FDA1254 Series IRON POWDER SURFACE MOUNT FIXED INDUCTOR TYPE FDA1254 Inductance Range: 0.68 - 8.0H Frequency Range: 0.1 - 5MHz Description The TOKO FDA1254 Series is a compact, high-current surface mount fixed inductor with a maximum DC current rating of 23 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 & Recommended Patterns: Compact size: 13.8mm x 12.9mm Low profile: 5.4mm maximum High DC current: 23.7A at 0.68H Magnetically shielded Low DC resistance Low audible noise Reflow solderable Packaged on 500 piece reels Lead-free terminations TOKO Part No. A B C FDA1254-R68M=P3 13.5 1.8 7.7 FDA1254-1R0M=P3 13.5 1.8 7.7 FDA1254-1R2M=P3 13.5 1.8 7.7 FDA1254-2R2M=P3 13.2 1.5 7.6 FDA1254-3R3M=P3 12.9 1.2 7.6 FDA1254-4R7M=P3 12.9 1.2 7.6 Unit: mm FDA1254-8R0M=P3 12.9 1.2 7.6 Tolerance: 0.3mm 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 FDA1254 (1) (2) (3) (3) TOKO Inductance Tolerance Test DC Inductance Temperature Absolute Part (H) ( % ) Freq. Resistance Decrease Current Rise Current Max. Number (kHz) (m) max. -20% (A) max. +40C (A) max. Voltage (V) FDA1254-R68M=P3 0.68 20 100 1.5 29.1 23.7 30 FDA1254-1R0M=P3 1.0 20 100 2.0 25.2 20.5 30 FDA1254-1R2M=P3 1.2 20 100 2.6 20.2 18.4 30 FDA1254-2R2M=P3 2.2 20 100 4.5 14.7 14.2 30 FDA1254-3R3M=P3 3.3 20 100 7.0 13.1 11.5 30 FDA1254-4R7M=P3 4.7 20 100 8.8 11.2 10.2 30 FDA1254-8R0M=P3 8.0 20 100 16.0 9.1 7.1 30 Note: =P3 is added to each part number to indicate tape and reel packaging. March 2006 1 CF-278-FDA1254 2006 TOKO America, Inc. R-LOG0306A All Rights Reserved Printed in USA FDA1254 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 manu - facture 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: