2

Technical Data 4127

Effective October 2017

www.eaton.com/electronics

Product specifications

Dimensions- mm

SD3112

Low profile metalized shielded drum core power inductors

Packaging information- mm

Part Number

Rated

OCL (1)

Part

Irms (2)

Isat (3)

DCR (

Ω)

K-factor

Inductance

(µH)

Marking

(A)

(A)

typ. @

(4)

(µH)

Designator

+20 °C

SD3112-1R0-R

1.0

1.11+/-30%

A

1.39

1.65

0.069

135

SD3112-1R5-R

1.5

1.70+/-30%

B

1.16

1.33

0.099

110

SD3112-2R2-R

2.2

2.41+/-30%

C

0.97

1.12

0.140

92

SD3112-3R3-R

3.3

3.24+/-30%

D

0.90

0.97

0.165

79

SD3112-4R7-R

4.7

4.72+/-30%

E

0.74

0.80

0.246

66

SD3112-6R8-R

6.8

6.47+/-30%

F

0.68

0.68

0.291

56

SD3112-8R2-R

8.2

8.50+/-30%

G

0.57

0.60

0.408

49

SD3112-100-R

10.0

10.01+/-30%

H

0.55

0.55

0.446

45

SD3112-150-R

15.0

15.28+/-20%

I

0.45

0.44

0.654

37

SD3112-220-R

22.0

21.66+/-20%

J

0.37

0.37

0.953

31

SD3112-330-R

33.0

33.30+/-20%

K

0.30

0.30

1.48

25

SD3112-470-R

47.0

47.44+/-20%

L

0.270

0.25

1.85

21

SD3112-680-R

68.0

68.10+/-20%

M

0.228

0.211

2.56

17

SD3112-820-R

82.0

83.19+/-20%

N

0.213

0.190

2.93

16

SD3112-101-R

100.0

99.8+/-20%

O

0.184

0.174

3.95

14

SD3112-151-R

150.0

149.4+/-20%

P

0.149

0.142

6.01

12

SD3112-221-R

220.0

219.9+/-20%

Q

0.121

0.117

9.12

10

(1) Open Circuit Inductance Test Parameters: 100 kHz, 0.1 V, 0.0 Adc.

(2) Irms: DC current for an approximate DT of 40 °C without core loss. Derating is

necessary for AC currents. PCB layout, trace thickness and width, air-flow, and

proximity of other heat generating components will affect the temperature rise. It

is recommended that the temperature of the part not exceed

+125 °C under

worst case operating conditions verified in the end application.

(3) Isat Amperes peak for approximately 30% rolloff (@+20 °C)

(4) K-factor: Used to determine B p-p for core loss (see graph).

B p-p = K*L*

∆I, B p-p(mT), K: (K factor from table), L: (Inductance in uH),

∆(Peak to peak ripple current in Amps).

Dimensions are in millimeters.

Part Marking:

3 Digit Marking: (1st digit: Indicates inductance value per letter in Part Marking Designator); (2nd digit: Bi-weekly production date code); (3rd digit: Last digit of the year produced).

Do not route traces or vias underneath the inductor

Parts packaged on 13" Diameter reel,

4,100 parts per reel.

Discontinued,

Effective

July

31,

2016

or until

inventory

is depleted.

Please

review

SD3114

data

sheet

(4128)as

an alternate

replacement.