Document 327-1 SMT Power Inductors - MLC Series The MLC series of flat wire power inductors offers extremely low DC resistance and very high saturation current ratings (up to 37 Amps). Its compact size and magnetic shielding make it suitable for use in high-density boards. These inductors are ideal for power supply applications where high current handling is essential. They are perfect for use in VRD/VRM controllers. Inductance is unaffected by ambient temperature up to +135C. The materials used in the unique design eliminate all thermal aging issues. Custom inductance values are also possible. Coilcraft Designer's Kit C187 contains samples of all values shown. To order, contact Coilcraft or purchase online at http://order.coilcraft.com. Part number1 L2 DCR Height 20% 5% SRF Isat 3 Irms 4 max (H) (mOhm) (MHz) (A) (A) (mm) 10.5 mm x 12.0 mm MLC1265-361MX_ MLC1260-401MX_ MLC1255-421MX_ MLC1240-451MX_ body size 0.36 0.930 0.40 0.930 0.42 0.930 0.45 1.73 234 228 219 198 37.0 35.5 33.0 25.0 19.0 19.8 19.8 15.7 6.5 6.1 5.6 4.1 MLC1265-701MX_ MLC1250-801MX_ MLC1240-901MX_ MLC1260-122MX_ MLC1255-122MX_ 0.70 0.80 0.90 1.20 1.20 1.24 2.35 2.57 2.38 2.38 134 151 108 93 85 26.0 24.5 21.0 21.0 20.0 17.3 14.8 13.4 14.7 14.3 6.5 5.1 4.1 6.1 5.6 MLC1250-132MX_ MLC1245-152MX_ MLC1260-172MX_ MLC1245-402MX_ 1.30 1.50 1.70 4.00 2.38 4.08 2.84 8.18 76 79 72 46 20.0 10.9 15.0 11.5 17.0 13.6 13.0 8.8 5.1 4.6 6.1 4.6 13.2 mm x 15.0 mm MLC1565-501MX_ MLC1555-551MX_ MLC1560-901MX_ MLC1538-102MX_ body size 0.50 0.864 0.55 1.34 0.90 1.72 1.00 3.46 169 165 101 81 36.5 32.0 27.0 24.5 19.7 18.2 13.0 12.4 6.5 5.6 6.0 3.9 MLC1550-102MX_ MLC1538-152MX_ MLC1550-252MX_ MLC1555-302MX_ MLC1550-452MX_ 1.00 1.50 2.50 3.00 4.50 76 50 45 42 36 23.0 21.0 16.5 14.0 11.5 13.7 10.6 11.4 12.2 9.5 5.2 3.9 5.2 5.6 5.2 1.72 4.36 3.43 4.06 7.13 1. When ordering, please specify packaging code: MLC1550-452MXC Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic tape. B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. D = 13 machine-ready reel. EIA-481 embossed plastic tape. 2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD-A fixture in an Agilent/HP 4284A LCR meter. 3. DC current at which the inductance drops 20% (typ) from its value without current. 4. Average current for a 40C (max) rise above 25C ambient. 5. Operating temperature range -40C to +135C. 6. Electrical specifications at 25C. Specifications subject to change without notice. Please check our website for latest information. Document 327-1 (c) Coilcraft, Inc. 2006 Revised 11/11/05 Document 327-2 SMT Power Inductors - MLC Series Typical L vs Current Typical L vs Frequency 10 10 MLC1550-452 Inductance (H) Inductance (H) MLC1550-452 MLC1538-152 MLC1538-102 1 MLC1555-551 MLC1265-361 MLC1538-152 MLC1538-102 1 MLC1555-551 MLC1265-361 0.1 0.1 0.01 1 0.1 0.1 10 1 10 100 Current (A) Frequency (MHz) Inductance vs current is unaffected by ambient temperature up to 135C. Dimensions Temperature Rise vs Current B C Recommended Land Pattern H D 70 60 50 40 M LC 15 55 -5 M 51 LC 12 65 -3 61 XXX A ML C1 550 -45 2 ML C1 538 -15 ML 2 C1 538 -10 2 Temperature rise (from 25C) 80 30 20 10 0 0 F E 5 10 15 20 25 30 Current (A rms) G F Terminations: Tin/silver over copper Body Size A max B max C max D E F G H Tape and Reel 1240 1245 1250 1255 1260 1265 12.0 12.0 12.0 12.0 12.0 12.0 10.5 10.5 10.5 10.5 10.5 10.5 4.1 4.6 5.1 5.6 6.1 6.5 1.8 1.8 1.8 1.8 1.8 1.8 2.3 2.3 2.3 2.3 2.3 2.3 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 3.5 3.5 3.5 3.5 3.5 3.5 MLC1240 MLC1245 MLC1250 MLC1255 MLC1260 MLC1265 250/7 200/7 200/7 200/7 175/7 150/7 reel; reel; reel; reel; reel; reel; 900/13 800/13 700/13 700/13 600/13 600/13 reel reel reel reel reel reel 24 24 24 24 24 24 mm mm mm mm mm mm tape tape tape tape tape tape width width width width width width 1538 1550 1555 1560 1565 15.0 15.0 15.0 15.0 15.0 13.2 13.2 13.2 13.2 13.2 3.9 5.2 5.6 6.0 6.5 2.4 2.4 2.4 2.4 2.4 3.3 3.3 3.3 3.3 3.3 5.0 5.0 5.0 5.0 5.0 5.4 5.4 5.4 5.4 5.4 4.1 4.1 4.1 4.1 4.1 MLC1538 MLC1550 MLC1555 MLC1560 MLC1565 200/7 150/7 150/7 150/7 125/7 reel; reel; reel; reel; reel; 800/13 600/13 500/13 500/13 500/13 reel reel reel reel reel 24 24 24 24 24 mm mm mm mm mm tape tape tape tape tape width width width width width All dimensions are in mm. For packaging data see Tape and Reel Specifications section. Specifications subject to change without notice. Please check our website for latest information. Document 327-2 (c) Coilcraft, Inc. 2006 Revised 01/27/05