FDH1040 / FDH1040B Series IRON POWDER SURFACE MOUNT FIXED INDUCTOR TYPE FDH1040 / FDH1040B Inductance Range: 0.36 - 0.56H Frequency Range: 0.1 - 5MHz Description The TOKO FDH1040 / FDH1040B Series is a compact, high-current surface mount fixed inductor with a maximum DC current rating of 24 Amps. Manufactured with a proprietary iron powder composition and process, the product is specifically designed for high current, space constrained DC-DC converter applications in portable computing, point-of-load modules, and computer peripherals. Features Dimensions Compact size: 11.5mm x 10.5mm Low profile: 4.0mm maximum High DC current: 24.0A at 0.36H Magnetically shielded Low DC resistance Low audible noise Reflow solderable Packaged on 500 piece reels Lead-free terminations FDH1040 Recommended Patterns: FDH1040B FDH1040B FDH1040 * * * * * * * * * Unit: mm Unit: mm STANDARD PARTS SELECTION GUIDE (1) Inductance is measured by LCR-meter 4284A (Agilent) or equivalent. (2) DC resistance is measured by Digital Multimeter 34420A (Agilent) or equivalent. (3) Maximum allowable DC current is that which causes a 20% inductance reduction from the initial value, or coil temperature to rise by 40C, whichever is smaller. (Reference ambient temperature 20C). TYPE FDH1040 / FDH1040B TOKO Part Number DC (2) Inductance (3) Temperature (3) Absolute Inductance (1) Tolerance Test (%) Freq. Resistance Decrease Current Rise Current Max. (H) (kHz) (m) max. [-20%] (A) max. [+40C] (A) max. Voltage (V) FDH1040-R36M=P3 0.36 20 100 1.4 28.0 24.0 30 FDH1040B-R36M=P3 0.36 20 100 1.4 28.0 24.0 30 FDH1040-R56M=P3 0.56 20 100 1.9 22.0 20.0 30 FDH1040B-R56M=P3 0.56 20 100 1.9 22.0 20.0 30 Note: =P3 is added to each part number to indicate tape and reel packaging. March 2006 (c) 2006 TOKO America, Inc. All Rights Reserved Printed in USA CF-277-FDH1040 R-LOG0306A 1 FDH1040 / FDH1040B Series IRON POWDER SURFACE MOUNT FIXED INDUCTOR TYPICAL CHARACTERISTICS The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. TOKO America, Inc. 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Web: http://www.tokoam.com March 2006 (c) 2006 TOKO America, Inc. All Rights Reserved Printed in USA CF-277-FDH1040 R-LOG0306A 2