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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제품설명 단가 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 제품 번호 144-9785
제조사 부품 번호742792651
제조사Wurth Elektronik
₩187.55
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603 - 600Ω - - - 1A Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - 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 제품 번호 124-1835
제조사 부품 번호742792651
제조사Wurth Elektronik
₩241.80
Each (In a Pack of 50)
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0603 (1608M) - 600Ω - - - 1A Ferrite Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - 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 제품 번호 724-1425
제조사 부품 번호BLM18PG471SN1D
제조사Murata
₩69.75
Each (In a Pack of 25)
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RS 제품 번호 125-3150
제조사 부품 번호BLM18PG471SN1D
제조사Murata
₩29.45
Each (On a Reel of 4000)
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0603 (1608M) - 470Ω - - - 1A Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - EMI Suppression, Power Supplies
RS 제품 번호 124-1839
제조사 부품 번호742792040
제조사Wurth Elektronik
₩292.95
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0805 (2012M) - 600Ω - - - 2A 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 제품 번호 741-3191
제조사 부품 번호MPZ2012S331AT
제조사TDK
₩62.00
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RS 제품 번호 741-3129
제조사 부품 번호MMZ1608R102AT
제조사TDK
₩43.40
Each (In a Bag of 100)
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0603 (1608M) - - - - - - Chip Bead 1.6 x 0.8 x 0.8mm 1.6mm 0.8mm 0.8mm - Signal Line
RS 제품 번호 166-9560
제조사 부품 번호BLM15HG102SN1D
제조사Murata
₩69.75
Each (On a Reel of 10000)
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0402 (1005M) - 1000Ω - - - 250mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, GHz Band General Use
RS 제품 번호 144-9788
제조사 부품 번호742792040
제조사Wurth Elektronik
₩218.55
Each (On a Reel of 4000)
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RS 제품 번호 163-4003
제조사 부품 번호74279226101
제조사Wurth Elektronik
₩717.65
Each (On a Reel of 2500)
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1812 (4532M) - 100Ω - - - 8A Bead 4.5 x 3.2 x 2.3mm 4.5mm 3.2mm 2.3mm - EMI Suppression, High Current
RS 제품 번호 749-8328
제조사 부품 번호74279226101
제조사Wurth Elektronik
₩891.25
Each (In a Bag of 5)
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RS 제품 번호 724-1286
제조사 부품 번호BLM15HG102SN1D
제조사Murata
₩147.25
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0402 (1005M) - 1000Ω - - - 250mA Chip Ferrite Bead 1 x 0.5 x 0.5mm 1mm 0.5mm 0.5mm - EMI Suppression Filter, GHz Band General Use
RS 제품 번호 166-9836
제조사 부품 번호BLM15BD471SN1D
제조사Murata
₩27.90
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RS 제품 번호 167-4992
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제조사Murata
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제조사 부품 번호BLM41PG471SN1L
제조사Murata
₩145.70
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제조사 부품 번호BLM18EG121SN1D
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RS 제품 번호 467-3365
제조사 부품 번호2743021447
제조사Fair-Rite
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RS 제품 번호 749-8299
제조사 부품 번호74279224101
제조사Wurth Elektronik
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RS 제품 번호 888-3361
제조사 부품 번호28A2029-0A2
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