Power Inductors - Shielded Part Inductance Number (µH) CTDS3308F-2R2M 2.2 CTDS3308F-3R0M 3.0 CTDS3308F-3R9M 3.9 CTDS3308F-4R7M 4.7 CTDS3308F-6R8M 6.8 DCR Max. IDC (mΩ) (A) 45 3.50 62 3.00 70 2.80 78 2.50 100 2.20 10 12 15 18 22 27 33 39 47 56 68 82 100 100 100 100 100 100 100 100 100 100 100 100 30 35 35 35 40 40 40 40 40 40 40 30 38 29 30 25 22 18 17 17 15 14 12 11 145 185 200 270 300 400 450 560 650 680 800 1200 2.00 1.75 1.50 1.40 1.30 1.20 1.10 0.95 0.80 0.75 0.70 0.65 CTDS3308F-101M CTDS3308F-121M CTDS3308F-151M CTDS3308F-181M CTDS3308F-221M CTDS3308F-271L CTDS3308F-331L CTDS3308F-391L CTDS3308F-471L 100 120 150 180 220 270 330 390 470 100 100 100 100 100 100 100 100 100 45 50 50 50 50 50 45 45 50 9.5 8.5 8.0 7.0 6.5 5.5 5.2 5.0 4.5 1400 1520 1800 2200 2200 3100 3600 4600 5100 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.20 PHYSICAL DIMENSIONS Size A B C D E 10.1±0.2 12.7±0.2 2.7±0.3 2.4±0.2 2.2±0.2 0.4±0.009 0.5±0.009 0.1±0.012 0.09±0.009 0.08±0.009 C 7.6±0.3 0.3±0.012 E D A F F mm inches XXX Description: SMD (shielded) Power Inductor. Applications: DC-DC converter, notebook computers, PDA, cell phones, step-up or step-down converters, flash memory, etc. Operating Temperature: -40°C to +85°C Rated Current: Based on temp. rise and DL/L0A = 10% Max. Temp. Rise: 40°C Max. Resistance to Solder Heat: 260°C. 10 Seconds Inductance Tolerance: ±15%, ±20% Testing: Inductance is tested on a HP4285A at 100KHz, 1V Packaging: Tape & Reel. Marking: Parts are marked with inductance code. Miscellaneous: RoHS Compliant. Additional Information: Additional electrical & physical information available upon request. Samples available. See website for ordering information. SRF Typ. (MHz) 90 70 60 50 50 CTDS3308F-100M CTDS3308F-120M CTDS3308F-150M CTDS3308F-180M CTDS3308F-220M CTDS3308F-270M CTDS3308F-330M CTDS3308F-390M CTDS3308F-470M CTDS3308F-560M CTDS3308F-680M CTDS3308F-820M Not Shown at Actual Size CHARACTERISTICS L Test Freq. Q (KHz) Ref. 100 30 100 30 100 30 100 30 100 30 D From 2.2 µH to 470 µH SPECIFICATIONS Part numbers indicate inductance tolerance available. L = ±15%, M = ±20% B CTDS3308F Series www.ctparts.com Inductance code PAD LAYOUT Unit: mm 3.0 7.3 3.0 2.8 Manufacturer of Passive Components 800-684-5322 Inside US 949-453-1811 Outside US Copyright © 2010 by CT Magnetics, DBA Central Technologies. All rights reserved. CT Magnetics reserves the right to make improvements or change specifications without notice REV 05.24.10