SMD Power Inductors - SESI 18 W • Energy storage, smoothing, filtering • Low profile and light • Highly efficient and reliable • Materials meet UL 94-V0 rating • Suited for IR and vapor reflow soldering • Frequency range up to 1 MHz • Operating temperature range : -40 to +100°C • Weight : 10 grams Electrical Data Part Number SESI 18 L1,2 no load µH I3.6 rated A 5K6 1W 8K2 1W 11K 1W 15K 1W 18K 1W 22K 1W 22K 2W 27K 1W 37K 1W 49K 1W 6.2 8.6 11.5 14.7 18.4 22.5 22.4 27.0 37.0 49.0 9.8 8.3 7.2 6.35 5.7 5.1 5.6 4.7 4.0 3.5 L2.4 I5 Rdc Max at rated I peak max at 25°C µH A mΩ 4.2 5.7 7.7 10.5 12.6 15.4 21.0 18.9 25.9 34.3 13.6 11.5 10 8.9 7.9 7.2 7.3 6.5 5.6 4.8 7.5 9.0 12 15 17 20 24 25 29 45 Part Number SESI 18 L1,2 no load µH I3.6 rated A 56K 1W 70K 1W 86K 1W M10 1W M12 1W M15 1W M18 1W M22 1W M33 1W 56 70 86 103 122 154 177 228 334 3.3 2.9 2.6 2.4 2.2 1.95 1.8 1.6 1.34 L2.4 I5 Rdc Max at rated I peak max at 25°C µH A mΩ 39 49 60 70 84 105 126 154 231 48 65 72 75 115 125 175 210 250 To order, please specify : SESI 18 xxx xW Notes Connections 1. Tolerance ± 10% for L > 10 µH, ± 20% for L ≤ 10µH 2. Inductance at 0.5V, 100kHz 3. Irated (permanent DC) without heatsink ; With heatsink I = Irated x 1.4 4. Typical inductance value at recommended full load 5. Ipeak max= maximum peak value of current at +100°C; L value not guaranteed 6. 40% admissible Iripple over Irated at f=200 kHz I I ripple I peak I rated Packaging (mm) Tape and Reel : 300 pieces per reel of diameter 330 mm t 1/ f Dimensions (mm) Typical values Po Pad Layout 20.0 max F 4.6 4.1 3.7 3.3 3.1 2.7 2.6 2.3 1.9 Bo W So 4 1 SE18 49K Ko Ao : 19.4 Bo : 26.4 Ko : 8.4 Ao P1 F : 20.2 P1 : 24.0 Po : 4.0 W : 44.0 So : 40.4 Tel: 33 3 82 59 13 33 - Fax: 33 3 82 51 00 49 22.0 26.5 max ±0.3 ±0.4 21 28 1 YY/ WW P 5 8 2 x 0.3 3.0 3.81 9 max Specifications may change without notice - Revised 02/04/2003 www.microspire.com