60.0%

120.0%

100.0%

80.0%

40.0%

20.0%

0.0%

0.0%

20.0%

40.0%

60.0%

80.0%

100.0%

120.0%

140.0%

160.0%

% of Isat

OCL vs. Isat

-40 Deg.C

+25 Deg.C

+85 Deg.C

Inductance Characteristics

DR1040 Series

Low Profile Power Inductors

Temperature Rise vs. Loss

0

20

40

60

80

100

120

0

0.2

0.4

0.6

0.8

1

1.2

Total Loss (W)

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This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Electronic

Technologies reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper

Electronic Technologies also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been

selected, it should be tested by the user in all possible applications.

Life Support Policy: Cooper Electronic Technologies does not authorize the use of any of its products for use in life support devices or systems without the

express written approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when

properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.

PM-4147 3/07

© Cooper Electronic

Technologies 2007