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

    Wurth Elektronik
    1206 (3216M)
    -
    -
    600Ω
    -
    -
    -
    2A
    Ferrite Bead
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    0.1Ω
    -
    TE Connectivity
    0805
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Murata
    1206 (3216M)
    -
    -
    120Ω
    -
    -
    -
    3.5A
    Chip Ferrite Bead
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    20mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    330Ω
    -
    -
    -
    1.2A
    Chip Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    165mΩ
    -
    Murata
    0201
    111Ω
    185Ω
    247Ω
    378Ω
    -
    384Ω
    -
    Chip Ferrite Bead
    0.6 x 0.3 x 0.4mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    2220 (5650M)
    -
    -
    270Ω
    350Ω
    -
    -
    4A
    Bead
    5.59 x 5.08 x 3.2mm
    5.59mm
    5.08mm
    3.2mm
    20mΩ
    -
    Murata
    1206 (3216M)
    -
    -
    390Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    0.05Ω
    -
    Murata
    0402 (1005M)
    -
    -
    1800Ω
    -
    -
    2700Ω
    200mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    2.2Ω
    -
    KEMET
    Tape & Reel
    421.7Ω
    715.7Ω
    1000Ω
    1355Ω
    -
    1200Ω
    800mA
    Chip Bead
    0.063 x 0.031 x 0.031mm
    -
    -
    -
    -
    -
    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
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Bourns
    1806
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    80Ω
    -
    -
    -
    4A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    0.9mm
    1.2mm
    18mΩ
    -
    Murata
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Murata
    0603
    33Ω
    47.5Ω
    70Ω
    74.5Ω
    -
    73.6Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.6mm
    -
    -
    -
    -
    -
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    600Ω
    200mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    850mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    22Ω
    -
    -
    40Ω
    1A
    Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    50mΩ
    -
    Murata
    0805
    18.6Ω
    25.9Ω
    30Ω
    41.5Ω
    -
    41.9Ω
    -
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    -
    -
    -
    -
    -
    Murata
    0402 (1005M)
    -
    -
    600Ω
    -
    -
    -
    300mA
    Chip Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    0.6Ω
    -
    Murata
    0402 (1005M)
    -
    -
    10Ω
    -
    -
    -
    1A
    Chip Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    0.05Ω
    -
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