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

"

...
顯示內容 隱藏內容

篩選條件

正在檢視 61 - 80,共 1105 項產品
Results per page
Description 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庫存編號 166-9690
製造零件編號BL03RN2R1M1B
BrandMurata
HK$0.699
個 (以毎袋:1000)
單位
Radial - - - - - 6A EMI Suppression 8.3 x 2.3 x 6.5mm 8.3mm 2.3mm 6.5mm - -
RS庫存編號 124-1521
製造零件編號74275043
HK$2.841
/個 (每包:20個)
單位
Radial 920Ω 961Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm 10mm - 10mm 6mm General Electronics
RS庫存編號 109-4151
製造零件編號MPZ1608S221AT
BrandTDK
HK$0.271
個 (在毎卷:4000)
單位
0603 (1608M) - - - - - - - 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS庫存編號 811-9770
製造零件編號BLM18BB100SN1D
BrandMurata
HK$0.458
個 (以毎袋:25)
單位
0603 (1608M) - 10Ω - - - 700mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, High Speed Signal Lines
RS庫存編號 839-0819
製造零件編號BLM18KG300TN1D
BrandMurata
HK$0.284
個 (以毎袋:100)
單位
0603 (1608M) - 30Ω - - - 5A Chip Ferrite Bead 1.6 x 0.8 x 0.6mm 1.6mm 0.8mm 0.6mm - EMI Suppression Filter, Power Supplies (Low DC Resistance Type)
RS庫存編號 172-9951
製造零件編號2743001112
BrandFair-Rite
HK$0.655
個 (在毎卷:4500)
單位
Axial 61Ω - - - - - Bead 3.5 (Dia.) x 4.45mm 4.45mm - - 3.5mm EMI Suppression
RS庫存編號 724-1536
製造零件編號BLM21PG300SN1D
BrandMurata
HK$0.488
/個 (每包:25個)
單位
0805 (2012M) - 30Ω - - - 3A 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 164-5841
製造零件編號4-1624117-5
HK$0.335
個 (在毎卷:4000)
單位
0805 (2012M) - 2000Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS庫存編號 166-9865
製造零件編號BLM21BB121SN1D
BrandMurata
HK$0.314
個 (在毎卷:4000)
單位
0805 (2012M) - 120Ω - - - 600mA Chip Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - EMI Suppression Filter, High Speed Signal Lines
RS庫存編號 788-0061
製造零件編號7427927161
HK$1.368
個 (以毎袋:10)
單位
0402 (1005M) - 600Ω - - - 250mA EMI Suppression 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - Suppression Components
RS庫存編號 164-5842
製造零件編號4-1624117-6
HK$0.333
個 (在毎卷:4000)
單位
0805 (2012M) - 2700Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - -
RS庫存編號 144-9845
製造零件編號742792031
HK$0.805
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 172-9962
製造零件編號2743037447
BrandFair-Rite
HK$1.437
個 (在毎卷:2800)
單位
SMD 56Ω 95Ω - - - - Bead 9.25 x 4.6 x 2.7mm 9.25mm 4.6mm 2.7mm - EMI Suppression
RS庫存編號 181-1377
製造零件編號BLM21SP111SZ1D
BrandMurata
HK$1.143
個 (在毎卷:250)
單位
2012 - 110Ω - - - 5A Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - -
RS庫存編號 788-0131
製造零件編號742863147
HK$1.936
個 (以毎袋:10)
單位
0603 (1608M) - 470Ω - - - 500mA EMI Suppression 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Highspeed Bus Systems, Suppression Components
RS庫存編號 888-3210
製造零件編號LI1806C151R-10
HK$0.587
/個 (每包:20000個)
單位
1806 (4516M) 60Ω 150Ω - - 222Ω 300mA Chip Bead 4.5 x 1.6 x 1.6mm 4.5mm 1.6mm 1.6mm - Automotive, DSC, Energy and Utilities, General Electronics, Laptop, LCD-TV, Networking Devices, PC, Portable Devices etc., Security
RS庫存編號 163-7379
製造零件編號74279220321
HK$1.782
個 (在毎卷:4000)
單位
0805 (2012M) - 320Ω - - - 2.5A Ferrite Bead 2 x 1.2 x 0.9mm 2mm 0.9mm 1.2mm - DC/DC Converter, High Current, Power Supply
RS庫存編號 724-1551
製造零件編號BLM21RK102SN1D
BrandMurata
HK$0.699
/個 (每包:25個)
單位
0805 (2012M) - 1000Ω - - - 200mA Chip Ferrite Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - Digital Interface, EMI Suppression Filter
RS庫存編號 788-0052
製造零件編號7427927160
HK$1.47
個 (以毎袋:10)
單位
0402 (1005M) - 60Ω - - - 400mA EMI Suppression 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - Suppression Components
RS庫存編號 318-2616
製造零件編號BLM18BB220SN1D
BrandMurata
HK$0.423
/個 (每包:25個)
單位
0603 - 22Ω - - - 700mA Chip Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression Filter, High Speed Signal Lines