B82477X0004

Sample Kit 2020 SMT Power Inductors B82477D4*M900 www.tdk-electronics.tdk.com SMT Power Inductors – Dual Inductor 12.5 x 12.5 x 8.5 (mm) Lind ±20% IR Isat. typ RDC. typ Ktyp Ordering code µH A A mΩ % B82477 Features • Special winding technology for tight coupling of the two windings (coupling factor K = 97% to 99%) • Magnetically shielded • Winding welded to terminals • Base plate construction for high mechanical robustness • Temperature range up to +150 °C • Qualification to AEC-Q200 4.7 5.24 10 23.2 97 D4472M900 10 4.54 6.5 35.5 99 D4103M900 Applications • DC/DC converter, especially for SEPIC topology • Buck converter with auxililary output • Common mode choke • 1:1 transformer Inductance is per winding. When leads are connected in parallel, inductance is the same value. When leads are connected in series, inductance is four times the value. RDC is for each winding. When leads are connected in parallel, RDC = R1 x R2 / R1 + R2. When leads are connected in parallel, RDC is half the value. When leads are connected in series, RDC is twice the value. Isat is the current flowing through one winding. When leads are connected in parallel, Isat is the same. When leads are connected in series, Isat is half the value. IR is the total current through both windings. I1 and I2 can be calculated like this: I12 + I22 = IR2 © TDK Electronics AG · Edition 2020 · Ordering No. B82477D4*M900 · SO 0520 15 3.7 5.5 47.5 99 D4153M900 22 3.11 4.5 67 99 D4223M900 47 2.4 3.3 109 99 D4473M900 4.7 µH 10.0 µH 15.0 µH 22.0 µH 47.0 µH Important information: It is incumbent on the customer to check and decide whether a product is suitable for use in a particular application. Our products are described in detail in our data sheets. Our Important notes and the product-specific Cautions and warnings must be observed. All relevant information is available through our sales offices.