LD Series Metalized Drum Core Power Inductor Applications •Buck or boost inductor •Noise filtering and output filter chokes •Computers •Power supplies •Test equipment instrumentation Environmental Data •Storage temperature:-40°C to +125°C •Operating temperature:-40°C to +125°C (range is application specific). Temperature rise is approximately 40°C at rated rms current. •Solder reflow temperature:260°C max. for 10 seconds max. Packaging Description •Supplied in tape and reel packaging,LD1 (2,000), •Metalized drum core design utilizes board space LD2 (1,000) parts per reel •Current Range from 4.46 amps to 0.52 amps •Inductance range from 1.0µH to 470µH •Ferrite core material Part Rated OCL(1) Irms(2) Isat(3) DCR(4) Number Inductance Nominal Amps Amps (W ) (µH) (Max.) LD1-1R0-R 1.0 1.00 2.66 4.46 0.0330 LD1-1R4-R 1.4 1.40 2.47 3.41 0.0380 LD1-1R8-R 1.8 1.80 2.35 3.05 0.0420 LD1-2R2-R 2.2 2.20 2.22 2.76 0.0470 LD1-2R7-R 2.7 2.70 2.11 2.52 0.0520 LD1-3R3-R 3.3 3.30 2.00 2.32 0.0580 LD1-3R9-R 3.9 3.90 1.75 2.14 0.0760 LD1-4R7-R 4.7 4.70 1.57 2.00 0.0940 LD1-5R6-R 5.6 5.60 1.51 1.75 0.1010 LD1-6R8-R 6.8 6.80 1.41 1.56 0.1170 LD1-8R2-R 8.2 8.20 1.32 1.41 0.1320 LD1-100-R 10 10.0 1.13 1.28 0.1820 LD1-120-R 12 12.0 1.05 1.18 0.2100 LD1-150-R 15 15.0 0.99 1.05 0.2350 LD1-180-R 18 18.0 0.83 0.98 0.3380 LD1-220-R 22 22.0 0.78 0.89 0.3780 LD1-270-R 27 27.0 0.67 0.87 0.5220 LD1-330-R 33 33.0 0.66 0.75 0.5400 LD1-390-R 39 39.0 0.63 0.68 0.5870 LD1-470-R 47 47.0 0.52 0.61 0.8440 LD1-560-R 56 56.0 0.50 0.57 0.9370 LD1-680-R 68 68.0 0.46 0.52 1.12 Notes: 4) DCR limits @ 20°C 1) Open Circuit Inductance Test Parameters:100kHz,0.25Vrms,0.0Adc 5) Part number definition:LDx-yyy-R +/-20% except for LD1-330-R to LD1-331-R and LD2-470-R to LD2-471-R which is +/-10% LDx = product code and size,-yyy = inductance value in µH, 2) RMS current for an approximate D Tof 40°C. It is recommended that the temperature of the R=decimal point. If no R is present,third character = # of zeros part not exceed 125°C -R suffix = RoHS compliant 3) Peak current for an approximate 10% rolloff at 20°C 1207 BU-SB07325 Page 1 of 3 Data Sheet 4310

Part Rated OCL(1) Irms(2) Isat(3) DCR(4) Number Inductance Nominal Amps Amps (W ) (µH) (Max.) LD1-820-R 82 82 0.43 0.50 1.28 LD1-101-R 100 100 0.36 0.45 1.72 LD1-151-R 150 150 0.29 0.40 2.68 LD1-221-R 220 220 0.26 0.33 3.42 LD1-331-R 330 330 0.22 0.30 4.70 LD2-100-R 10 10.0 3.83 3.45 0.0700 LD2-120-R 12 12.0 3.57 3.20 0.0800 LD2-150-R 15 15.0 3.38 2.85 0.0900 LD2-180-R 18 18.0 3.19 2.60 0.1000 LD2-220-R 22 22.0 3.13 2.45 0.1100 LD2-270-R 27 27.0 2.81 2.10 0.1200 LD2-330-R 33 33.0 2.70 2.01 0.1300 LD2-390-R 39 39.0 2.42 1.85 0.1600 LD2-470-R 47 47.0 2.25 1.64 0.1800 LD2-560-R 56 56.0 1.96 1.50 0.2400 LD2-680-R 68 68.0 1.88 1.35 0.2800 LD2-820-R 82 82 1.63 1.28 0.3700 LD2-101-R 100 100 1.53 1.15 0.4300 LD2-121-R 120 120 1.43 1.09 0.4700 LD2-151-R 150 150 1.23 0.95 0.6400 LD2-181-R 180 180 1.15 0.87 0.7100 LD2-221-R 220 220 1.00 0.79 0.9600 LD2-271-R 270 