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

    1806 Products showing for Ferrite Beads

    TE Connectivity
    1204
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    Murata
    0603 (1608M)
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    120Ω
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    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    500mΩ
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    Wurth Elektronik
    Axial
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    -
    -
    -
    -
    -
    -
    EMI Suppression
    3.8 x 1.58 x 13.97mm
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    -
    -
    -
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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
    -
    Wurth Elektronik
    1206 (3216M)
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    600Ω
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    -
    -
    500mA
    EMI Suppression
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    300mΩ
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    Wurth Elektronik
    -
    -
    -
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    TDK
    0603 (1608M)
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    470Ω
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    -
    -
    1A
    Chip Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    0.150Ω
    -
    Wurth Elektronik
    Axial
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    -
    -
    -
    -
    -
    -
    EMI Suppression
    6.35 x 3.18 x 15.88mm
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    -
    -
    -
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    Murata
    0603 (1608M)
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    -
    60Ω
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    -
    -
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    100mΩ
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    Murata
    0603 (1608M)
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    -
    330Ω
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    -
    -
    1.7A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    800mΩ
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    Fair-Rite
    Axial
    88Ω
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    133Ω
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    Bead
    3.5 (Dia.) x 8.9mm
    8.9mm
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    3.5mm
    Bourns
    0402
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    -
    -
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    Murata
    0402 (1005M)
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    -
    220Ω
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    -
    -
    200mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    800mΩ
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    Wurth Elektronik
    0805 (2012M)
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    22Ω
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    -
    -
    6A
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    8mΩ
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    KEMET
    Tape & Reel
    610.4Ω
    1009.3Ω
    1300Ω
    995.2Ω
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    317Ω
    3A
    Chip Bead
    0.177 x 0.126 x 0.126mm
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    Murata
    1206
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    Chip Ferrite Bead
    3.2 x 1.6 x 1.6mm
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    Murata
    0402 (1005M)
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    30Ω
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    -
    2.2A
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    35mΩ
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    Wurth Elektronik
    -
    -
    -
    -
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    -
    -
    -
    -
    -
    -
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    Murata
    0603 (1608M)
    -
    -
    220Ω
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    -
    -
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    250mΩ
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    Wurth Elektronik
    0603 (1608M)
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    -
    470Ω
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    -
    600Ω
    500mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    320mΩ
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