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

    1867 Products showing for Ferrite Beads

    Murata
    0805 (2012M)
    -
    -
    470Ω
    -
    -
    -
    200mA
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    250mΩ
    -
    TDK
    0603 (1608M)
    -
    -
    1000Ω
    -
    -
    -
    400mA
    Chip Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    0.50Ω
    -
    TDK
    0805 (2012M)
    -
    -
    1000Ω
    -
    -
    -
    500mA
    Chip Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    0.30Ω
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    22Ω
    -
    -
    40Ω
    1A
    Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    50mΩ
    -
    Wurth Elektronik
    1812 (4532M)
    -
    -
    600Ω
    -
    -
    -
    3A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    40mΩ
    -
    Murata
    0402
    45.5Ω
    90.3Ω
    120Ω
    176Ω
    -
    165Ω
    -
    Chip Ferrite Bead
    1.0 x 0.5 x 0.5mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    High Current
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Murata
    0603 (1608M)
    -
    -
    100Ω
    -
    -
    140Ω
    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.5mm
    1.6mm
    0.8mm
    0.5mm
    45mΩ
    -
    TDK
    0603 (1608M)
    -
    -
    600Ω
    -
    -
    -
    500mA
    Chip Bead
    1.6 x 0.8 x 0.6mm
    1.6mm
    0.8mm
    0.6mm
    0.40Ω
    -
    Murata
    0402 (1005M)
    -
    -
    1000Ω
    -
    -
    2000Ω
    250mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    1.25Ω
    -
    Murata
    0603 (1608M)
    -
    -
    47Ω
    -
    -
    -
    550mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    550mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    330Ω
    -
    -
    -
    1.7A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    800mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    120Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    50mΩ
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    1000Ω
    -
    -
    -
    1A
    Ferrite Bead
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    300mΩ
    -
    Murata
    0805
    550Ω
    778Ω
    1000Ω
    529Ω
    -
    165Ω
    -
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    -
    -
    -
    -
    -
    Murata
    0603
    647Ω
    876Ω
    1000Ω
    668Ω
    -
    202Ω
    -
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    0402 (1005M)
    -
    -
    600Ω
    -
    -
    -
    200mA
    EMI Suppression
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    -
    Murata
    0402
    152Ω
    287Ω
    470Ω
    569Ω
    -
    267Ω
    -
    Chip Ferrite Bead
    1.0 x 0.5 x 0.5mm
    -
    -
    -
    -
    -
    Bourns
    0402
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    KEMET
    Tape & Reel
    15.1Ω
    30Ω
    60Ω
    155.6Ω
    -
    220Ω
    4A
    Chip Bead
    0.063 x 0.031 x 0.031mm
    -
    -
    -
    -
    -
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