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

    2063 產品顯示為 Ferrite Beads

    • RS庫存編號 332-189
    • 製造零件編號 782853561
    个(每带 50 )
    HK$0.948
    Wurth Elektronik
    0805
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    Ferrite Bead
    1.2 x 0.9 x 2mm
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    • RS庫存編號 332-378
    • 製造零件編號 74269244182
    HK$0.919
    Wurth Elektronik
    0402
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    Ferrite Bead
    0.5 x 0.5 x 1mm
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    • RS庫存編號 332-566
    • 製造零件編號 782631131
    个(每带 50 )
    HK$0.239
    Wurth Elektronik
    0603
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    Ferrite Bead
    0.8 x 0.8 x 1.6mm
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    • RS庫存編號 332-601
    • 製造零件編號 78279221601
    个(每带 50 )
    HK$2.374
    Wurth Elektronik
    1206
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    Multilayer Chip Bead
    1.6 x 1.1 x 3.2mm
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    • RS庫存編號 245-5753P
    • 製造零件編號 BMC2AY0150AN
    个 (以每卷裝提供)
    HK$0.72
    TE Connectivity
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    • RS庫存編號 486-051
    • 製造零件編號 742792903
    HK$340.75
    Wurth Elektronik
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    • RS庫存編號 332-592
    • 製造零件編號 78279220321
    个(每带 50 )
    HK$2.135
    Wurth Elektronik
    0805
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    Multilayer Chip Bead
    1.2 x 0.9 x 2mm
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    • RS庫存編號 486-037P
    • 製造零件編號 742792716
    个 (以每卷裝提供)
    HK$10.515
    Wurth Elektronik
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    • RS庫存編號 332-384
    • 製造零件編號 74269241102
    HK$0.919
    Wurth Elektronik
    0402
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    Ferrite Bead
    0.5 x 0.5 x 1mm
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    • RS庫存編號 362-607
    • 製造零件編號 2506031217Y2
    个(每带 4000 )
    HK$0.302
    Fair-Rite
    0603
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    Ferrite Bead
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    • RS庫存編號 245-5790P
    • 製造零件編號 BMC2CY0100AN
    个 (以每卷裝提供)
    HK$0.83
    TE Connectivity
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    • RS庫存編號 245-5786P
    • 製造零件編號 BMC2CY0060AN
    个 (以每卷裝提供)
    HK$0.83
    TE Connectivity
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    • RS庫存編號 484-642P
    • 製造零件編號 744284102
    个 (以每卷裝提供)
    HK$331.11
    Wurth Elektronik
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    • RS庫存編號 332-195
    • 製造零件編號 782853611
    HK$0.631
    Wurth Elektronik
    0805
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    Ferrite Bead
    1.2 x 0.9 x 2mm
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    • RS庫存編號 332-569
    • 製造零件編號 782965601
    个(每带 50 )
    HK$5.224
    Wurth Elektronik
    1812
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    Ferrite Bead
    3.2 x 1.5 x 4.5mm
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    • RS庫存編號 332-505
    • 製造零件編號 782631331
    个(每带 50 )
    HK$0.239
    Wurth Elektronik
    0603
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    Ferrite Bead
    0.8 x 0.8 x 1.6mm
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    • RS庫存編號 332-533
    • 製造零件編號 782853301
    HK$0.631
    Wurth Elektronik
    0805
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    Ferrite Bead
    1.2 x 0.9 x 2mm
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    • RS庫存編號 484-639P
    • 製造零件編號 744282102
    个 (以每卷裝提供)
    HK$297.57
    Wurth Elektronik
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    • RS庫存編號 245-5684P
    • 製造零件編號 BMC1JY0031AN
    个 (以每卷裝提供)
    HK$0.36
    TE Connectivity
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    • RS庫存編號 332-222
    • 製造零件編號 782763820
    HK$1.55
    Wurth Elektronik
    1206
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    Ferrite Bead
    1.6 x 1.1 x 3.2mm
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