Amorphous Magnetic Parts

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AMOBEADS™ and SPIKE KILLER™ Noise Suppression Devices

Our AMOBEADS™ and SPIKE KILLER™ noise inhibitor parts are amorphous magnetic parts with a high magnetic permeability. They have a higher noise suppression effect than CR snubbers and ferrite beads, and are effective as measures against harmonic regulation. AMOBEADS™ is particularly useful for situations in which immediate measures against noise are required, as it can be directly placed onto MOSFET and diode leads with no machining of the circuit board required. Our range also includes SPIKE KILLER™, which has an even stronger noise inhibiting effect than AMOBEADS™.

ノイズ抑制素子アモビーズ<sup>®</sup>・スパイクキラー<sup>®</sup>

Index

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Features

Low coercivity, providing greater noise inhibiting effect
Outstanding saturation potential, minimizing adverse effects on other parts
Easy noise inhibiting - simply pass through the lead section of a semiconductor (AMOBEADS™)
AMOBEADS™ range includes type with lead and SMD type
Low-priced DY series available for customers who purchase 10kp or higher

Examples of uses

Switching power supplies (secondary output diodes)
Switching power supplies (other)
DC/DC converters
Motor control circuits
In-vehicle motor actuators

Standard Specifications

You can sort by clicking the "▼" in the heading "Finished dimensions" or "Total magnetic flux" and select the product name you want.

Type No.	Finished Dimensions [mm]			Total Flux	AL value	Series
Type No.	O.D. max	I.D. min	H.T. max	φc[μWb]min	L[μH]min	Series
AB 3 × 2 × 3 W	4.0	1.5	4.5	0.9	3.0	AMOBEADS™
AB 3 × 2 × 4.5 W	4.0	1.5	6.0	1.3	5.0	AMOBEADS™
AB 4 × 2 × 4.5 W	5.0	1.5	6.0	2.7	9.0	AMOBEADS™
AB 4 × 2 × 6 W	5.0	1.5	7.5	3.6	12.0	AMOBEADS™
AB 4 × 2 × 8 W	5.0	1.5	9.5	4.8	16.0	AMOBEADS™
AB 2.8 × 4.5 DY	4.2	※1	6	0.9	-	AMOBEADS™（Low-priced DY series）
AB 3 × 2 × 3 DY	4.2	※1	4.5	0.9	-	AMOBEADS™（Low-priced DY series）
AB 3 × 2 × 4.5 DY	4.2	※1	6	1.3	-	AMOBEADS™（Low-priced DY series）
AB 4 × 2 × 6 DY	5.3	※1	7.5	3.6	-	AMOBEADS™（Low-priced DY series）
AB 5 × 4 × 3 DY	6.15	※2	4.5	0.45	-	AMOBEADS™（Low-priced DY series）
SS 7 × 4 × 3 W	9.1	3.3	4.8	3.15	-	SPIKE KILLER™
SS 10 × 7 × 4.5 W	11.5	5.8	6.6	4.73	-	SPIKE KILLER™
SS 12 × 8 × 4.5 W	13.8	6.8	6.6	6.31	-	SPIKE KILLER™
SS 14 × 8 × 4.5 W	15.8	6.8	6.6	9.46	-	SPIKE KILLER™
SS 18 × 12 × 4.5 W	19.8	10.8	6.6	9.46	-	SPIKE KILLER™
SS 21 × 14 × 4.5 W	22.8	12.8	6.6	11.00	-	SPIKE KILLER™

If the circuit voltage is high and the reverse recovery time of the diode is long, please consider SPIKE KILLER™, which can be wound and has a high total magnetic flux.

Wired SPIKE KILLER™

Prduct name symbol	Core No.	Current*1[A]	Wire diameterφ[mm]	N[turn]	Flux*2[μWb]	Finished dimensions[mm]
Prduct name symbol	Core No.	Current*1[A]	Wire diameterφ[mm]	N[turn]	Flux*2[μWb]	Outer diameter Amax	Height Bmax
SS07S0309	SS7x4x3W	0.5	0.3	9	28.3	12	8
SS07S0507	SS7x4x3W	1.5	0.5	7	22.1	12	8
SS07S0510	SS7x4x3W	1.5	0.5	10	31.5	12	8
SS07S0515	SS7x4x3W	1.5	0.5	15	47.3	12	8
SS10S05105	SS10x7x4.5W	1.5	0.5	5	23.7	14	10
SS10S05107	SS10x7x4.5W	1.5	0.5	7	33.1	14	10
SS10S05110	SS10x7x4.5W	1.5	0.5	10	47.3	14	10
SS10S09110	SS10x7x4.5W	5	0.9	10	47.3	15	11
SS14S09108	SS14x8x4.5W	5	0.9	8	75.7	20	11
SS14S09205	SS14x8x4.5W	10	0.9x2	5	47.3	20	11

*1:The current value is a reference value calculated from the cross-sectional area of the winding.
*2:Total flux of core × turn
The values in the table are for reference only and are not guaranteed values.

●AMOBEADS™ with leads LB series

Amobeads are equipped with leads to improve ease of mounting. Radial taping type is also available for automatic mounting.