270 0.94 0.73 1.11 LD2-331-R 330 330 0.83 0.64 1.26 LD2-391-R 390 390 0.78 0.58 1.77 LD2-471-R 470 470 0.74 0.55 1.96 Notes: 4) DCR limits @ 20°C 1) Open Circuit Inductance Test Parameters:100kHz,0.25Vrms,0.0Adc 5) Part number definition:LDx-yyy-R +/-20% except for LD1-330-R to LD1-331-R and LD2-470-R to LD2-471-R whichis +/-10% LDx = product code and size,-yyy = inductance value in µH, 2) RMS current for an approximate D Tof 40°C. It is recommended that the temperature of the R=decimal point. If no R is present,third character = # of zeros part not exceed 125°C -R suffix = RoHS compliant 3) Peak current for an approximate 10% rolloff at 20°C Dimensions - mm Top View Recommended Pad Layout Bottom View Schematic A Front View 1 H xxx B C Marking I G I 2 Component Side Marking: LD1:xxx=inductance value Dimensions A B C G H I per family chart +/-0.3 +/-0.3 +/-0.3 ref ref ref LD2:"C" logo LD1 4.5 4.0 3.2 1.5 4.5 1.75 LD2 7.8 7.0 5.0 2.0 7.5 3.0 xxx=inductance value 1207 BU-SB07325 Page 2 of 3 Data Sheet 4310

Packaging Information 8.0 LD1 Series Supplied in tape and reel packaging, 2000 parts per reel,13" diameter reel. ACTUAL SIZE 12.0 xxx xxx xxx xxx LD1 User Direction Feed LD2 Series Supplied in tape and reel packaging, 12.0 1000 parts per reel,13" diameter reel. ACTUAL SIZE 16.0 xxx xxx xxx xxx LD2 User Direction Feed Inductance Characteristics OCL vs Isat OCL vs Isat LD1 LD2 100 100 90 90 80 80 70 70 %) 60 %) 60 ( ( CL 50 CL 50 O O 40 40 30 30 20 20 10 10 0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 0 10 20 30 40 50 60 70 80 90 100 110 120 %ofIsat %ofIsat North America Europe Asia Pacific Cooper Bussmann Cooper Bussmann Cooper Bussmann Cooper Bussmann Cooper Bussmann 1225 Broken Sound Parkway NW P.O. Box 14460 Cooper (UK) Limited Avda. Santa Eulalia, 290 1Jalan Kilang Timor Suite F St. Louis, MO 63178-4460 Burton-on-the-Wolds 08223 #06-01 Pacific Tech Centre Boca Raton, FL 33487-3533 Tel: 1-636-394-2877 Leicestershire • LE12 5TH UK Terrassa, (Barcelona), Spain Singapore 159303 Tel: 1-561-998-4100 Fax: 1-636-527-1607 Tel: +44 (0) 1509 882 737 Tel: +34 937 362 812 Tel: +65 278 6151 Fax: 1-561-241-6640 Fax: +44 (0) 1509 882 786 +34 937 362 813 Fax: +65 270 4160 Toll Free: 1-888-414-2645 Fax: +34 937 362 719 This bulletin is intended to present product design solutions and technical information that will help the end user with design applications. Cooper Bussmann reserves the right,without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update,without notice,any technical information contained in this bulletin. Once a product has been selected,it should be tested by the user in all possible applications. Life Support Policy:Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company.Life support systems aredevices which support or sustain life,and whose failure to perform,when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. ©2007 Cooper Bussmann St.Louis, MO 63178 www.cooperbussmann.com 1207 BU-SB07325 Page 3 of 3 Data Sheet 4310