Features Applications n Multiple applications: parallel, series, n SEPIC topology dual-inductor and transformer n Power supplies for: n Magnetically shielded, low radiation - Communication equipment 471 n Inductance range: 0.33 to 4000 μH - Notebooks, desktop computers, servers n Rated current up to 6.19 A - LCDs, flat panels, backlights n RoHS compliant* - Camcorders, HDTVs SRF0703 Series - Dual-Winding Shielded Power Inductors Electrical Specifications @ 25 °C General Specifications Parallel R7a.6tinMgAX. Series Rating Test Voltage ..................................0.25 V (.299) Hi-pot ................500 Vrms, 3 mA, 3 sec. Inductance DCR Inductance DCR Reflow Soldering ..230 °C; 50 sec. max. @ 100 KHz (W) Irms Isat @ 100 KHz (W) Irms Isat Bourns Part No. L (μH) ±20 % Max. (A) (A) L (μH) ±20 % Max. (A) (A) Operating Temperature .................................-40 °C to +125 °C SRF0703-R33M 0.33 0.0092 6.19 14.47.6 1.34 0.04 3.1 7.18 (.299) (Temperature rise included) SRF0703-1R0M 1.0 0.0135 5.25 7.97 3.86 0.072 2.63 3.99 MAX. Storage Temperature ..-40 °C to +125 °C SRF0703-1R5M 1.5 0.0191 4.64 6.52 5.83 0.11 2.32 3.26 Resistance to Solder Heat SRF0703-2R2M 2.2 0.0217 4.11 5.52 8.13 0.132 2.06 2.76 ...............................+260 °C for 10 sec. SRF0703-3R3M 3.3 0.0316 3.31 4.22 13.60 0.182 1.66 2.11 Moisture Sensitivity Level ......................1 SRF0703-4R7M 4.7 0.0406 3.09 3.78 17.10 0.242 1.55 1.89 ESD Classification (HBM) ..................N/A SRF0703-6R8M 6.8 0.0658 2.55 3.12 25.50 0.285 1.28 1.56 SRF0703-8R2M 8.2 0.0772 2.19 2.663.4 ± 0.234.10 0.306 1.1 1.33 Materials SRF0703-100M 10 0.0826 2.08 2.47(.134 ± .00389).60 0.342 1.04 1.24 Core ..............................................Ferrite SRF0703-150M 15 0.119 1.83 2.05 59.60 0.47 0.916 1.03 Wire ...........................Enameled copper SRF0703-220M 22 0.15 1.62 1.67 89.50 0.62 0.811 0.83 Base ................................................LCP SRF0703-330M 33 0.24 1.31 2.19.3T5YP. 140.50 1.0 0.653 0.68 Adhesive ..............................Epoxy resin (.114) SRF0703-470M 47 0.3384 13.08 1.14 194.20 1.28 0.542 0.57 Terminal ...................................Cu/Ni/Sn SRF0703-680M 68 0.507 0.89 0.96 289.30 1.92 0.444 0.48 Rated Current ...........Inductance drops 30 % at Isat SRF0703-820M 82 0.61 0.86 0.89 324.70 2.28 0.43 0.44 Temperature Rise ....40 °C at rated Irms SRF0703-101M 1002.7 0.715 0.73 0.79 397.60 2.64 0.367 0.39 Packaging .....1500 pcs. per 13-inch reel SRF0703-151M 15(.0106) 0.986 0.58 0.65 608.20 3.63 0.289 0.32 TYP. SRF0703-221M 220 1.48 0.52 0.53 922.60 5.5 0.26 0.27 How to Order SRF0703-331M 330 2.16 0.42 0.44 1335.00 8.25 0.211 0.22 SRF0703-471M 470 2.82 0.35 0.37 1859.00 11.22 0.173 0.18 SRF0703 - 100M 1 2 SRF0703-681M 680 3.96 0.29 1.00.31 2930.00 16.17 0.143 0.15 Model SRF0703-821M 820 5.01 0.27(.0390).T2Y8P. 3559.00 20.07 0.134 0.14 Value Code (see table) SRF0703-102M 1000 6.11 0.26 0.25 4120.00 24.42 0.128 0.13 Product Dimensions Recommended Layout 7.6 MAX. (.299) 0.4 3.0 0.4 3.0 (.016) (.118) (.016) (.118) 1 2 1 2 7.6 (.299) MAX. 7.9 7.9 (.311) (.311) 4 3 4 3 1.4 1.4 (.055) (.055) DUAL INDUCTOR MODE SERIES MODE 3.4 ± 0.2 (.134 ± .008) 2.9 TYP. (.114) 4 3 1 2 1 2 1 2 2.7 (.106) TYP. N1 WARNING N C2ancer and RepNro1ductive Harm -N w2ww.P65Warnings.cNa.1gov N2 *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. 1 2 1.0 Specifications are subject to change without notice. (.039)TYP. Users should verify actual device performance in their specific applications. The p3roducts described herein4 and this docum3ent are subject to specifi4c legal disclaim3ers as set forth on the last pag4e o f DIMENSIONS: MM this document, and at www.bourns.com/docs/legal/disclaimer.pdf. (INCHES) PARALLEL SERIES 0.4 3.0 0.4 3.0 (.016) (.118) (.016) (.118) 1 2 1 2 7.9 7.9 (.311) (.311) 4 3 4 3 1.4 1.4 (.055) (.055) DUAL INDUCTOR MODE SERIES MODE 1 2 1 2 1 2 N1 N2 N1 N2 N1 N2 3 4 3 4 3 4 PARALLEL SERIES

7.6 MAX. (.299) 7.6 (.299) MAX. 3.4 ± 0.2 (.134 ± .008) 2.9 TYP. (.114) 4 3 2.7 (.106) TYP. 1 2 1.0 TYP. (.039) 0.4 3.0 0.4 3.0 (.016) (.118) (.016) (.118) 1 2 1 2 7.9 7.9 (.311) (.311) 4 3 4 3 1.4 1.4 (.055) (.055) DUAL INDUCTOR MODE SERIES MODE SSRRFF00750034 S Seerireise s- D- uLainl-eW Finildtienrg Shielded Power Inductors Electrical Schematic 1 2 1 2 1 2 N1 N2 N1 N2 N1 N2 3 4 3 4 3 4 PARALLEL SERIES Packaging Specifications 330 DIA. 2.0 ± 0.5 22.4 (12.99) (.079 ± .020) (.882) 13.0 ± 0.5 21.0 ± 0.8 (.512 ± .020) (.827 ± .031) DIA. 50.0 -0 (1.97 -0) 13.0 ± 0.5 DIA. (.512 ± .020) 18 +0 16.0 (.709 +0) (.630) 16.0 4.0 END (.630) (.157) START NO COMPONENT COMPONENTS NO COMPONENT 200 400 (7.87) (15.75) USER DIRECTION OF FEED MM DIMENSIONS: QTY: 1500 PCS. PER REEL (INCHES) Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com EMEA: Tel: +36 88 885 877 • Email: eurocus@bourns.com The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com www.bourns.com REV. 06/19 Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

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