Ferrite Beads | Murata Chip Ferrite Chokes | RS
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    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

    1825 Products showing for Ferrite Beads

    Bourns
    1812
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    Murata
    0603 (1608M)
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    120Ω
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    -
    -
    200mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    250mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    550Ω
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    210mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    47Ω
    -
    -
    -
    300mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    350mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    1500Ω
    -
    -
    -
    200mA
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    450mΩ
    -
    Murata
    0603
    160Ω
    231Ω
    330Ω
    383Ω
    -
    167Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    Murata
    0402
    77.7Ω
    155Ω
    220Ω
    312Ω
    -
    194Ω
    -
    Chip Ferrite Bead
    1.0 x 0.5 x 0.5mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    220Ω
    -
    -
    -
    2A
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    50mΩ
    -
    Murata
    1206 (3216M)
    -
    -
    120Ω
    -
    -
    -
    150mA
    Inductor Type
    3.2 x 1.6 x 0.8mm
    3.2mm
    1.6mm
    0.8mm
    0.20Ω
    -
    Wurth Elektronik
    0603
    -
    -
    750Ω
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    -
    -
    400mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    350mΩ
    -
    Murata
    0402
    108Ω
    206Ω
    330Ω
    440Ω
    -
    213Ω
    -
    Chip Ferrite Bead
    1.0 x 0.5 x 0.5mm
    -
    -
    -
    -
    -
    TE Connectivity
    0603
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    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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    KEMET
    Tape & Reel
    494.9Ω
    771.6Ω
    1000Ω
    1060.7Ω
    -
    407Ω
    3A
    Chip Bead
    0.177 x 0.098 x 0.098mm
    -
    -
    -
    -
    -
    Murata
    0603 (1608M)
    -
    -
    10Ω
    -
    -
    -
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    250mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    330Ω
    -
    -
    -
    200mA
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    250mΩ
    -
    Wurth Elektronik
    Axial
    -
    -
    -
    -
    -
    -
    -
    EMI Suppression
    4 x 2 x 5mm
    -
    -
    -
    -
    -
    Murata
    0603 (1608M)
    -
    -
    30Ω
    -
    -
    -
    5A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.6mm
    1.6mm
    0.8mm
    0.6mm
    10mΩ
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    220Ω
    -
    -
    -
    300mA
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    300mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    550Ω
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    210mΩ
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    Bourns
    0402
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