TDK VLM Series VLM10555-2 specifications 1R8M, Conformity to RoHS Directive, Features

SMD Inductors(Coils)

For Power Line(Wound, Magnetic Shielded)

(1/1)

Conformity to RoHS Directive

VLM Series VLM10555-2

FEATURES

SHAPES AND DIMENSIONS

•Low loss and large current capability design.

•High magnetic shield construction should actualize high resolu- tion for EMC protection.

•Available for automatic mounting in tape and real package.

APPLICATIONS

Note book type and mobile computers, amusement equipment, DVD players, VRMs, plasma displays, etc.

1R8M

10.6±0.2

10.5max.

5.4±0.2

Dimensions in mm

RECOMMENDED PC BOARD PATTERN

8.7

3.7

1.8

2.73.9

11.5

Dimensions in mm

ELECTRICAL CHARACTERISTICS

		Inductance			DC resistance			Rated current(A)∗
	Inductance		Test frequency					Based on inductance change		Based on
Part No.		tolerance			(mΩ)
	(µH)		(kHz)					max.(typ.)		temperature rise
		(%)
				[±15%]		typ.		[at 25°C]	[at 100°C]	typ.
VLM10555T-1R8M8R8-2	1.8	±20	100	5.6		5.6	18(20)		14(16)	8.8
VLM10555T-2R5M8R0-2	2.5	±20	100	6.7		6.7	15(17)		12(14)	8
VLM10555T-3R3M7R2-2	3.3	±20	100	8.3		8.3	12(14)		10(12)	7.2
VLM10555T-4R3M7R2-2	4.3	±20	100	8.3		8.3	9(11)		7(9)	7.2

∗Rated current: Value obtained when current flows and the temperature has risen to 40°C or when DC current flows and the nominal value of inductance has fallen by 30%, whichever is smaller.

TYPICAL ELECTRICAL CHARACTERISTICS

INDUCTANCE CHANGE vs. DC SUPERPOSITION TEMPERATURE RISE CHARACTERISTICS

CHARACTERISTICS
	4.5
	4.0
	3.5
)	3.0
H
(∝
Inductance	2.5
	2.0
	1.5
	1.0
	0.5
	0.0	5	10	15	20	25
	0
			DC current (A)

Self-temperature rise(˚C)

60

55

50

45

40

35

30

25

20

15

10

5

0

0

1.8∝H

2.5∝H

3.3∝H/4.3∝H

2	4	6	8	10	12
		DC current (A)

1.8∝H[at 25˚C]	1.8∝H[at 100˚C]
2.5∝H[at 25˚C]	2.5∝H[at 100˚C]
3.3∝H[at 25˚C]	3.3∝H[at 100˚C]
4.3∝H[at 25˚C]	4.3∝H[at 100˚C]

•Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.

•All specifications are subject to change without notice.

001-03 / 20080822 / e531_vlm10555_2