dimensions are in inches mm 0.079 2,00 0.138 3,5 max dash n umber inter nal code dot indicates pin 1 0.236 0.003 6,0 0,08 0.236 0.003 6,0 0,08 xxx x 14 23 recommended land p attern 0.260 6,60 0.167 4,25 0.167 4,25 0.079 2,00 0.079 2,00 0.260 6,60 0.047 1,20 45 typ 1 4 2 3 tight coupling (k 0.97) makes the st512pjd series of coupled inductors ideal for use in a variety of circuits including fyback, multi-output buck and sepic. these coupled miniature shielded inductors are 3.5 mm high and 6.0 mm square. they provide high inductance, high effciency and excellent current handling in low cost part. they can be used as two single inductors connected in series or parallel, as a common mode choke or as a 1 : 1 transformer. 2 1 4 3 l1 l2 6235 coupled induct ors core material ferrite weight 420 C 480 mg t erminations rohs compliant, halogen free silver-palladium-plati - num-glass frit. other terminations available at additional cost. ambient temperature C40c to +85c with i rms current, +85c to +125c with derated current s torage temperature component: C55c to +125c. tape and reel packaging: C55c 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 s ensitivity level (msl) 1 (unlimited foor life at <30c / 85% relative humidity) packaging 750 per 7 reel plastic tape: 12 mm wide, 0.32 mm thick, 8 mm pocket spacing, 3.1 mm pocket depth r ecommended pick and place nozzle od: 5 mm; id: 2.5 mm coupled inductors for critical applications 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 s uggested land pattern document st833-1 revised 11/07/12 ? ? coilcraft, inc. 2012 1102 silv er lak e road car y, il 60013 phone 800-981-0363 fa x 847-639-1508 email c ps@coilcraft.com www . coilcraft-cps . com this pr oduct may not be used in medical or hig h risk applications without prior coilcraft appr oval. specifications subject to change without notice. please check our web site for latest infor mation.
document st833-2 revised 11/07/12 st512pjd series coupled inductors 6235 coupled induct ors dc r srf coupling leakage 5 isat (a) 6 irms (a) inductance 2 max 3 typ 4 coeffcient l typ 10% 20% 30% both one part number 1 20% (h) (ohms) (mhz) typ (h) drop drop drop windings 7 winding 8 st512pjd682mlz 6.8 0.108 31 0.99 0.10 2.80 3.00 3.12 1.60 2.26 ST512PJD103MLZ 10 0.140 26 0.99 0.12 2.50 2.70 2.80 1.40 1.98 st512pjd223mlz 22 0.300 15 >0.99 0.15 1.50 1.67 1.73 0.85 1.20 st512pjd473mlz 47 0.620 9.7 >0.99 0.21 0.90 0.98 0.99 0.60 0.85 st512pjd474mlz 470 3.50 3.0 >0.99 0.61 0.18 0.22 0.23 0.25 0.35 st512pjd105mlz 1000 7.00 1.9 >0.99 1.05 0.12 0.14 0.15 0.15 0.21 st512pjd155mlz 1500 10.8 1.5 >0.99 1.70 0.10 0.12 0.13 0.14 0.20 st512pjd205mlz 2000 16.0 1.3 >0.99 2.10 0.08 0.11 0.12 0.11 0.16 t emperature rise calculation based on specifed i rms 1. when ordering, please specify termination and testing code: st512pjd105mlz t ermination: 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). t esting: z = cots h = screening per coilcraft cpsa-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 calculation. 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. t emperature r ise = winding po wer loss 92.5c w winding po wer loss = (+) dcr in w atts (w) ii l1 2 l2 2 equal current in each winding (0.80 a): winding po wer loss = (0.80 + 0.80 ) 0.30 = 0.384 w t emperature r ise = 0.384 w 92.5c w = 35.5c 22 unequal current (= 1.1 a, = 0.45 a) ii l1 l2 : winding po wer loss = (1.1 + 0.45 ) 0.30 = 0.424 w t emperature r ise = 0.424 w 92.5c w = 39.2c 22 examples f or st512pjd223mlz: ? ? coilcraft, inc. 2012 1102 silv er lak e road car y, il 60013 phone 800-981-0363 fa x 847-639-1508 email c ps@coilcraft.com www . coilcraft-cps . com this pr oduct may not be used in medical or hig h risk applications without prior coilcraft appr oval. specifications subject to change without notice. please check our web site for latest infor mation.
document st833-3 revised 11/07/12 st512pjd series coupled inductors 6235 coupled induct ors l vs current typical current derating l vs frequency 1 10 100 1000 10000 inductance (h) 0.1 1 100 10 frequenc y (mhz) 1000 h 1500 h 2000 h 6.8 h 47 h 470 h 22 h 10 h 1000 h 6.8 h 47 h 22 h 10 h 2000 h 1500 h 470 h 1 10 100 1000 10000 inductance (h) 0.01 0.1 10 1 current (a) -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 ? ? coilcraft, inc. 2012 1102 silv er lak e road car y, il 60013 phone 800-981-0363 fa x 847-639-1508 email c ps@coilcraft.com www . coilcraft-cps . com this pr oduct may not be used in medical or hig h risk applications without prior coilcraft appr oval. specifications subject to change without notice. please check our web site for latest infor mation.
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