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 • Supplied in tape and reel packaging, LD1 (2,000), LD2 (1,000) parts per reel Description • Metalized drum core design utilizes board space • Current Range from 4.46 amps to 0.52 amps • Inductance range from 1.0µH to 470µH • Ferrite core material Part Number LD1-1R0-R LD1-1R4-R LD1-1R8-R LD1-2R2-R LD1-2R7-R LD1-3R3-R LD1-3R9-R LD1-4R7-R LD1-5R6-R LD1-6R8-R LD1-8R2-R LD1-100-R LD1-120-R LD1-150-R LD1-180-R LD1-220-R LD1-270-R LD1-330-R LD1-390-R LD1-470-R LD1-560-R LD1-680-R Rated Inductance (µH) 1.0 1.4 1.8 2.2 2.7 3.3 3.9 4.7 5.6 6.8 8.2 10 12 15 18 22 27 33 39 47 56 68 OCL(1) Nominal Irms(2) Amps Isat(3) Amps 1.00 1.40 1.80 2.20 2.70 3.30 3.90 4.70 5.60 6.80 8.20 10.0 12.0 15.0 18.0 22.0 27.0 33.0 39.0 47.0 56.0 68.0 2.66 2.47 2.35 2.22 2.11 2.00 1.75 1.57 1.51 1.41 1.32 1.13 1.05 0.99 0.83 0.78 0.67 0.66 0.63 0.52 0.50 0.46 4.46 3.41 3.05 2.76 2.52 2.32 2.14 2.00 1.75 1.56 1.41 1.28 1.18 1.05 0.98 0.89 0.87 0.75 0.68 0.61 0.57 0.52 Notes: 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25Vrms, 0.0Adc +/-20% except for LD1-330-R to LD1-331-R and LD2-470-R to LD2-471-R which is +/-10% 2) RMS current for an approximate ∆T of 40°C. It is recommended that the temperature of the part not exceed 125°C 3) Peak current for an approximate 10% rolloff at 20°C 1207 BU-SB07325 Page 1 of 3 4) DCR limits @ 20°C 5) Part number definition: LDx-yyy-R LDx = product code and size, -yyy = inductance value in µH, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant Data Sheet 4310 DCR(4) (Ω) (Max.) 0.0330 0.0380 0.0420 0.0470 0.0520 0.0580 0.0760 0.0940 0.1010 0.1170 0.1320 0.1820 0.2100 0.2350 0.3380 0.3780 0.5220 0.5400 0.5870 0.8440 0.9370 1.12 Part Number Rated Inductance (µH) 82 100 150 220 330 10 12 15 18 22 27 33 39 47 56 68 82 100 120 150 180 220 270 330 390 470 LD1-820-R LD1-101-R LD1-151-R LD1-221-R LD1-331-R LD2-100-R LD2-120-R LD2-150-R LD2-180-R LD2-220-R LD2-270-R LD2-330-R LD2-390-R LD2-470-R LD2-560-R LD2-680-R LD2-820-R LD2-101-R LD2-121-R LD2-151-R LD2-181-R LD2-221-R LD2-271-R LD2-331-R LD2-391-R LD2-471-R OCL(1) Nominal Irms(2) Amps Isat(3) Amps 82 100 150 220 330 10.0 12.0 15.0 18.0 22.0 27.0 33.0 39.0 47.0 56.0 68.0 82 100 120 150 180 220 270 330 390 470 0.43 0.36 0.29 0.26 0.22 3.83 3.57 3.38 3.19 3.13 2.81 2.70 2.42 2.25 1.96 1.88 1.63 1.53 1.43 1.23 1.15 1.00 0.94 0.83 0.78 0.74 0.50 0.45 0.40 0.33 0.30 3.45 3.20 2.85 2.60 2.45 2.10 2.01 1.85 1.64 1.50 1.35 1.28 1.15 1.09 0.95 0.87 0.79 0.73 0.64 0.58 0.55 Notes: 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25Vrms, 0.0Adc +/-20% except for LD1-330-R to LD1-331-R and LD2-470-R to LD2-471-R which is +/-10% 2) RMS current for an approximate ∆T of 40°C. It is recommended that the temperature of the part not exceed 125°C 3) Peak current for an approximate 10% rolloff at 20°C DCR(4) (Ω) (Max.) 1.28 1.72 2.68 3.42 4.70 0.0700 0.0800 0.0900 0.1000 0.1100 0.1200 0.1300 0.1600 0.1800 0.2400 0.2800 0.3700 0.4300 0.4700 0.6400 0.7100 0.9600 1.11 1.26 1.77 1.96 4) DCR limits @ 20°C 5) Part number definition: LDx-yyy-R LDx = product code and size, -yyy = inductance value in µH, R = decimal point. If no R is present, third character = # of zeros -R suffix = RoHS compliant Dimensions - mm Recommended Pad Layout Top View A Bottom View Front View Schematic C xxx B H 1 I Marking G I Component Side Marking: LD1: xxx=inductance value per family chart LD2: "C" logo xxx=inductance value 1207 BU-SB07325 Dimensions A +/-0.3 B +/-0.3 C +/-0.3 G ref H ref I ref 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 Page 2 of 3 Data Sheet 4310 2 Packaging Information 8.0 LD1 Series Supplied in tape and reel packaging, 2000 parts per reel, 13" diameter reel. ACTUAL SIZE LD1 xxx xxx xxx xxx 12.0 User Direction Feed LD2 Series 12.0 Supplied in tape and reel packaging, 1000 parts per reel, 13" diameter reel. ACTUAL SIZE LD2 xxx xxx xxx xxx 16.0 User Direction Feed Inductance Characteristics OCL vs Isat LD2 100 100 90 90 80 80 70 70 OCL (%) OCL (%) OCL vs Isat LD1 60 50 40 60 50 40 30 30 20 20 10 10 0 0 0 10 20 30 40 50 60 70 80 90 100 110 120 % of Isat North America Cooper Bussmann 1225 Broken Sound Parkway NW Suite F Boca Raton, FL 33487-3533 Tel: 1-561-998-4100 Fax: 1-561-241-6640 Toll Free: 1-888-414-2645 Cooper Bussmann P.O. Box 14460 St. Louis, MO 63178-4460 Tel: 1-636-394-2877 Fax: 1-636-527-1607 0 10 20 30 40 50 60 70 80 90 100 110 120 % of Isat Europe Cooper Bussmann Cooper (UK) Limited Burton-on-the-Wolds Leicestershire • LE12 5TH UK Tel: +44 (0) 1509 882 737 Fax: +44 (0) 1509 882 786 Cooper Bussmann Avda. Santa Eulalia, 290 08223 Terrassa, (Barcelona), Spain Tel: +34 937 362 812 +34 937 362 813 Fax: +34 937 362 719 Asia Pacific Cooper Bussmann 1 Jalan Kilang Timor #06-01 Pacific Tech Centre Singapore 159303 Tel: +65 278 6151 Fax: +65 270 4160 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 are devices 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 S t . L o u i s, M O 6 3 1 7 8 w w w. c o o p e r bu s s m a n n . c o m 1207 BU-SB07325 Page 3 of 3 Data Sheet 4310