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

DVDs

Gaming Systems

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รายละเอียดสินค้า / Description ราคา / Price Package Type Impedance at 25 MHz Impedance at 100 MHz Impedance at 300 MHz Impedance at 500 MHz Impedance at 1 GHz Current Rating Type Dimensions Length Depth Height Diameter Application
RS Stock No. 124-1521
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74275043
THB14.856
Each: (In a Pack of 20)
Units
Radial 920Ω 961Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm 10mm - 10mm 6mm General Electronics
RS Stock No. 124-1519
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427501
THB13.74
Each: (In a Pack of 20)
Units
Axial 598Ω 800Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm - - 10mm 6mm Digital Devices, PCB, Radio Frequency Interferences, Text Processing
RS Stock No. 787-9995
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792625
THB5.407
Each (In a Bag of 10)
Units
0603 (1608M) - 120Ω - - - 2A EMI Suppression 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Suppression Components
RS Stock No. 144-9870
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792625
THB4.028
Each (On a Reel of 4000)
Units
0603 - 120Ω - - - 2A EMI Suppression 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Suppression Components
RS Stock No. 163-3215
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427503
THB11.353
Each (In a Bag of 200)
Units
Axial - 600Ω - - - 200mA - 6 (Dia.) x 10mm 10mm - - 6mm General Electronics
RS Stock No. 144-9845
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792031
THB5.15
Each (On a Reel of 4000)
Units
0805 - 300Ω - - - 3A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 669-4092
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792031
THB6.703
Each: (In a Pack of 10)
Units
0805 (2012M) - 300Ω - - - 3A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 749-8296
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74279223560
THB15.896
Each (In a Bag of 5)
Units
1612 (4131M) - 56Ω - - - 10A Bead 4.06 x 3.05 x 2.28mm 4.06mm 3.05mm 2.28mm - EMI Suppression, High Current
RS Stock No. 144-9865
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792095
THB4.935
Each (On a Reel of 4000)
Units
0805 - 2700Ω - - - 200mA EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 124-1518
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427504
THB22.566
Each: (In a Pack of 20)
Units
Axial 702Ω 773Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm - - 10mm 6mm Digital Devices, PCB, Radio Frequency Interferences, Text Processing
RS Stock No. 124-1517
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427502
THB39.886
Each: (In a Pack of 20)
Units
Axial 670Ω 976Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm 10mm - 10mm 6mm General Electronics
RS Stock No. 787-9951
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792095
THB6.206
Each (In a Bag of 10)
Units
0805 (2012M) - 2700Ω - - - 200mA EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 260-6830
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427503
THB14.84
Each
Units
Axial - 600Ω - - - 200mA Bead 6 (Dia.) x 10mm 10mm - - 6mm General Electronics
RS Stock No. 144-9844
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792021
THB5.15
Each (On a Reel of 4000)
Units
0805 - 22Ω - - - 6A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 260-6874
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74279204
THB6.233
Each: (In a Pack of 10)
Units
0805 (2012M) - - - - - - - 2 x 1.25 x 0.9mm 2mm 1.25mm 0.9mm - General Electronics
RS Stock No. 788-0030
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427927115
THB5.361
Each (In a Bag of 10)
Units
0402 (1005M) - 150Ω - - - 100mA EMI Suppression 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - Suppression Components
RS Stock No. 163-4563
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742792094
THB4.714
Each (On a Reel of 4000)
Units
0805 (2012M) - 2200Ω - - - 200mA EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS Stock No. 749-8316
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.74279224551
THB41.28
Each (In a Bag of 5)
Units
2220 (5650M) - 550Ω - - - 4A Bead 5.59 x 5.08 x 1.97mm 5.59mm 5.08mm 1.97mm - EMI Suppression, High Current
RS Stock No. 124-1843
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.742861210
THB6.792
Each: (In a Pack of 20)
Units
0603 (1608M) - 1000Ω - - 1100Ω 50mA Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - CPU, HDD, High Frequency, High Speed Bus Systems
RS Stock No. 788-0092
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7427927311
THB5.27
Each (In a Bag of 10)
Units
0402 (1005M) - 120Ω - - - 1.2mA EMI Suppression 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - Suppression Components