SMDR0802-221M datasheet(1/4 Pages) MERITEK

Part #	SMDR0802-221M

Description	Unshielded SMT Power Inductors

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Manufacturer	MERITEK [MERITEK ELECTRONICS CORPORATION]

Direct Link	http://www.meritekusa.com

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MERITEK

Unshielded SMT Power Inductors

SMDR Series

SMDR 0402/0802/0804/0810/1206 TYPE

• I sat: The current when the inductance becomes 10%

lower than its initial value. (Ta = 20 ºC)

• I rms: The current when temperature of coil increases up

to Max.

T = 40 ºC (Ta = 20 ºC)

• Operating temperature: -40 to 85 ºC

CHARACTERISTICS

• High power, high saturation, low resistence

• Ideal inductors for DC-DC conversion in notebook

computer, PDAs, Step-up or step-down converters, ﬂash

memory programmers, etc.

• SMDR0402 used ceramic base with gold-planting

• The others used LCP plastic base

FEATURES

SMDR0402..........1.0 ~ 1000 uH.............2.9 ~ 0.07A

SMDR0802..........10 ~ 1000 uH..............2.0 ~ 0.05A

SMDR0804..........1.0 ~ 1000 uH.............6.8 ~ 0.030A

SMDR0810..........10 ~ 1000 uH..............3.5 ~ 0.10A

SMDR1206..........1.0 ~ 1000 uH.............8.6 ~ 0.56A

INDUCTANCE AND RATED CURRENT RANGES

Test Equipments:

• L: Agilent 4284A LCR meter @ 100kHz 0.1V

• DC Resistance: Milli - ohm meter or equivalent

• SRF: Agilant 4291 B RF Impedance Analyzer

• Electrical speciﬁcations at 25 ºC

• Portable telephones

• Personable computers

• DC/DC converters, etc.

• Other various electronic appliances

APPLICATIONS

SMDR

Meritek Series

0802

Size (in mm)

Code

0402

0802

0804

0810

1206

See corresponded dimensions chart

Inductance (uH)

First two digits are signiﬁcant ﬁgures

Third Digit denotes number of Zeros

470

-

Tolerance

Code

K

M

10%

20%

±

M

PART NUMBERING SYSTEM

(1) Type: Surface Mount

(2) Style: DR Core OD =8.5mm H=4.0mm

(3) Inductance: 470 for 47uH

(4) Inductance Tolerance: K :

±10%; M : ±20%

ORDERING INFORMATION

SM

DR0804

- 470

M

(1)

(2)

(3)

(4)

ITEM

A (MAX) B (MAX) C (MAX)

D

E

F

H

I

J

SMDR0402

6.60

4.45

2.82

4.32

1.27

1.02

3.56

1.40

4.06

SMDR0802

12.95

9.40

3.50

7.62

2.54

2.79

2.92

7.37

SMDR0804

12.95

9.40

5.21

7.62

2.54

2.79

2.92

7.37

SMDR0810

12.95

9.40

11.43

7.62

2.54

2.79

2.92

7.37

SMDR1206

18.54

15.24

7.11

12.70

2.54

2.79

2.92

12.45

Shape and Size: (Dimensions are in mm)

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