Ferrite Beads

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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

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RS庫存編號 619-7532
製造零件編號BLM18TG102TN1D
BrandMurata
TWD0.90
/個 (每包:250個)
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0603 (1608M) - 1000Ω - - - 100mA Chip Ferrite Bead 1.6 x 0.8 x 0.6mm 1.6mm 0.8mm 0.6mm - EMI Suppression Filter, General Use
RS庫存編號 358-6822
製造零件編號742792041
TWD6.80
/個 (每包:10個)
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0805 (2012M) - 600Ω - - - 200mA - 2 x 1.2 x 0.9mm 2mm 1.24mm 0.9mm - General Electronics
RS庫存編號 724-1334
製造零件編號BLM18GG471SN1D
BrandMurata
TWD5.00
/個 (每包:25個)
單位
0603 (1608M) - 470Ω - - 1800Ω 200mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, High-GHz Band General Use
RS庫存編號 144-9845
製造零件編號742792031
TWD5.70
個 (在毎卷:4000)
單位
0805 - 300Ω - - - 3A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS庫存編號 724-1378
製造零件編號BLM18HG601SN1D
BrandMurata
TWD2.80
/個 (每包:25個)
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0603 (1608M) - 600Ω - - 700Ω 200mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, GHz Band General Use
RS庫存編號 144-9819
製造零件編號742792041
TWD5.20
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0805 - 600Ω - - - 200mA EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.24mm 0.9mm - General Electronics
RS庫存編號 669-4092
製造零件編號742792031
TWD7.50
/個 (每包:10個)
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0805 (2012M) - 300Ω - - - 3A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS庫存編號 888-3342
製造零件編號28A0807-0A2
TWD60.00
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0807 160Ω 348Ω 514Ω - - - Snap-On EMI Core, Split EMI Core 24.82 x 55.91mm 55.91mm - 24.82mm 24.82mm EMI Suppression
RS庫存編號 109-4150
製造零件編號MPZ1608B471AT
BrandTDK
TWD0.90
個 (在毎卷:4000)
單位
0603 (1608M) - 470Ω - - - 1A Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Power Line
RS庫存編號 167-3811
製造零件編號BLM15EG121SN1D
BrandMurata
TWD2.00
個 (在毎卷:10000)
單位
0402 (1005M) - 120Ω - - 145Ω 1.5A Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - Power Lines; Signal Lines
RS庫存編號 166-9850
製造零件編號BLM18GG471SN1D
BrandMurata
TWD2.40
個 (在毎卷:4000)
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0603 (1608M) - 470Ω - - 1800Ω 200mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, High-GHz Band General Use
RS庫存編號 724-1299
製造零件編號BLM18AG601SN1D
BrandMurata
TWD2.10
/個 (每包:25個)
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0603 (1608M) - 600Ω - - - 500mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, General Use
RS庫存編號 167-4993
製造零件編號BLM21PG331SH1D
BrandMurata
TWD1.40
個 (在毎卷:4000)
單位
0805 (2012M) - 330Ω - - - 1.5A Chip Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - EMI Suppression Filter, Power Supplies
RS庫存編號 888-3531
製造零件編號35F0121-1SR-10
TWD9.00
/個 (每包:100個)
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3812 (9630M) - 82Ω - - 90Ω 10A Chip Bead 3.05 x 2.54 x 8.51mm 3.05mm 2.54mm 8.51mm - Automotive, DSC, Energy and Utilities, General Electronics, Laptop, LCD-TV, Networking Devices, PC, Portable Devices etc., Security
RS庫存編號 162-0099
製造零件編號BMB2A1000BN3
TWD3.20
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0805 (2012M) - 1000Ω - - - 200mA Chip Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Frequency
RS庫存編號 604-2246
製造零件編號MPZ2012S601AT
BrandTDK
TWD3.20
/個 (每包:10個)
單位
0805 - - - - - - Chip Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - Power Line
RS庫存編號 888-3550
製造零件編號HFA150066-0A2
TWD96.20
/個 (每包:10個)
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150066 - - 274Ω 350Ω 256Ω - Snap-On EMI Core, Split EMI Core 18.15 x 32.5 x 18.9mm 18.15mm 32.5mm 18.9mm - EMI Suppression
RS庫存編號 166-9855
製造零件編號BLM18HG601SN1D
BrandMurata
TWD1.60
個 (在毎卷:4000)
單位
0603 (1608M) - 600Ω - - 700Ω 200mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, GHz Band General Use
RS庫存編號 144-9802
製造零件編號742792042
TWD5.30
個 (在毎卷:4000)
單位
0805 - 600Ω - - - 200mA Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Anti EMI, Control Signals, DC/DC Converter, Fast Bus Signals, HDD, High Current, High Frequency, High Speed, Line Filter, LVDS, Power Supply, RS232, RS422, USB 2.0
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BrandMurata
TWD3.40
/個 (每包:25個)
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0603 (1608M) - 1000Ω - - 1700Ω 50mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, GHz Band High-Speed Signal Line