document 1190-1 document 1190-1 revised 11/09/15 coupled inductors msd1048 dimensions are in inches mm for flyback, sepic, zeta and other applications ? tight coupling (k 0.97) ? 200 v isolation ? ideal for use in a variety of circuits including fyback, multi-output buck, sepic, ? uk and zeta. ? high effciency and excellent current handling ? can also be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer. l1 l2 + + ? ? d c c t ypical fl ybac k co n ver ter v out v in sw l1 l2 ++ + ?? ? d d c c sw t ypical buc k con ver ter with auxiliary output v out v out au x v in t ypical zeta schematic v out v in l1 l2 q c1 cc ++ ?? d t ypical sepic schematic v out v in l1 l2 q c1 c c ++ ?? d recommended land patter n 0.130 3,3 0.213 5,4 0.094 2,4 0.049 1.25 1 4 2 3 3 1 2 4 l1 l2 123 x 0.118 3,0 0.039 1,0 0.228 5,8 0.079 2,0 0.406 10,3 max 0.406 10,3 max dash n umber inter nal code 1 4 2 3 0.189 0.008 4,8 0,2 dot indicates pin1 * fo r optional tin-lead and tin-silv er-copper ter minations , dimensions are fo r the mounted par t. dimensions bef ore mounting ca nb e an additional 0.012 inch (0,3 mm). *
document 1190-2 revised 11/09/15 document 1190-2 coupling leakage i rms (a) part inductance 2 dcr max 3 srf typ 4 coeffcient inductance 5 i sat 6 both one number 1 (h) (ohms) (mhz) typ typ (h) (a) windings 7 winding 8 msd1048-222ne_ 2.2 30% 0.019 65 0.97 0.30 9.1 2.4 3.4 msd1048-103me_ 10 20% 0.053 27 >0.99 0.40 4.3 1.5 2.1 msd1048-223me_ 22 20% 0.098 17 >0.99 0.45 2.9 1.3 1.9 msd1048-473me_ 47 20% 0.208 12 >0.99 0.50 2.0 1.1 1.6 msd1048-683me_ 68 20% 0.297 9.0 >0.99 0.55 1.7 1.0 1.4 msd1048-104me_ 100 20% 0.387 7.3 >0.99 0.80 1.3 0.85 1.2 msd1048-224ke_ 220 10% 0.840 4.8 >0.99 1.0 0.90 0.62 0.87 1. when ordering, please specify termination and packaging codes: msd1048-224k ed termination: e = rohs compliant matte tin over nickel over phos bronze. special order: q = rohs tin-silver-copper (95.5/4/0.5) or p = non-rohs tin-lead (63/37). packaging: d = 13 machine-ready reel. eia-481 embossed plastic tape. (800 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. 2. inductance shown for each winding, measured at 100 khz, 0.1 vrms, 0 adc on an agilent/hp 4284a lcr meter or equivalent. when leads are connected in parallel, inductance is the same value. when leads are connected in series, inductance is four times the value. 3. dcr is for each winding. when leads are connected in parallel, dcr is half the value. when leads are connected in series, dcr is twice the value. 4. srf measured using an agilent/hp 4191a or equivalent. when leads are connected in parallel, srf is the same value. 5. leakage inductance is for l1 and is measured with l2 shorted. 6. dc current at 25c that causes a 30% (typ) inductance drop from its value without current. it is the sum of the current fowing in both wind - ings. 7. equal current when applied to each winding simultaneously that causes a 40c temperature rise from 25c ambient. this information is for refer - ence only and does not represent absolute maximum ratings. to predict temperature rise go to online calculator . 8. maximum current when applied to one winding that causes a 40c tem - perature rise from 25c ambient. this information is for reference only and does not represent absolute maximum ratings. to predict tempera - ture rise go to online calculator . 9. electrical specifcations at 25c. refer to doc 639 selecting coupled inductors for sepic applications. refer to doc 362 soldering surface mount components before soldering. coupled inductor core and winding loss calculator this web-based utility allows you to enter frequency, peak-to-peak (ripple) current, and i rms current to predict temperature rise and overall losses, including core loss. go to online calculator . core material ferrite core and winding loss go to online calculator terminations rohs compliant matte tin over nickel over phos bronze. other terminations available at additional cost. weight: 1.5C 1.8 g ambient temperature C40c to +85c with (40c rise) i rms current. maximum part temperature +125c (ambient + temp rise). storage temperature component: C40c to +125c. tape and reel packaging: C40c to +80c winding-to-winding and winding-to-core isolation 200 vrms 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) failures in time (fit) / mean time between failures (mtbf) 38 per billion hours / 26,315,789 hours, calculated per telcordia sr-332 packaging 800/13 reel plastic tape: 24 mm wide, 0.35 mm thick, 16 mm pocket spacing, 5.1 mm pocket depth pcb washing tested to mil-std-202 method 215 plus an additional aqueous wash. see doc787_pcb_washing.pdf . coupled inductors C msd1048 series
document 1190-3 revised 11/09/15 document 1190-3 l vs frequency l vs current 10 h 22 h 47 h 68 h 100 h 220 h 2.2 h 1 10 100 1000 0.1 1 100 10 inductance (h) frequenc y (mhz) 10 h 22 h 4 h 8 h 100 h 220 h 22 h 1 10 100 1000 001 01 10 1 inductance (h) current (a) coupled inductors C msd1048 series
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