specifcations subject to change without notice. please check our website for latest information. coupled inductors for critical applications dimensions are in inches mm core material ferrite terminations rohs compliant matte tin over nickel over phos bronze. other terminations available at additional cost. weight 0.76 C 0.87g ambient temperature C40c to +85c with i rms current, +85c to +125c with derated current storage temperature component: C55c to +125c. tape and reel packaging: C55c to +80c winding to winding 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) packaging 250/7 reel; 1000/13 reel plastic tape: 16 mm wide, 0.4 mm thick, 12 mm pocket spacing, 4.9 mm pocket depth tight coupling (k 0.97) and 200 v isolation make the st526pnd series of coupled inductors ideal for use in a variety of circuits including fyback, multi-output buck and sepic. these inductors provide high inductance, high effciency and excellent current handling in a rugged, low cost part. they 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 t ypical sepic schematic v out v out v out au x v in v in l1 l2 q c1 c ++ ?? d document st621-1 revised 02/15/12 7342 coupled inductors 0.295 7,5 max 0.295 7,5 max max dot indicates pin 1 0.150 3,8 0.091 2,3 0.063 1,6 0.028 0,7 0.181 4,6 123 0.110 2,8 0.083 2,1 0.130 3,3 0.043 1,10 1 4 2 3 3 1 2 4 l1 l2 recommended land p attern 1 4 2 3 suggested land pattern 1102 silv er lak e road car y il 60013 phone fa x 800-981-0363 847-639-1508 e-mail we b cps@coilcraft.com www .coilcraft-cps .com ? ? coilcraft, inc. 2012
coupled inductors C st526pnd specifcations subject to change without notice. please check our website for latest information. document st621-2 revised 02/15/12 7342 coupled inductors coupling leakage i sat (a) 6 i rms (a) inductance 2 dcr max 3 srf typ 4 coeffcient l typ 5 10% 20% 30% both one part number 1 20% (h) (ohms) (mhz) typ (h) drop drop drop windings 7 winding 8 st526pnd252mlz 2.5 0.033 55 0.97 0.14 6.0 6.2 6.3 2.17 3.06 st526pnd332mlz 3.3 0.037 43 0.99 0.09 5.2 5.3 5.4 2.05 2.89 st526pnd472mlz 4.7 0.051 35 0.99 0.11 4.1 4.3 4.6 1.74 2.46 st526pnd562mlz 5.6 0.063 32 0.99 0.09 3.9 4.1 4.2 1.57 2.22 st526pnd682mlz 6.8 0.070 30 0.99 0.14 3.7 3.8 3.9 1.49 2.10 st526pnd822mlz 8.2 0.075 27 0.98 0.25 3.3 3.4 3.5 1.44 2.03 st526pnd103mlz 10 0.100 22 0.98 0.30 2.8 2.9 3.0 1.24 1.76 st526pnd123mlz 12 0.120 20 0.98 0.36 2.5 2.6 2.7 1.14 1.61 st526pnd153mlz 15 0.130 18 0.98 0.49 2.2 2.3 2.4 1.09 1.54 st526pnd183mlz 18 0.170 15 >0.99 0.16 2.0 2.2 2.3 0.95 1.35 st526pnd223mlz 22 0.220 13.5 >0.99 0.20 1.9 2.0 2.1 0.84 1.19 st526pnd273mlz 27 0.250 12.0 >0.99 0.20 1.7 1.8 1.9 0.79 1.11 ST526PND333MLZ 33 0.270 11.0 >0.99 0.15 1.5 1.6 1.7 0.76 1.07 st526pnd393mlz 39 0.380 10.0 0.99 0.70 1.3 1.4 1.5 0.64 0.90 st526pnd473mlz 47 0.420 9.5 >0.99 0.30 1.2 1.3 1.4 0.61 0.86 st526pnd563mlz 56 0.460 8.7 >0.99 0.51 1.1 1.2 1.3 0.58 0.82 st526pnd683mlz 68 0.600 7.3 >0.99 0.51 1.0 1.1 1.2 0.51 0.72 st526pnd823mlz 82 0.680 6.2 0.99 1.17 0.90 1.00 1.1 0.48 0.67 st526pnd104mlz 100 0.770 5.5 >0.99 0.96 0.80 0.92 0.98 0.45 