ld series metalized drum core power inductor 1207 bu-sb07325 page 1 of 3 data sheet 4310 part rated ocl (1) i rms (2) i sat (3) dcr (4) number inductance nominal amps amps ( w ) (?) (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: 1) open circuit inductance test parameters: 100khz, 0.25v r ms , 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 d t of 40. it is recommended that the temperature of the part not exceed 125 3) peak current for an approximate 10% rolloff at 20 4) dcr limits @ 20 5) part number definition: ldx-yyy-r ldx = product code and size, -yyy = inductance value in ?, r = decimal point. if no r is present, third character = # of zeros -r suffix = rohs compliant description ? metalized drum core design utilizes board space ? current range from 4.46 amps to 0.52 amps ? inductance range from 1.0? to 470? ? ferrite core material applications ? buck or boost inductor ? noise filtering and output filter chokes ? computers ? power supplies ? test equipment instrumentation environmental data ? storage temperature: -40 to +125? ? operating temperature: -40 to +125?(range is application specific). temperature rise is approximately 40 at rated rms current. ? solder reflow temperature: 260 max. for 10 seconds max. packaging ? supplied in tape and reel packaging, ld1 (2,000), ld2 (1,000) parts per reel
1207 bu-sb07325 page 2 of 3 data sheet 4310 dimensions - mm a xxx top view b ma rking c f ront view bottom view component side recommended pad lay out i i g h schematic 2 1 ma rking: ld1: xxx=inductance value per family chart ld2: "c" logo xxx=inductance value dimensions a b c g h i +/-0.3 +/-0.3 +/-0.3 ref ref 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 part rated ocl ( 1) i rms ( 2) i sat ( 3) dcr ( 4) n umber inductance nominal amps amps ( w ) (?) (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 l d2-100-r 1 0 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: 1) open circuit inductance test parameters: 100khz, 0.25v rms , 0.0adc +/-20% e xcept for ld1-330-r to ld1-331-r and ld2-470-r to ld2-471-r whic h is +/-10% 2) rms current for an approximate d t of 40. it is recommended that the temperature of the part not exceed 125 3) peak curr ent for an approximate 10% rolloff at 20 4) dcr limits @ 20 5) part number definition: ldx-yyy-r ldx = product code and size , -yyy = inductance value in ?, r = decimal point. if no r is present, third character = # of zeros -r suffix = rohs compliant
2007 cooper bussmann st. louis , mo 63178 www.cooperbussmann.com 1207 bu-sb07325 page 3 of 3 data sheet 4310 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 c hange design or construction of any products and to discontinue or limit distribution of any products. cooper bussmann also r eser ves the right to c hange or update , without notice, any tec hnical 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 ar e 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. 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 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 a vda. santa eulalia, 290 08223 terrassa, (barcelona), spain t el: +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 x x x user direction feed 12.0 16.0 x x x x x x x x x ld2 series s upplied in tape and reel packaging, 1 000 parts per reel, 13" diameter reel. packaging information 8.0 1 2.0 x x x x x x x x x x x x user direction feed ld1 series supplied in tape and reel packaging, 2000 parts per reel, 13" diameter reel. actual size ld1 actual size ld2 ocl vs i sat ld1 0 10 20 30 40 50 60 7 0 8 0 9 0 100 0 10 20 30 40 50 60 70 80 90 100 110 120 % of i sat o c l ( % ) ocl vs i sat ld2 0 10 20 30 40 50 60 7 0 8 0 9 0 100 0 10 20 30 40 50 60 70 80 90 100 110 120 % of i sat o c l ( % ) inductance char acteristics
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