SMT POWER INDUCTORS Toroid - Bobcat Series Height: 5.5mm Max Footprint: 12.7mm x 12.7mm Max Current Rating: up to 3.8A Inductance Range: 9.4µH to 439µH Electrical Specifications @ 25°C — Operating Temperature -40°C to +130°C 11 Part 9,10 Number Inductance @ Irated (µH) Irated (A ) P0144 P0145 P0146 P0147 P0148 P0149 P0150 P0151 P0152 P0153 9.4 13.3 23 50 75 90 137 200 305 439 3.80 3.13 2.43 1.65 1.35 1.23 0.99 0.81 0.65 0.53 DCR (mΩ) TYP MAX 27 40 65 121 181 246 387 585 845 1322 31 46 75 139 208 283 445 673 972 1520 NOTES: 1. The reference inductance at rated DC current is a typical value. 2. Temperature rise is 50°C in typical buck or boost circuits at 250kHz and with the reference ET applied to the inductor. 3. Total loss in the inductor is 380mW for 50°C temperature rise above ambient. 4. To estimate temperature rise in a given application, determine copper and core losses, divide by 380 and multiply by 50. 5. For the copper loss (mW), calculate IDC2 X RN. 6. For core loss (mW), using frequency (f in Hertz) and operating flux density (B in Gauss), calculate 6.11 x 10-18 x B2.7 x f2.04. 7. For flux density (B in Gauss), calculate ET (V-µsec) for the application, divide by ET100 from the table, and multiply by 100. ET (V-µsec) Inductance @ 0ADC (µH ±20%) 100 Gauss ET100 (V-µsec) 1 Amp DC H1 (Orsted) 15.2 18.8 24.3 37.0 44.3 49.2 59.4 71.3 85.8 99.6 10.4 14.6 25 56 83 100 152 220 331 472 2.65 3.13 4.10 6.15 7.47 8.19 10.12 12.17 14.94 17.83 11.95 14.12 18.46 27.69 33.67 36.93 45.61 54.85 67.34 80.37 8. Limit the DC bias (H) to 46 orsteds. Calculate H by multiplying H1 from the table by IDC of the application. 9. Optional Tape & Reel packaging can be ordered by adding a "T" suffix to the part number (i.e. P0144 becomes P0144T). Pulse complies to industry standard tape and reel specification EIA481. 10. To order RoHS compliant part, add the suffix “NL” to the part number (i.e. P0144 becomes P0144NL and P0144T becomes P0144NLT). 11. The temperature of the component (ambient plus temperature rise) must be within the stated operating temperature range. Mechanical Schematic 2X .060 1,52 .500 MAX 12,70 1 .470 11,94 .400 10,16 R Suggested Pad Layout .215 MAX 5,46 .390 9,91 .500 MAX 12,70 2 .220 5,59 .005/0,13 4 SURFACES Weight . . . . . . . . 1.5 grams Tape & Reel . . . . . . 500/reel Tube . . . . . . . . . . . . 40/tube Dimensions: Inches mm Unless otherwise specified, all tolerances are ± .010 0,25 .510 12,95 TAPE & REEL LAYOUT .945 ± .012 24,00 ± 0,30 .510 12,95 .630 16,00 USER DIRECTION OF FEED USA 858 674 8100 • UK 44 1483 401 700 • France 33 3 84 35 04 04 • Singapore 65 6287 8998 • Shanghai 86 21 54643211 / 2 • China 86 769 5538070 • Taiwan 886 3 4641811 www.pulseeng.com 70 SPM2006 (3/06)