Power Inductors - Shielded From 1.4 µH to 1,000 µH Not Shown at Actual Size SPECIFICATIONS Part Number CTMSS1278F-1R4M CTMSS1278F-4R7M CTMSS1278F-6R0M CTMSS1278F-8R2M Part numbers indicate inductance tolerance available. M = ±20%, K = ±10% Irms based on temp. rise 40°C Typ. Isat based on DL/L0A=20% Max. Inductance SRF DCR at 100kHz Typ. Max. Irms (µH) (MHz) (mW) (A) 1.4 80.0 11 10.00 4.7 30.0 20 6.20 6.0 21.0 24 6.00 8.2 20.0 28 5.90 CTMSS1278F-100M CTMSS1278F-120M CTMSS1278F-150M CTMSS1278F-180M CTMSS1278F-220M CTMSS1278F-270M CTMSS1278F-330M CTMSS1278F-390M CTMSS1278F-470M CTMSS1278F-560M CTMSS1278F-680M CTMSS1278F-820M 10 12 15 18 22 27 33 39 47 56 68 82 17.0 15.0 13.0 12.0 11.0 10.0 9.5 8.5 7.5 7.0 6.5 5.0 30 32 38 43 50 60 80 85 100 110 120 150 5.70 5.20 4.90 4.50 4.00 3.60 3.10 3.00 2.90 2.70 2.60 2.30 8.00 7.50 6.80 6.30 5.70 5.00 4.70 4.60 3.80 3.50 3.20 3.00 CTMSS1278F-101M CTMSS1278F-121K CTMSS1278F-151K CTMSS1278F-181K CTMSS1278F-221K CTMSS1278F-271K CTMSS1278F-331K CTMSS1278F-391K CTMSS1278F-471K CTMSS1278F-561K CTMSS1278F-681K CTMSS1278F-821K 100 120 150 180 220 270 330 390 470 560 680 820 4.5 4.3 4.1 4.0 3.4 3.1 2.9 2.7 2.2 2.0 1.7 1.4 180 230 270 300 400 530 600 680 880 960 1300 1500 2.00 1.90 1.80 1.70 1.60 1.20 1.00 1.00 0.90 0.80 0.75 0.70 2.60 2.50 2.20 2.00 1.80 1.60 1.50 1.30 1.20 1.10 1.00 0.95 CTMSS1278F-102K 1000 1.3 1700 0.68 0.85 CHARACTERISTICS PAD LAYOUT Unit: mm PHYSICAL DIMENSIONS Size A B C mm inches D Max. E Typ. Typ. 12.0±0.3 12.0±0.3 8.0 5.0 5.7 0.472±0.012 0.472±0.12 0.315 0.197 0.224 A 100 D C B Description: SMD (shielded) power inductor. Applications: LCD panels, PC notebooks, portable communication equipment, DC/DC converters, etc. Temp. Rise: 40°C Typ. Operating Temperature: -40°C to +125°C (temp. rise included) Storage Temperature: -40°C to +125°C Inductance Tolerance: ±10%, ±20% Testing: Inductance tested at 100KHz, 0.1V. Resistance to solder heat: 245°C, 10 seconds. Packaging: Tape & Reel. Marking: Parts are marked with inductance code. Miscellaneous: RoHS Compliant. Magnetically shielded. Additional Information: Additional electrical & physical information available upon request. Samples available. See website for ordering information. Isat (A) 18.00 11.00 10.00 8.50 E CTMSS1278F Series www.ctparts.com Marking 5.5Ref. 4.0Ref. 4.5Ref. 4.0Ref. Manufacturer of Passive Components 800-684-5322 Inside US 949-453-1811 Outside US Copyright © 2012 by CT Magnetics, DBA Central Technologies. All rights reserved. CT Magnetics reserves the right to make improvements or change specifications without notice REV 05.21.12