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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

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In Stock Murata Ferrite Bead 0.85 mm (Surface) (0805) (Chip Ferrite Bead), 1000 Ω impedance at 100 MHz RS stock no. 724-1469 Mfr. Part No. BLM21AG102SN1D Subtotal (25 units, in packs of 25) R 41,325(exc. VAT) R 1,653/unit Pack(s)	Murata	0805	Ferrite Bead	-	-	1000Ω	-	-	-	-	500mA	Surface	Chip Ferrite Bead	-	-	2mm	-55°C	-	1.25mm	125°C	0.85mm	280mΩ	REACH, RoHS	-
In Stock Murata Ferrite Bead 0.85 mm (Chip) (0805) (Chip Ferrite Bead), 30 Ω impedance at 100 MHz RS stock no. 724-1536P Mfr. Part No. BLM21PG300SN1D Subtotal (25 units, supplied on a continuous strip) R 30,625(exc. VAT) R 1,225/unit Units	Murata	0805	Ferrite Bead	-	-	30Ω	-	-	-	-	4A	Chip	Chip Ferrite Bead	-	-	2mm	-55°C	-	1.25mm	125°C	0.85mm	14mΩ	RoHS, REACH	-
In Stock Wurth Elektronik Ferrite Bead (Cable) 4 mm (Axial) (EMI Suppression), 50 Ω impedance at 25 MHz, 95 Ω impedance at 100 RS stock no. 265-1651 Mfr. Part No. 74270015 Subtotal (10 units, on tapes of 10) R 158,13(exc. VAT) R 15,813/unit Tape(s)	Wurth Elektronik	Axial	Ferrite Bead	50Ω	-	95Ω	Bulk	-	-	-	-	Cable	EMI Suppression	-	-	10mm	-25°C	-	-	125°C	-	-	REACH, RoHS	4mm
In Stock Murata Ferrite Bead 0.5 mm (Surface) (0402) (Chip Ferrite Bead), 270 Ω impedance at 25 MHz, 1.5 Ω impedance at 100 MHz, RS stock no. 223-4858 Mfr. Part No. BLM15BD152SZ1D Subtotal (100 units, on tapes of 100) R 56,60(exc. VAT) R 0,566/unit Tape(s)	Murata	0402	Ferrite Bead	270Ω	658Ω	1.5Ω	8mm wide Paper Tape	821Ω	-	242Ω	-	Surface	Chip Ferrite Bead	-	-	1mm	-55°C	-	0.5mm	125°C	0.5mm	-	AEC-Q200	-
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 1000 Ω impedance at 100 MHz, 1000 Ω impedance at 1 GHz RS stock no. 724-1368P Mfr. Part No. BLM18HG102SN1D Subtotal (25 units, supplied on a continuous strip) R 29,05(exc. VAT) R 1,162/unit Units	Murata	0603	Ferrite Bead	-	-	1000Ω	Tape & Reel	-	-	1000Ω	100mA	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	1.6Ω	REACH, RoHS	-
In Stock Murata Ferrite Bead 1.6 mm (Surface) (1806) (Chip Ferrite Bead), 180 Ω impedance at 100 MHz RS stock no. 724-1592 Mfr. Part No. BLM41PG181SN1L Subtotal (25 units, in packs of 25) R 98,95(exc. VAT) R 3,958/unit Pack(s)	Murata	1806	Ferrite Bead	-	-	180Ω	-	-	-	-	3.5A	Surface	Chip Ferrite Bead	-	-	4.5mm	-55°C	-	1.6mm	125°C	1.6mm	20mΩ	RoHS, REACH	-
In Stock Wurth Elektronik Ferrite Bead 0.9 mm (Surface) (0805) (EMI Suppression), 600 Ω impedance at 100 MHz RS stock no. 260-6874 Mfr. Part No. 74279204 Subtotal (10 units, in packs of 10) R 39,84(exc. VAT) R 3,984/unit Pack(s)	Wurth Elektronik	0805	Ferrite Bead	-	-	600Ω	Tape & Reel	-	-	-	200mA	Surface	EMI Suppression	-	-	2mm	-40°C	-	1.25mm	125°C	0.9mm	400mΩ	REACH, RoHS	-
In Stock Murata Ferrite Bead 0.85 mm (Surface) (0805) (Chip Ferrite Bead), 22 Ω impedance at 100 MHz RS stock no. 724-1539 Mfr. Part No. BLM21PG220SN1D Subtotal (25 units, in packs of 25) R 29,30(exc. VAT) R 1,172/unit Pack(s)	Murata	0805	Ferrite Bead	-	-	22Ω	Tape & Reel	-	-	-	6A	Surface	Chip Ferrite Bead	-	-	2mm	-55°C	-	1.25mm	125°C	0.85mm	9mΩ	REACH, RoHS	-
In Stock Wurth Elektronik Ferrite Bead RS stock no. 563-092P Mfr. Part No. 742792090 Subtotal (100 units, supplied on a continuous strip) R 315,80(exc. VAT) R 3,158/unit Units	Wurth Elektronik	-	Ferrite Bead	-	-	-	Tape & Reel	-	-	-	-	-	-	-	-	-	-55°C	-	-	125°C	-	-	RoHS	-
In Stock Murata Ferrite Bead 0.5 mm (Surface) (0402) (Chip Ferrite Bead), 22.5 Ω impedance at 25 MHz, 60 Ω impedance at 100 MHz, RS stock no. 223-4884 Mfr. Part No. BLM15PE600SH1D Subtotal (100 units, on tapes of 100) R 204,40(exc. VAT) R 2,044/unit Tape(s)	Murata	0402	Ferrite Bead	22.5Ω	42.5Ω	60Ω	Tape & Reel	98.2Ω	-	102Ω	1.1A	Surface	Chip Ferrite Bead	-	-	1mm	-55°C	-	0.5mm	125°C	0.5mm	60mΩ	RoHS, REACH	-
