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© Coilcraft, Inc. 2012

1102 Silver Lake Road

Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email cps@coilcraft.com www.coilcraft-cps.com This product may not be used in medicalor high risk applicationswithoutprior Coilcraftapproval. Specificationssubjectto change withoutnotice. Please check our web site for latest information. Dimensions are in inches mm 0.079 2,00 0.138 3,5 max Dash number Internal code Dot indicates pin 1 0.236 ±0.003 6,0 ±0,08 0.236 ±0.003 6,0 ±0,08 XXXX Recommended Land Pattern 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 flyback, 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 efficiency 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. 1 4 L1 L2

6235 COUPLED InDUCtOrs

Weight 420 – 480 mg terminations RoHS compliant, halogen free silver-palladium-plati- num-glass frit. Other terminations available at additional cost. Ambient temperature –40°C to +85°C with Irms current, +85°C to +125°C with derated current storage temperature Component: –55°C to +125°C. Tape and reel packaging: –55°C to +80°C Winding to winding isolation 100 V resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture sensitivity Level (MsL) 1 (unlimited floor life at <30°C / 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 recommended pick and place nozzle OD: 5 mm; ID: ≤ 2.5 mm Coupled Inductors for Critical Applications L1 L2 + + D C C Typical Flyback Converter VOUT VIN SW D D C C SW Typical Buck Converter with auxiliary output Typical SEPIC schematic VOUT VOUT VOUTAUX VIN VIN L2Q C D suggested Land Pattern Document ST833-1 Revised 11/07/12

© Coilcraft, Inc. 2012 Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email cps@coilcraft.com www.coilcraft-cps.com This product may not be used in medicalor high risk applicationswithoutprior Coilcraftapproval. Specificationssubjectto change withoutnotice. Please check our web site for latest information. Document ST833-2 Revised 11/07/12 ST512PJD Series Coupled Inductors DCr srF Coupling Leakage5 Isat (A)6 Irms (A) Inductance2 max3 typ4 coefficient L typ 10% 20% 30% both one Part number1 ±20% (µH) (Ohms) (MHz) typ (µH) drop drop drop windings7 winding8 temperature rise calculation based on specified Irms1. When ordering, please specify termination and testing code: st512PJD105MLZ 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). testing: 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 specified amount from its value without current. It is the sum of the current flowing in both windings. 7. Equal current when applied to each winding simultaneously that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation. 8. Maximum current when applied to one winding that causes a 40°C temperature rise from 25°C ambient. See temperature rise calculation. 9. Electrical specifications at 25°C. Temperature rise = Winding power loss × 92.5°C W Winding power loss = (+) × DCR in Watts (W)IIL1 Equal current in each winding (0.80 A): Winding power loss = (0.80 +0.80 ) × 0.30 = 0.384 W Temperature rise = 0.384 W × 92.5°C W = 35.5°C Unequal current (= 1.1 A, = 0.45 A)IIL1 L2 : Winding power loss = (1.1 +0.45 ) × 0.30 = 0.424 W Temperature rise = 0.424 W × 92.5°C W = 39.2°C Examples for ST512PJD223MLZ:

© Coilcraft, Inc. 2012 Cary, IL 60013 Phone 800-981-0363 Fax 847-639-1508 Email cps@coilcraft.com www.coilcraft-cps.com This product may not be used in medicalor high risk applicationswithoutprior Coilcraftapproval. Specificationssubjectto change withoutnotice. Please check our web site for latest information. Document ST833-3 Revised 11/07/12 ST512PJD Series Coupled Inductors (µH) 0.1 1 10010 Frequency (MHz) 1000 µH 1500 µH2000 µH 6.8 µH 47 µH 470 µH 22 µH 10 µH 1000 µH 6.8 µH 47 µH 22 µH 10 µH 2000 µH 1500 µH 470 µH 100 1000 10000 Inductance (µH) 0.01 0.1 101 Current (A) -40 -20 02 04 06 08 0 100 140120 Ambient temperature (°C) Pe rcent of rated c urrent 120 110 100 Isat Irms 25° C