PL IA NT CO M *R oH S Features Applications Multiple applications: parallel, series, SEPIC topology dual-inductor and transformer Magnetically shielded, low radiation Inductance range: 0.33 to 4000 H Rated current up to 6.19 A RoHS compliant* 471 Power supplies for: - Communication equipment - Notebooks, desktop computers, servers - LCDs, flat panels, backlights - Camcorders, HDTVs, car audio systems SRF0703 Series - Dual-Winding Shielded Power Inductors Electrical Specifications @ 25 C General Specifications Parallel Rating Bourns Part No. Inductance @ 100 KHz L (H) 20 % DCR () Max. Irms (A) SRF0703-R33M SRF0703-1R0M SRF0703-1R5M SRF0703-2R2M SRF0703-3R3M SRF0703-4R7M SRF0703-6R8M SRF0703-8R2M SRF0703-100M SRF0703-150M SRF0703-220M SRF0703-330M SRF0703-470M SRF0703-680M SRF0703-820M SRF0703-101M SRF0703-151M SRF0703-221M SRF0703-331M SRF0703-471M SRF0703-681M SRF0703-821M SRF0703-102M 0.33 1.0 1.5 2.2 3.3 4.7 6.8 8.2 10 15 22 33 47 68 82 100 150 220 330 470 680 820 1000 0.0092 0.0135 0.0191 0.0217 0.0316 0.0406 0.0658 0.0772 0.0826 0.119 0.15 0.24 0.338 0.507 0.61 0.715 0.986 1.48 2.16 2.82 3.96 5.01 6.11 6.19 5.25 4.64 4.11 3.31 3.09 2.55 2.19 2.08 1.83 1.62 1.31 1.08 0.89 0.86 0.73 0.58 0.52 0.42 0.35 0.29 0.27 0.26 Series Rating Isat (A) Inductance @ 100 KHz L (H) 20 % DCR () Max. Irms (A) Isat (A) 14.4 7.97 6.52 5.52 4.22 3.78 3.12 2.66 2.47 2.05 1.67 1.35 1.14 0.96 0.89 0.79 0.65 0.53 0.44 0.37 0.31 0.28 0.25 1.32 4 6 8.8 13.2 18.8 27.2 32.8 40 60 88 132 188 272 328 400 600 880 1320 1880 2720 3280 4000 0.04 0.072 0.11 0.132 0.182 0.242 0.285 0.306 0.342 0.47 0.62 1.0 1.28 1.92 2.28 2.64 3.63 5.5 8.25 11.22 16.17 20.07 24.42 3.1 2.63 2.32 2.06 1.66 1.55 1.28 1.1 1.04 0.916 0.811 0.653 0.542 0.444 0.43 0.367 0.289 0.26 0.211 0.173 0.143 0.134 0.128 7.18 3.99 3.26 2.76 2.11 1.89 1.56 1.33 1.24 1.03 0.83 0.68 0.57 0.48 0.44 0.39 0.32 0.27 0.22 0.18 0.15 0.14 0.13 Test Voltage ..................................0.25 V Hi-pot .................500 Vrms, 3 mA, 3 sec. Reflow Soldering .. 230 C; 50 sec. max. Operating Temperature ................................. -40 C to +125 C (Temperature rise included) Storage Temperature .. -40 C to +125 C Resistance to Solder Heat ...............................+260 C for 10 sec. Materials Core ..............................................Ferrite Wire ............................Enameled copper Base ................................................ LCP Adhesive .............................. Epoxy resin Terminal ..............................................Sn Rated Current ............ Inductance drops 30 % at Isat Temperature Rise .....40 C at rated Irms Packaging ..... 1500 pcs. per 13-inch reel How to Order SRF0703 - 100M Model Value Code (see table) Product Dimensions 7.6 MAX. (.299) Electrical Schematic 1 2 N1 1 N2 3 2 N1 4 1 N2 3 2 N1 4 7.6 (.299) MAX. N2 4 3 PARALLEL SERIES 3.4 0.2 (.134 .008) Recommended Layout 0.4 (.016) 2 3.0 (.118) 0.4 (.016) 1 2 3.0 (.118) 1 7.9 (.311) 3 7.9 (.311) 4 1.4 (.055) 3 4 1.4 (.055) DUAL INDUCTOR MODE 2.9 TYP. (.114) 1 2 4 3 2.7 (.106) TYP. 1.0 TYP. (.039) SERIES MODE *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. DIMENSIONS: MM (INCHES) SRF0504 Series- Dual-Winding - Line Filter Shielded Power Inductors SRF0703 Series Packaging Specifications 330 DIA. (12.99) 2.0 0.5 (.079 .020) 21.0 0.8 (.827 .031) 22.4 (.882) 13.0 0.5 (.512 .020) DIA. 50.0 -0 (1.97 -0) 13.0 0.5 DIA. (.512 .020) 18 +0 (.709 +0) 16.0 (.630) 16.0 (.630) END 4.0 (.157) NO COMPONENT COMPONENTS START NO COMPONENT 400 (15.75) 200 (7.87) USER DIRECTION OF FEED QTY: 1500 PCS. PER REEL DIMENSIONS: MM (INCHES) Asia-Pacific: Tel: +886-2 2562-4117 * Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 * Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 * Fax: +1-951 781-5700 www.bourns.com REV. 05/12 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.