document 713-1 the lpr4012 miniature shielded coupled inductors are only 1,1 mm high and 4 mm square. the excellent coupling coeffcient (k = 0.95) makes them ideal for use as fyback transformers in dc-dc converters or as coupled inductors in buck regulators to provide multiple outputs. the wide selection of turns ratios makes them suitable for a variety of voltage step-up and step-down applications. they can also be used in autotransformer applications. the high i sat and low dcr ratings of these low profle parts provide high effciency and excellent current handling in a rugged, low cost design. custom inductance values and turn ratios are available upon request. document 713-1 revised 01/29/10 primary (l1) srf inductance 2 turns dcr max (ohms) typ 3 i sat (a) 4 i rms (a) 5 part number 1 20% (h) ratio l1 l2 (mhz) 10% drop 20% drop 30% drop 20c rise 40c rise LPR4012-202AML_ 2.0 1 : 1.5 0.240 0.325 61.5 1.70 1.73 1.74 1.10 1.45 lpr4012-202bml_ 2.0 1 : 2 0.240 0.480 49.4 1.70 1.73 1.74 1.10 1.45 lpr4012-202dml_ 2.0 1 : 3 0.240 1.15 31.0 1.70 1.73 1.74 1.10 1.45 lpr4012-202lml_ 2.0 1 : 10 0.240 11.62 7.43 1.70 1.73 1.74 1.10 1.45 lpr4012-103bml_ 10.0 1 : 2 0.600 1.55 19.5 0.62 0.64 0.65 0.52 0.70 lpr4012-103dml_ 10.0 1 : 3 0.600 3.71 12.8 0.62 0.64 0.65 0.52 0.70 lpr4012-223bml_ 22.0 1 : 2 1.16 3.65 11.2 0.43 0.45 0.46 0.43 0.57 lpr4012-223dml_ 22.0 1 : 3 1.16 7.08 8.00 0.43 0.45 0.46 0.43 0.57 1. when ordering, please specify termination and packaging codes: lpr4012-223 x m lc termination: l = rohs compliant silver-palladium-platinum-glass frit. special order: t = rohs tin-silver-copper (95.5/4/0.5) or s = non-rohs tin-lead (63/37). packaging: c = 7 machine-ready reel. eia-481 embossed plastic tape (1000 parts per full reel). b = less than full reel. in tape, but not machine ready. to have a leader and trailer added ($25 charge), use code letter d instead. d = 13 machine-ready reel. eia-481 embossed plastic tape. factory order only, not stocked (3500 parts per full reel). 2. inductance is measured at 100 khz, 0.1 vrms, 0 adc on an agilent/hp 4284a lcr meter or equivalent. 3. srf measured using an agilent/hp 4191a or equivalent. when leads are connected in parallel, srf is the same value. 4. dc current applied to l1, at which the inductance drops the specifed amount from its value without current. 5. current applied to l1 that causes the specifed temperature rise from 25c ambient. refer to doc 362 soldering surface mount components before soldering. coupled inductors C lpr4012 for step-up, resonant & flyback applications us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2013 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
coupled inductors C lpr4012 series document 713-2 0.060 1,52 0.0433 0.004 1,10 0,10 dash n umber dot indicates pin 1 0.155 0.003 3,94 0,076 0.155 0.003 3,94 0,076 xxx x 14 23 recommended land p attern 0.174 4,40 0.103 2,606 0.103 2,606 0.049 1,24 0.049 1,24 0.174 4,40 0.031 0,78 45 typ 1 4 2 3 2 1 4 3 l1 l2 core material ferrite weight 54 C 64 mg terminations rohs compliant silver-palladium-platinum-glass frit. other terminations available at additional cost. ambient temperature C40c to +85c with i rms current, +85c to +125c with derated current storage temperature component: C40c to +125c. tape and reel packaging: C40c to +80c winding to winding isolation 100 v resistance to soldering heat max three 40 second refows at +260c, parts cooled to room temperature between cycles moisture sensitivity level (msl) 1 (unlimited foor life at <30c / 85% relative humidity) mean time between failures (mtbf) 26,315,789 hours failures in time (fit) 38 per one billion hours packaging 1000/7 ff reel; 3500/13 f reel plastic tape: 12 mm wide, 0.25 mm thick, 8 mm pocket spacing, 1.32 mm pocket depth recommended pick and place nozzle od: 4 mm; id: 2 mm pcb washing only pure water or alcohol recommended dimensions are in inches mm -40 -20 02 04 06 08 0 100 140 120 a mbient t emperatur e (c) pe r cent of r ated c urrent 120 110 100 90 80 70 60 50 40 30 20 10 0 i sat i rm s 25 c current derating l1 l1 l2 l2 + + + + + ? ? ? ? ? d d d c c pwm c c sw t ypical fl ybac k con ver ter t ypical buc k con ver ter with auxiliary output v out v out v out au x v in v in document 713-2 revised 01/29/10 us uk t aiwan china singapore +1-847-639-6400 sales@coilcraft.com +44-1236-730595 sales@coilcraft-eur ope.com +886-2-2264 3646 sales@coilcraft.com.tw +86-21-6218 8074 sales@coilcraft.com.cn + 65-6484 8412 sales@coilcraft.com.sg ? coilcraft inc. 2013 this pr oduct may not be used in medical or high risk applications without prior coilcraft appr oval. specification subject to change without notice. please check web site for latest infor mation.
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