In Stock Wurth Elektronik Ferrite Bead (Cable) 4 mm (Axial) (EMI Suppression), 25 Ω impedance at 25 MHz, 45 Ω impedance at 100 RS stock no. 265-1675 Mfr. Part No. 7427007141 Subtotal (10 units, on tapes of 10) R 117,49(exc. VAT) R 11,749/unit Tape(s)	Wurth Elektronik	Axial	Ferrite Bead	25Ω	-	45Ω	Bulk	-	-	-	-	Cable	EMI Suppression	-	-	5mm	-25°C	-	-	125°C	-	-	RoHS, REACH	4mm
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 120 Ω impedance at 100 MHz RS stock no. 202-3550 Mfr. Part No. BLM18AG121SN1D Subtotal (20 units, in packs of 20) R 17,98(exc. VAT) R 0,899/unit Pack(s)	Murata	0603	Ferrite Bead	-	-	120Ω	Tape & Reel	-	-	-	500mA	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	180mΩ	REACH, RoHS	-
In Stock Murata Ferrite Bead 0.5 mm (Surface) (0402) (Chip Ferrite Bead), 470 Ω impedance at 100 MHz, 1200 Ω impedance at 1 GHz RS stock no. 839-0792P Mfr. Part No. BLM15GG471SN1D Subtotal (10 units, supplied on a continuous strip) R 51,77(exc. VAT) R 5,177/unit Units	Murata	0402	Ferrite Bead	-	-	470Ω	Tape & Reel	-	-	1200Ω	200mA	Surface	Chip Ferrite Bead	-	-	1mm	-55°C	-	0.5mm	125°C	0.5mm	1.3Ω	REACH, RoHS	-
In Stock Murata High Current Chip Power Line Bead 0.85 mm (Surface) (0805) (Chip Ferrite Bead), 220 Ω impedance at 100 MHz RS stock no. 724-1532P Mfr. Part No. BLM21PG221SN1D Subtotal (25 units, supplied on a continuous strip) R 42,05(exc. VAT) R 1,682/unit Units	Murata	0805	High Current Chip Power Line Bead	-	-	220Ω	-	-	-	-	2A	Surface	Chip Ferrite Bead	-	-	2mm	-55°C	-	1.25mm	125°C	0.85mm	45mΩ	RoHS, REACH	-
In Stock Murata Ferrite Bead 1.1 mm (Surface) (1206) (Chip Ferrite Bead), 600 Ω impedance at 100 MHz RS stock no. 839-0825 Mfr. Part No. BLM31PG601SH1L Subtotal (10 units, in bags of 10) R 33,69(exc. VAT) R 3,369/unit Bag(s)	Murata	1206	Ferrite Bead	-	-	600Ω	Tape	-	-	-	1.5A	Surface	Chip Ferrite Bead	-	-	3.2mm	-55°C	-	1.6mm	125°C	1.1mm	800mΩ	AEC-Q200, UL-94	-
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 220 Ω impedance at 100 MHz, 300 Ω impedance at 1 GHz RS stock no. 724-1328 Mfr. Part No. BLM18EG221SN1D Subtotal (25 units, in packs of 25) R 53,60(exc. VAT) R 2,144/unit Pack(s)	Murata	0603	Ferrite Bead	-	-	220Ω	Tape & Reel	-	-	300Ω	1A	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	150mΩ	RoHS, REACH	-
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 120 Ω impedance at 100 MHz RS stock no. 202-3550P Mfr. Part No. BLM18AG121SN1D Subtotal (20 units, supplied on a continuous strip) R 17,98(exc. VAT) R 0,899/unit Units	Murata	0603	Ferrite Bead	-	-	120Ω	Tape & Reel	-	-	-	500mA	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	180mΩ	REACH, RoHS	-
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 470 Ω impedance at 100 MHz, 600 Ω impedance at 1 GHz RS stock no. 724-1362 Mfr. Part No. BLM18HG471SN1D Subtotal (25 units, in packs of 25) R 30,375(exc. VAT) R 1,215/unit Pack(s)	Murata	0603	Ferrite Bead	-	-	470Ω	Tape & Reel	-	-	600Ω	200mA	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	850mΩ	REACH, RoHS	-
In Stock Murata Ferrite Bead 0.8 mm (Surface) (0603) (Chip Ferrite Bead), 470 Ω impedance at 100 MHz RS stock no. 747-4726 Mfr. Part No. BLM18KG471SN1D Subtotal (100 units, in bags of 100) R 67,00(exc. VAT) R 0,67/unit Bag(s)	Murata	0603	Ferrite Bead	-	-	470Ω	Tape & Reel	-	-	-	1.5A	Surface	Chip Ferrite Bead	-	-	1.6mm	-55°C	-	0.8mm	125°C	0.8mm	130mΩ	REACH, RoHS	-
In Stock Wurth Elektronik Ferrite Bead 6 mm (Through Hole) 6 mm (Axial) (6-Hole), 489 Ω impedance at 25 MHz, 600 Ω impedance at RS stock no. 260-6830 Mfr. Part No. 7427503 Subtotal (1 unit) R 9,58(exc. VAT) R 9,58/unit Units	Wurth Elektronik	Axial	Ferrite Bead	489Ω	-	600Ω	Bulk	-	-	-	3A	Through Hole	6-Hole	-	-	10mm	-25°C	2	-	125°C	6mm	20mΩ	IPC/JEDEC J-STD-020D	6mm