Wire-wound Chip Inductors - Shielded CT1812SF Series From 4.7 µH to 1,000 µH www.ctparts.com SPECIFICATIONS Parts are available in ±20% inductance tolerance only. Part Inductance Number (µH) CT1812SF-4R7M 4.7 CT1812SF-8R2M 8.2 L Test Freq. Q (MHz) Min. 7.96 6 7.96 5 SRF (MHz) Min. 50.0 30.0 DCR (Ω) Max. 0.90 0.82 IDC (mA) Max. 471 292 CT1812SF-100M CT1812SF-150M CT1812SF-470M CT1812SF-560M CT1812SF-680M CT1812SF-820M 10 15 47 56 68 82 2.52 2.52 2.52 2.52 2.52 2.52 8 8 10 10 15 30 25.0 13.0 11.5 8.00 9.00 6.00 1.80 2.20 1.20 3.00 6.00 12.0 333 301 120 235 130 79 CT1812SF-101M CT1812SF-121M CT1812SF-221M CT1812SF-471M CT1812SF-681M CT1812SF-821M 100 120 220 470 680 820 2.52 0.796 0.796 0.796 0.796 0.796 30 35 40 40 40 25 6.00 5.00 4.00 3.30 2.10 1.45 14.0 3.64 8.00 14.0 17.0 16.8 73 139 150 82 90 210 CT1812SF-102M 1000 0.796 40 1.80 29.0 6 PHYSICAL DIMENSIONS Size A B C D mm inches 4.5±0.4 3.2±0.3 3.2±0.3 0.177±0.016 0.12±0.012 0.12±0.012 Not Shown at Actual Size CHARACTERISTICS Description: SMD Shielded Wire-wound Chip Inductor. Applications: Personal computers, ADSL/VoIP, Hard disk drives, etc. Operating Temperature: -35°C to +85°C Inductance Tolerance: ±20% Testing: Inductance is tested on a HP4285A or a HP4286A at the specified frequency. 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. A Max. 5.1 0.20 C XXX B D Marking: Inductance Code PAD LAYOUT Unit: mm 4.0 Ref. 1.5 Ref. 3.0 Ref. Manufacturer of Passive Components 800-684-5322 Inside US 949-453-1811 Outside US Copyright © 2011 by CT Magnetics, DBA Central Technologies. All rights reserved. CT Magnetics reserves the right to make improvements or change specifications without notice REV 08.26.11