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

    1869 Producten voor Ferrite Beads

    KEMET
    Tape & Reel
    421.7Ω
    715.7Ω
    1000Ω
    1355Ω
    -
    1200Ω
    800mA
    Chip Bead
    0.063 x 0.031 x 0.031mm
    -
    -
    -
    -
    -
    Laird
    2025
    130Ω
    -
    320Ω
    510Ω
    -
    -
    -
    Snap-On EMI Core, Split EMI Core
    18.15 x 32.5 x 18.9mm
    18.15mm
    32.5mm
    18.9mm
    -
    -
    € 0,24
    Elk (op een tape van 10)
    Bourns
    1812
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Murata
    0805 (2012M)
    -
    -
    220Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    45mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    330Ω
    -
    -
    -
    1.5A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    70mΩ
    -
    Murata
    1206
    -
    -
    -
    -
    -
    -
    -
    Chip Ferrite Bead
    3.2 x 1.6 x 1.6mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    600Ω
    -
    -
    -
    2.1A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    0.9mm
    1.2mm
    80mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    1000Ω
    100mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    1.2Ω
    -
    TDK
    0805 (2012M)
    -
    -
    330Ω
    -
    -
    -
    2.5A
    Chip Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    0.050Ω
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    33Ω
    -
    -
    -
    4A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    8mΩ
    -
    Wurth Elektronik
    SMD
    425Ω
    -
    580Ω
    -
    -
    -
    5A
    Bead
    11 x 4.65 x 5mm
    11mm
    4.65mm
    5mm
    12mΩ
    -
    Laird
    5776
    115Ω
    -
    210Ω
    360Ω
    -
    -
    -
    Snap-On EMI Core, Split EMI Core
    29.2 x 42 x 42mm
    29.2mm
    42mm
    42mm
    -
    -
    Murata
    0603 (1608M)
    -
    -
    120Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    50mΩ
    -
    Laird
    5131
    187Ω
    -
    425Ω
    533Ω
    -
    -
    -
    Snap-On EMI Core, Split EMI Core
    56.63 x 45 x 56.64mm
    56.63mm
    45mm
    56.64mm
    -
    -
    € 0,211
    Elk (op een tape van 10)
    Wurth Elektronik
    0805
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Wurth Elektronik
    0603
    -
    -
    750Ω
    -
    -
    -
    400mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    350mΩ
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    600Ω
    -
    -
    -
    2A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    150mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    120Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    50mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    220Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    45mΩ
    -
    Murata
    1206
    -
    -
    -
    -
    -
    -
    -
    Chip Ferrite Bead
    3.2 x 1.6 x 1.6mm
    -
    -
    -
    -
    -
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