Ferrite Beads | Murata Chip Ferrite Chokes | RS
Login / Register to access your benefits
Recently searched

    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

    1862 Products showing for Ferrite Beads

    Wurth Elektronik
    1812 (4532M)
    -
    -
    680Ω
    -
    -
    -
    4A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    35mΩ
    -
    KEMET
    Tape & Reel
    610.4Ω
    1009.3Ω
    1300Ω
    995.2Ω
    -
    317Ω
    3A
    Chip Bead
    0.177 x 0.126 x 0.126mm
    -
    -
    -
    -
    -
    Murata
    1806 (4516M)
    -
    -
    1000Ω
    -
    -
    -
    1.5A
    Chip Bead
    4.5 x 1.6 x 1.6mm
    4.5mm
    1.6mm
    1.6mm
    0.09Ω
    -
    KEMET
    Tape & Reel
    329Ω
    521.3Ω
    680Ω
    746.8Ω
    -
    290Ω
    4A
    Chip Bead
    0.177 x 0.126 x 0.126mm
    -
    -
    -
    -
    -
    KEMET
    Tape & Reel
    610.4Ω
    1009.3Ω
    1300Ω
    995.2Ω
    -
    317Ω
    3A
    Chip Bead
    0.177 x 0.126 x 0.126mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    1812 (4532M)
    -
    -
    680Ω
    -
    -
    -
    4A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    35mΩ
    -
    Laird
    2025
    130Ω
    -
    320Ω
    510Ω
    -
    -
    -
    Cylindrical EMI Core
    18.15 x 32.5 x 18.9mm
    18.15mm
    32.5mm
    18.9mm
    -
    -
    FERROXCUBE
    Axial
    -
    -
    -
    -
    -
    -
    -
    Bead
    6 (Dia.) x 10mm
    -
    -
    10mm
    -
    6mm
    KEMET
    Tape & Reel
    329Ω
    521.3Ω
    680Ω
    746.8Ω
    -
    290Ω
    4A
    Chip Bead
    0.177 x 0.126 x 0.126mm
    -
    -
    -
    -
    -
    Laird
    Axial
    538Ω
    -
    835Ω
    -
    480Ω
    220Ω
    5A
    Ferrite Bead on Wire
    6 (Dia.) x 10mm
    10mm
    -
    10mm
    10mΩ
    6mm
    KEMET
    Tape & Reel
    503.4Ω
    793.9Ω
    1000Ω
    965.7Ω
    -
    377.1Ω
    2A
    Chip Bead
    0.126 x 0.098 x 0.098mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    1812 (4532M)
    -
    -
    600Ω
    -
    -
    -
    3A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    40mΩ
    -
    Murata
    0805 (2012M)
    -
    -
    2700Ω
    -
    -
    -
    200mA
    Chip Ferrite Bead
    2 x 1.25 x 1.25mm
    2mm
    1.25mm
    1.25mm
    800mΩ
    -
    KEMET
    Tape & Reel
    236Ω
    411Ω
    600Ω
    873.8Ω
    -
    900Ω
    2.7A
    Chip Bead
    0.063 x 0.031 x 0.031mm
    -
    -
    -
    -
    -
    Wurth Elektronik
    1812 (4532M)
    -
    -
    600Ω
    -
    -
    -
    3A
    EMI Suppression
    4.5 x 3.2 x 1.5mm
    4.5mm
    3.2mm
    1.5mm
    40mΩ
    -
    KEMET
    Tape & Reel
    236Ω
    411Ω
    600Ω
    873.8Ω
    -
    900Ω
    2.7A
    Chip Bead
    0.063 x 0.031 x 0.031mm
    -
    -
    -
    -
    -
    Murata
    0603 (1608M)
    -
    -
    220Ω
    -
    -
    -
    500mA
    Chip Ferrite Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    250mΩ
    -
    Murata
    Radial
    -
    -
    -
    -
    -
    -
    6A
    EMI Suppression
    9 x 3.4 x 7.5mm
    9mm
    3.4mm
    7.5mm
    -
    -
    Wurth Elektronik
    0805 (2012M)
    -
    -
    300Ω
    -
    -
    -
    3A
    EMI Suppression
    2 x 1.2 x 0.9mm
    2mm
    1.2mm
    0.9mm
    50mΩ
    -
    TDK
    0603 (1608M)
    -
    -
    1000Ω
    -
    -
    -
    400mA
    Chip Bead
    1.6 x 0.8 x 0.8mm
    1.6mm
    0.8mm
    0.8mm
    0.50Ω
    -
    Results per page