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2 / 3 page Coupled Inductors–ST526PND 1102 Silver Lake Road Cary IL 60013 Phone Fax 800-981-0363 847-639-1508 E-mail Web cps@coilcraft.com www.coilcraft-cps.com ® © Coilcraft, Inc. 2012 Specifications subject to change without notice. Please check our website for latest information. Document ST621-2 Revised 02/15/12 7342 COUPLED INDUCTORS Coupling Leakage Isat (A)6 Irms (A) Inductance2 DCR max3 SRF typ4 coefficient L typ5 10% 20% 30% both one Part number1 ±20% (µH) (Ohms) (MHz) typ (µH) drop drop drop windings7 winding8 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 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 calcu- lation. 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. 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 specified Irms Coupled Inductor Core and Winding Loss Calculator This web-based utility allows you to enter frequency, peak-to-peak (ripple) current, and Irms current to predict temperature rise and overall losses, including core loss. Visit www.coilcraft-cps.com/coupledloss. Temperature rise ( t) = Winding power loss × 129°C W D Dt =× 129°C W (+) × DCR II L1 2 L2 2 Winding power loss = (+ ) × DCR in Watts (W) II L1 2 L2 2 Example 1. 526PND-123ML (Equal current in each winding) Winding power loss = (1.14 + 1.14 ) × 0.120 = 0.312 W t = 0.312 W × 129°C W = 40°C 22 D Example 2. (= 1.4 A, Winding p -123ML = 0.6 A) 526PND II L1 L2 22 ower loss = (1.4 + 0.6 ) × 0.120 = 0.278 W t = 0.278 W × 129°C W = 36°C D |
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