfr. Part No.4-1624116-5
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS stock no. 863-7170
Mfr. Part No.3-1624117-4
R 0.743
Each (In a Bag of 100)
units
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - General Purpose, High frequency
RS stock no. 164-5877
Mfr. Part No.5-1624117-7
R 1.354
Each (On a Reel of 4000)
units
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS stock no. 164-5315
Mfr. Part No.BMB2A0600BN3
R 3,384.86
1 Reel of 4000
Reel(s)
0805 (2012M) - - - - - - Chip Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Frequency
RS stock no. 164-5694
Mfr. Part No.1879855-2
R 6,898.53
1 Reel of 10000
Reel(s)
0402 (1005M) - 30Ω - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - -
RS stock no. 863-7114
Mfr. Part No.1879855-9
R 0.781
Each (In a Bag of 100)
units
0402 (1005M) - 1000Ω - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - General Purpose, High frequency
RS stock no. 164-5800
Mfr. Part No.3-1624116-8
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - 1200Ω - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS stock no. 863-7259
Mfr. Part No.4-1624116-5
R 1.162
Each (In a Bag of 100)
units
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - General Purpose, High frequency
RS stock no. 164-5313
Mfr. Part No.BMB2A0300LN2
R 2,978.95
1 Reel of 4000
Reel(s)
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Signal Line, Telecom
RS stock no. 164-5831
Mfr. Part No.4-1624116-7
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - High Current, Noise Filtering
RS stock no. 164-5879
Mfr. Part No.5-1624117-8
R 0.994
Each (On a Reel of 4000)
units
0805 (2012M) - 10Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS stock no. 164-5839
Mfr. Part No.4-1624117-4
R 1,994.40
1 Reel of 4000
Reel(s)
0805 (2012M) - - - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS stock no. 164-5794
Mfr. Part No.3-1624116-3
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS stock no. 863-7307
Mfr. Part No.1-1879855-7
R 0.781
Each (In a Bag of 100)
units
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - High Current, Noise Filtering
RS stock no. 164-5695
Mfr. Part No.1879855-3
R 6,898.53
1 Reel of 10000
Reel(s)
0402 (1005M) - - - - - - Ferrite Bead 1 x 0.5 x 0.32mm 1mm 0.5mm 0.32mm - -
RS stock no. 812-0777
Mfr. Part No.BMB2A0120AN4
R 0.652
Each (In a Bag of 100)
units
0805 (2012M) - 120Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - EMI Filtering, General Electronics
RS stock no. 164-5801
Mfr. Part No.3-1624116-9
R 3,237.54
1 Reel of 4000
Reel(s)
0603 (1608M) - - - - - - Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -