2

Technical Data

4311

Effective November 2015

SD52

High power density, low profile shielded power inductors

www.eaton.com/elx

Product Specifications

Part marking

I

rms

2

(A)

I

sat

3

(A)

typ.

(V us) typ.

SD52-1R2-R

1.20

A

2.33

3.14

0.0279

1.49

SD52-2R2-R

2.20

B

1.98

2.30

0.0385

2.03

SD52-3R5-R

3.50

C

1.73

1.82

0.0503

2.57

SD52-4R7-R

4.70

D

1.63

1.64

0.0568

2.84

SD52-6R8-R

6.80

E

1.39

1.28

0.0777

3.65

SD52-100-R

10.0

F

1.11

1.11

0.1215

4.19

SD52-150-R

15.0

G

0.97

0.88

0.1618

5.27

SD52-220-R

22.0

H

0.86

0.73

0.2042

6.35

SD52-270-R

27.0

J

0.73

0.65

0.2864

7.16

SD52-330-R

33.0

K

0.70

0.61

0.3074

7.70

SD52-470-R

47.0

L

0.58

0.50

0.4465

9.32

SD52-680-R

68.0

M

0.47

0.42

0.6829

11.21

SD52-101-R

100

N

0.39

0.35

1.0000

13.37

SD52-151-R

150

O

0.31

0.28

1.6100

17.00

1. Open Circuit Inductance (OCL) Test Parameters: 100 kHz, 0.25 Vrms, 0.0 Adc.

2. Irms: DC current for an approximate ∆T of 40 °C without core loss. De-rating is necessary for AC currents.

Temperature rise is dependent upon several factors, including the PCB pad layout, trace thickness and width, air-flow

and proximity to other heat generating components. It is recommended the part temperature not exceed 125 °C under

worst case operating conditions and therefore, the temperature rise should be verified in the end use application.

3. Isat: Peak current for approximately 30% rolloff at +20 °C.

4. DCR limits @ 20°C.

5. Applied Volt-Time product (V-us) across the inductor at 100 kHz necessary to generate a core loss equal to 10% of

the total losses for 40 °C temperature rise.

6. Part number definition: SD52-xxx-R

SD52= Product code and size

-xxx=Inductance value in µH, R= decimal point - If no R is present, then last character equals the number of zeros

Dimensions (mm)

Packaging information (mm)

Parts packaged on 13” Diameter reel, 3,500 parts per reel.

RECOMMENDED PCB LAYOUT

SCHEMATIC

2

1

2.0

2 plcs

6.0

1.3

2 plcs

5.2 max

5.2 max

m

Pin #1 indicator

Part marking

2

1

2.0 max

m

5.6 max

m

0.65

±

0.10

xxxx

52

Direction of feed

Ko

SECTION A-A

1.5 Dia

min.

Bo

B

Ao

A

8.0

8 0

4.00

2.00 ± 0.05

1.5 Dia.

+0.1/-0.0

A

A

1.75

5.50

12.0

+/-0.3

0

10.2

0

3.0

Ao=5.72mm

Bo=5.72mm

Ko=2.30mm

Part Marking: 1st digit= the inductance value per part marking designator, 2nd digit = bi-weekly production date code, 3rd digit = last digit of

the year produced, 4th digit= internal manufacturing code.

52 = the product size code.

Do not route traces or vias underneath the inductor.