0.63 st526pnd124mlz 120 1.03 4.5 >0.99 0.61 0.70 0.80 0.90 0.39 0.55 st526pnd154mlz 150 1.35 4.0 >0.99 0.54 0.65 0.76 0.80 0.34 0.48 st526pnd184mlz 180 1.52 3.8 >0.99 0.75 0.62 0.66 0.73 0.32 0.45 st526pnd224mlz 220 1.72 3.5 >0.99 1.43 0.59 0.62 0.66 0.30 0.42 st526pnd274mlz 270 2.41 3.3 >0.99 1.56 0.55 0.57 0.60 0.25 0.36 st526pnd334mlz 330 2.70 3.0 >0.99 1.65 0.49 0.52 0.54 0.24 0.34 st526pnd394mlz 390 3.05 2.8 0.99 4.73 0.45 0.47 0.50 0.23 0.32 st526pnd474mlz 470 4.00 2.6 0.99 5.50 0.41 0.43 0.46 0.20 0.28 st526pnd564mlz 560 4.43 2.5 >0.99 4.85 0.38 0.40 0.42 0.19 0.26 st526pnd684mlz 680 5.00 2.3 0.99 7.59 0.36 0.37 0.38 0.18 0.25 st526pnd824mlz 820 6.80 2.2 >0.99 8.01 0.30 0.32 0.35 0.15 0.21 st526pnd105mlz 1000 7.80 2.0 >0.99 8.69 0.27 0.29 0.31 0.14 0.20 1. when ordering, please specify termination and testing codes: st526pnd105mlz termination: l = rohs compliant matte tin over nickel over phos bronze. special order: t = rohs tin-silver-copper (95.5/4/0.5) or s = non-rohs tin-lead (63/37). testing: z = cots h = screening per coilcraft cp-sa-10001 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 which the inductance drops the specifed amount from its value without current. it is the sum of the current fowing in both windings. 7. equal current when applied to each winding simultaneously that causes a 40c temperature rise from 25c ambient. see temperature rise calcu - lation. 8. maximum current when applied to one winding that causes a 40c temperature rise from 25c ambient. see temperature rise calculation. 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. temperature rise calculation based on specifed i rms 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. visit www.coilcraft-cps.com/coupledloss. t emperature r ise ( t) = winding po wer loss 129c w t = 129c w (+) dcr ii l1 2 l2 2 winding po wer loss = (+) dcr in w atts (w) ii l1 2 l2 2 example 1. 526pnd-123ml (equal current in each winding) winding po wer loss = (1.14 + 1.14 ) 0.120 = 0.312 w t = 0.312 w 129c w = 40c 22 example 2. (= 1.4 a, winding p -123ml = 0.6 a) 526pnd ii l1 l2 22 ow er loss = (1.4 + 0.6 ) 0.120 = 0.278 w t = 0.278 w 129c w = 36c 1102 silv er lak e road car y il 60013 phone fa x 800-981-0363 847-639-1508 e-mail we b cps@coilcraft.com www .coilcraft-cps .com ? ? coilcraft, inc. 2012
coupled inductors C st526pnd specifcations subject to change without notice. please check our website for latest information. document st621-3 revised 02/15/12 7342 coupled inductors typical l vs current typical l vs frequency irms derating 1 10 100 1000 10000 0.01 0.1 10 1 current (a) inductance (h) 4.7 h 10 h 47 h 100 h 470 h 1000 h 1 10 100 1000 10000 0.1 1 100 10 frequency (mhz) inductance (h) 4.7 h 10 h 47 h 100 h 470 h 1000 h -40 -20 02 04 06 08 0 100 140 120 ambient temperature (c) 120 110 100 90 80 70 60 50 40 30 20 10 0 25c pe r cent of rated rms i 1102 silv er lak e road car y il 60013 phone fa x 800-981-0363 847-639-1508 e-mail we b cps@coilcraft.com www .coilcraft-cps .com ? ? coilcraft, inc. 2012
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