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

"

...
顯示內容 隱藏內容

篩選條件

正在檢視 141 - 160,共 991 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 104-8541
製造零件編號BLM21BD601SH1D
BrandMurata
HK$0.935
/個 (每包:50個)
單位
0805 (2012M) - 600Ω - - - 300mA Chip Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - Automotive, Powertrain, Safety
RS庫存編號 792-6259
製造零件編號BLM18HE152SN1D
BrandMurata
HK$1.004
個 (以毎袋:25)
單位
0603 (1608M) - 1500Ω - - - 500mA 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
RS庫存編號 724-1309
製造零件編號BLM18BB121SN1D
BrandMurata
HK$0.539
/個 (每包:25個)
單位
0603 (1608M) - 120Ω - - - 550mA 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 863-7341
製造零件編號5-1624117-8
HK$1.015
個 (以毎袋:100)
單位
0805 (2012M) - 10Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - High Current, Noise Filtering
RS庫存編號 741-3197
製造零件編號MPZ1608Y151BT
BrandTDK
HK$0.463
個 (以毎袋:100)
單位
0603 (1608M) - - - - - - - 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - -
RS庫存編號 144-9863
製造零件編號742792037
HK$1.38
個 (在毎卷:4000)
單位
0805 - 330Ω - - - 2A EMI Suppression 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - Suppression Components
RS庫存編號 144-9851
製造零件編號74279252
HK$2.346
個 (在毎卷:1000)
單位
1812 - 880Ω - - - 4A EMI Suppression 4.5 x 3.2 x 1.5mm 4.5mm 3.2mm 1.5mm - Suppression Components
RS庫存編號 169-2760
製造零件編號BLM18EG601SH1D
BrandMurata
HK$0.638
個 (在毎卷:4000)
單位
0603 (1608M) - 600Ω - - 700Ω 500mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Automotive
RS庫存編號 162-1665
製造零件編號BMB2A0120AN4
HK$0.296
個 (在毎卷:4000)
單位
0805 (2012M) - 120Ω - - - - Ferrite Bead 2 x 1.2 x 0.9mm 2mm 1.2mm 0.9mm - EMI Filtering, General Electronics
RS庫存編號 110-100
製造零件編號BLM15HB221SN1D
BrandMurata
HK$0.943
個 (以毎袋:25)
單位
0402 (1005M) - 22Ω - - - 250mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, GHz Band High-speed Signal Lines
RS庫存編號 144-9796
製造零件編號74279207
HK$1.281
個 (在毎卷:4000)
單位
805 - 100Ω - - - 1A 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
RS庫存編號 104-8529
製造零件編號BLM18AG471SH1D
BrandMurata
HK$0.369
/個 (每包:200個)
單位
0603 (1608M) - 470Ω - - - 550mA Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Automotive, Powertrain, Safety
RS庫存編號 110-267
製造零件編號BLM15BD102SN1D
BrandMurata
HK$0.45
個 (以毎袋:25)
單位
0402 (1005M) - 1000Ω - - - 200mA Chip Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - General Electronics
RS庫存編號 167-4989
製造零件編號BLM18AG102SH1D
BrandMurata
HK$0.225
個 (在毎卷:4000)
單位
0603 (1608M) - 1000Ω - - - 450mA 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 863-0895
製造零件編號74279228600
HK$2.811
個 (以毎袋:10)
單位
0603 (1608M) - 60Ω - - - 5.1A Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - DC/DC Converter, High Current, Power Supply
RS庫存編號 122-5329
製造零件編號BLM21BD471SN1D
BrandMurata
HK$0.333
個 (在毎卷:4000)
單位
0805 (2012M) - 470Ω - - - 300mA Chip Bead 2 x 1.25 x 0.85mm 2mm 1.25mm 0.85mm - General Electronics
RS庫存編號 124-1517
製造零件編號7427502
HK$4.725
/個 (每包:20個)
單位
Axial 670Ω 976Ω - - - 3A Ferrite Bead 6 (Dia.) x 10mm 10mm - 10mm 6mm General Electronics
RS庫存編號 888-3531
製造零件編號35F0121-1SR-10
HK$2.373
/個 (每包:100個)
單位
3812 (9630M) - 82Ω - - 90Ω 10A 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 163-4001
製造零件編號74279224551
HK$9.251
個 (在毎卷:2000)
單位
2220 (5650M) - 550Ω - - - 4A Bead 5.59 x 5.08 x 1.97mm 5.59mm 5.08mm 1.97mm - EMI Suppression, High Current
RS庫存編號 144-9845
製造零件編號742792031
HK$1.512
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