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

    Murata
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    450mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    450mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    500mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    300mΩ
    -
    Wurth Elektronik
    1812 (4532M)
    -
    -
    680Ω
    -
    -
    -
    4A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    35mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    22Ω
    -
    -
    -
    6A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    9mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    60Ω
    -
    -
    -
    5.1A
    Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    15mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    30Ω
    -
    -
    -
    4A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    14mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    500mA
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    300mΩ
    -
    Wurth Elektronik
    1206 (3216M)
    -
    -
    600Ω
    -
    -
    -
    2.5A
    EMI Suppression
    3.2 x 1.6 x 1.1mm
    3.2mm
    1.6mm
    1.1mm
    70mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    120Ω
    -
    -
    -
    550mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    190mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    1000Ω
    -
    -
    -
    400mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    500mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    220Ω
    -
    -
    -
    2A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    45mΩ
    -
    Murata
    603
    -
    -
    -
    -
    -
    -
    -
    Chip Ferrite Bead
    1.6 x 0.8mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    SMD
    58Ω
    -
    42Ω
    -
    -
    -
    6A
    High Current
    4 x 3 x 2.55mm
    4mm
    3mm
    2.55mm
    900mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    600Ω
    -
    -
    -
    300mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    650mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    1000Ω
    -
    -
    -
    300mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    650mΩ
    -
    Murata
    0402 (1005M)
    -
    -
    1000Ω
    -
    -
    -
    350mA
    Chip Ferrite Bead
    1 x 0.5 x 0.5mm
    1mm
    0.5mm
    0.5mm
    490mΩ
    -
    Wurth Elektronik
    0603 (1608M)
    -
    -
    60Ω
    -
    -
    -
    3A
    EMI Suppression
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    40mΩ
    -
    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)
    -
    -
    22Ω
    -
    -
    -
    6A
    Chip Ferrite Bead
    2 x 1.25 x 0.85mm
    2mm
    1.25mm
    0.85mm
    9mΩ
    -
    Murata
    0603 (1608M)
    -
    -
    470Ω
    -
    -
    -
    1A
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    200mΩ
    -
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