Inductors Designed for 8540-8548 Nationals’ 150 KHz SIMPLE SWITCHERTM INDUCTORS • Designed for use with National Semiconductor LM 259X series • Compact size and low cost • Meets flammability rating of UL 94V-0 MECHANICAL AND SCHEMATIC (All dimensions in inches) SUGGESTED PAD LAYOUT SCHEMATIC ISSUE: A 05/01 8540-8548 ELECTRICAL SPECIFICATION @ 25˚C Part Number Nominal Inductance (µH) Rated Current (Amps DC) Nominal DCR (Ω) 8540 17 3.00 0.05 8541 24 2.74 0.07 8542 37 2.24 8543 53 1.87 0.10 0.13 8544 77 1.54 0.20 8545 11 2 1.26 0.30 8546 168 1.02 0.40 8547 248 0.83 8548 377 0.68 0.60 1.00 NOTES: 1. SIMPLE SWITCHERTM is a trademark of National Semiconductor Corporation. 2. Inductance values are ±20%. 229 Colonnade Road, Ottawa, Ontario, Canada K2E 7K3 Tel: (613) 226-1626 Fax: (613) 226-7124 www.filtran.com An ISO 9001 Registered Company