（１）Lead type

Product name symbol	Finished d1iensions[mm]				Current*1 [A]	Total magnetic flux*2 φc[μWb]	AL value*3 L[μH]	Insulating Covers*4	Packaging unit[pcs/box]
Product name symbol	Length B	Lead D	Pitch E	Lead diameter F	Current*1 [A]	Total magnetic flux*2 φc[μWb]	AL value*3 L[μH]	Insulating Covers*4	Packaging unit[pcs/box]
LB4X2X8F	16.0	4.2±0.5	14.0±1.0	φ1.25±0.1	(8.0)	4.8 min	16.0 min	Black PBT	1,000
LB4X2X8U	20.0	4.0±0.5	5.0±1.0	φ1.25±0.1	(8.0)	4.8 min	16.0 min	Black PBT	1,000

*1:The current value is a reference value calculated from the cross-sectional area of the winding.
*2 1kHz,100mA(sine wave),The inductance at room temperature is calculated from L1.φc[μWb]＝0.282xL1[μH]
*3 Measurement conditions:50kHz,1V,1turn,room temperature.
*4 UL standard 94V-0 certified material
The values in the table are for reference only and are not guaranteed values.

（２）Radial taping type

Product name symbol	Finished dimensions[mm]					Current*1 [A]	Total magnetic flux*2 φc[μWb]	Packaging unit[pcs/box]
Product name symbol	Pitch P	Pitch P0	Guide hole diameter D0	Outer diameter a	Lead wire diameter d	Current*1 [A]	Total magnetic flux*2 φc[μWb]	Packaging unit[pcs/box]
LB2.8x4.5U	12.7	12.7	φ4.0	9.0max	φ0.8	(5)	0.9min	3,000

*1:The current value is a reference value calculated from the cross-sectional area of the winding.
*2 1kHz,100mA(sine wave),The inductance at room temperature is calculated from L1.φc[μWb]＝0.282xL1[μH]
The values in the table are for reference only and are not guaranteed values.

●Surface mount AMOBEADS™ SMD series

These are surface mount type AMOBEADS™. They are taping type that can be automatically mounted.

Photos of surface mounted Amobeads and measurement locations

product name symbol	Finished dimensions[mm]				Current*1 [A]	Total magnetic flux*2 φc[μWb]min	AL value*3 L[μH] min	Insulating Covers*4	Packaging unit[pcs/box]
product name symbol	Width_W max	Length_L max	Hight_H max	Lead Dimensions	Current*1 [A]	Total magnetic flux*2 φc[μWb]min	AL value*3 L[μH] min	Insulating Covers*4	Packaging unit[pcs/box]
AB3x2x3SM	5.3	5.3	4.3	(1.8x0.35)	(6.0)	0.9	3.0	Black LCP	2,000
AB4x2x6SM	6.3	8.3	5.3	(1.8x0.52)	(4.8)	3.6	12.0	Black LCP	1,000

Example of reflow soldering pattern for surface mount AMOBEAD

Example of land pattern for surface mount AMOBEADS

Product introduction video

Catalog

General catalog of Amorphous Magnetic Parts(PDF:3.1MB)

Environmental specifications of AMOBEADS™ and SPIKE KILLER™

Strage temperature range	Usage temperature range
ｰ20 to 50℃（ambient temperature）	ｰ20 to 120℃（including core self-temperature rise. Natural air cooling.）

Electrical characteristics of AMOBEADS™ and SPIKE KILLER™

Item(guaranteed value)	Specification
Insulation resistance	DC500V is applied between the core and core exterior surface, and the insulation resistance is over 1000MΩ.
Withstand voltage	No abnormalities shall occur even if AC500V is applied between the core exterior surface for one minute.

＊Reference＊ AMOBEADS™ Simulation SPICE parts model

Environmental information download

RoHS Directive Prohibited Substances Non-Use Certificate Download

It is possible to download a certificate of non-use for 10 regulated substances under the RoHS Directive.

Certificate PDF

Target products are amorphous standard products.
Please contact the you purchased shop for other requests.

Products	Item name
AMOBEADS™	AB3X2X3W	AB3X2X4.5W	AB4X2X4.5W	AB4X2X6W	AB4X2X8W
	AB2.8X4.5DY	AB3X2X3DY	AB3X2X4.5DY	AB4X2X6DY	AB5X4X3DY
	LB4X2X8F	LB4X2X8U	LB2.8X4.5U
	AB3X2X3SM	AB4X2X6SM
SPIKE KILLER™	SS7X4X3W	SS10X7X4.5W	SS14X8X4.5W
Saturable Cores for Mag Amps	MT12S115	MT12S208	MT15S125	MT15S214	MT18S130
	MT18S222	MT21S134	MT21S222
	MT10X7X4.5W	MT12X8X4.5W	MT14X8X4.5W	MT15X10X4.5W	MT16X10X6W
	MT18X12X4.5W	MT21X14X4.5W
	MS7X4X3W	MS10X7X4.5W	MS12X8X4.5W	MS12X8X4.5W-HF	MS14X8X4.5W
	MS15X10X4.5W	MS16X10X6W	MS18X12X4.5W	MS21X14X4.5W	MS26X16X4.5W
FS Series Cores with High Magnetic Permeability	FS12X8X4.5W	FS18X12X4.5W	FS21X14X4.5W	FS26X16X10W	FS32X20X10W