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: -40C to +125C Operating temperature: -40C to +125C (range is application specific). Temperature rise is approximately 40C at rated rms current. Solder reflow temperature: 260C 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 1.0H to 470H Ferrite core material (1) (2) (3) (4) Part Rated OCL I I DCR rms sat Number Inductance Nominal Amps Amps () (H) (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 20C 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V , 0.0Adc 5) Part number definition: LDx-yyy-R rms +/-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 H, 2) RMS current for an approximate T of 40C. It is recommended that the temperature of the R = decimal point. If no R is present, third character = of zeros part not exceed 125C -R suffix = RoHS compliant 3) Peak current for an approximate 10% rolloff at 20C 1207 BU-SB07325 Page 1 of 3 Data Sheet 4310(1) (2) (3) (4) Part Rated OCL I I DCR rms sat Number Inductance Nominal Amps Amps () (H) (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 20C 1) Open Circuit Inductance Test Parameters: 100kHz, 0.25V , 0.0Adc 5) Part number definition: LDx-yyy-R rms +/-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 H, 2) RMS current for an approximate T of 40C. It is recommended that the temperature of the R = decimal point. If no R is present, third character = of zeros part not exceed 125C -R suffix = RoHS compliant 3) Peak current for an approximate 10% rolloff at 20C Dimensions - mm Top View Recommended Pad Layout Bottom View Schematic A Front View 1 xxx 2 I G I Marking Component Side Marking: LD1: xxx=inductance value Dimensions A B C G H I +/-0.3 +/-0.3 +/-0.3 ref ref ref per family chart LD1 4.5 4.0 3.2 1.5 4.5 1.75 LD2: logo 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 B C H