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

    1868 Producten voor Ferrite Beads

    Murata
    0402 (1005M)
    -
    -
    600Ω
    -
    -
    -
    300mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    650mΩ
    -
    Murata
    1206 (3216M)
    -
    -
    33Ω
    -
    -
    -
    6A
    Chip Ferrite Bead
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    9mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    300Ω
    -
    -
    -
    2A
    Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    150mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    600Ω
    -
    -
    -
    300mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    650mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    30Ω
    -
    -
    -
    4A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    14mΩ
    -
    Murata
    0201 (0603M)
    -
    -
    600Ω
    -
    -
    -
    250mA
    Chip Ferrite Bead
    0.6 x 0.3 x 0.3mm
    0.6mm
    0.3mm
    0.3mm
    0.85Ω
    -
    Wurth Elektronik
    1206 (3216M)
    -
    -
    600Ω
    -
    -
    -
    2.5A
    Ferrite Bead
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.1mm
    1.6mm
    50mΩ
    -
    Murata
    0804 (2010M)
    -
    -
    1000Ω
    -
    -
    -
    50mA
    Chip Ferrite Bead
    2 x 1 x 0.5mm
    2mm
    1mm
    0.5mm
    -
    Laird
    0593
    186Ω
    -
    407Ω
    575Ω
    -
    -
    -
    Snap-On EMI Core, Split EMI Core
    18.75 x 52.91mm
    52.91mm
    -
    18.75mm
    -
    18.75mm
    Murata
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    700mA
    Chip Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    0.25Ω
    -
    Wurth Elektronik
    Axial
    -
    -
    -
    -
    -
    -
    -
    EMI Suppression
    4 x 2 x 10mm
    -
    -
    -
    -
    -
    Fair-Rite
    Axial
    65Ω
    -
    100Ω
    -
    -
    -
    -
    Bead
    3.5 (Dia.) x 6.7mm
    6.7mm
    -
    -
    -
    3.5mm
    Murata
    0805 (2012M)
    -
    -
    120Ω
    -
    -
    -
    600mA
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    190mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    1.4A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    100mΩ
    -
    Laird
    0434
    111Ω
    -
    277Ω
    449Ω
    -
    -
    -
    Snap-On EMI Core, Split EMI Core
    14.71 x 43mm
    43mm
    -
    14.7mm
    -
    14.71mm
    Wurth Elektronik
    Axial
    320Ω
    -
    512Ω
    -
    -
    -
    3A
    Ferrite Bead
    6 (Dia.) x 10mm
    10mm
    -
    -
    20mΩ
    6mm
    Wurth Elektronik
    0603
    -
    -
    220Ω
    -
    -
    -
    500mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    300mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    600Ω
    -
    -
    -
    200mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    0.65Ω
    -
    Murata
    0603 (1608M)
    -
    -
    100Ω
    -
    -
    140Ω
    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.5mm
    1.6mm
    0.8mm
    0.5mm
    45mΩ
    -
    Murata
    1206
    -
    -
    -
    -
    -
    -
    -
    Chip Ferrite Bead
    3.2 x 1.6 x 1.6mm
    -
    -
    -
    -
    -
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