T PL IA N M CO *R oH S Features Applications ■ Available in E6 series ■ Input/output of DC/DC converters ■ Unit height of 2.8 mm ■ Power supplies for: • • • • ■ Current up to 7 A ■ RoHS compliant* 220 Portable communication equipment Camcorders LCD TVs Car radios SRU8028 Series - Shielded SMD Power Inductors Electrical Specifications General Specifications Inductance 100 KHz Bourns Part No. (µH) Tol. % Q Ref. Test Freq. (MHz) SRU8028-1R0Y 1.0 ± 30 12 7.96 66.0 10.1 7.00 5.50 389 SRU8028-2R5Y 2.5 ± 30 15 7.96 65.0 13.6 4.50 4.20 251 SRU8028-3R3Y 3.3 ± 30 12 7.96 60.0 17.5 3.60 3.50 222 SRU8028-4R7Y 4.7 ± 30 15 7.96 50.0 20.0 3.70 3.20 198 SRU8028-6R8Y 6.8 ± 30 13 7.96 40.0 34.0 2.80 2.50 164 SRU8028-8R2Y 8.2 ± 30 17 7.96 37.0 54.0 2.60 2.30 143 SRU8028-100Y 10.0 ± 30 22 2.52 35.0 45.0 2.60 2.20 130 SRU8028-120Y 12.0 ± 30 21 2.52 30.0 76.0 2.20 2.00 121 SRU8028-150Y 15.0 ± 30 20 2.52 25.0 66.0 2.00 1.70 108 SRU8028-220Y 22.0 ± 30 22 2.52 20.0 106 1.60 1.50 88 SRU8028-330Y 33.0 ±30 20 2.52 15.0 147 1.30 1.10 74 SRU8028-470Y 47.0 ±30 14 2.52 12.0 177 1.20 1.00 62 SRU8028-680Y 68.0 ±30 23 2.52 9.0 317 0.85 0.80 50 SRU8028-101Y 100.0 ±30 35 0.796 8.0 390 0.75 0.70 41 SRF Typ. (MHz) RDC (mΩ) Irms Max. (A) Isat Typ. (A) **KFactor Test Voltage .......................................1 V 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 Soldering Heat ............................... 260 °C for 10 sec. Rated Current ...................Ind. drop 35 % typ. at Isat Temperature Rise .....................40 °C max. at rated Irms Materials Core ....................Ferrite DR and RI core Wire ............................Enameled copper Terminal ....................................Ag/Ni/Sn Packaging .................. 1500 pcs. per reel Product Dimensions **K-Factor: To calculate core flux density, Bp-p (gauss) = K x L(µH) x Δ I (peak-to-peak ripple current, A), determine core loss from Core Loss vs. Flux Density plot. 8.0 ± 0.3 (.315 ± .012) Core Loss vs. Flux Density 10000 8.0 ± 0.3 (.315 ± .012) 1000 Core Loss (mW) 100 2.8 ± 0.3 (.110 ± .012) 10 1 MHz 800 KHz 500 KHz 400 KHz 300 KHz 200 KHz 100 KHz 1 0.1 0.01 6.0 TYP. (.236) 2.5 (.098) TYP. 0.001 2.8 (.110) TYP. 0.0001 10 100 1000 2.5 TYP. (.098) Flux Density Bp-p (gauss) Electrical Schematic Inductor Connection Recommended Layout 2.0 (.079) REF. * 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. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. 5.8 (.228) REF. LCR METER DIMENSIONS: MM (INCHES) 2.0 (.079) REF. 3.2 (.126) REF. SRF0504 Filter SMD Power Inductors SRU8028Series Series- -Line Shielded Packaging Specifications 330 DIA. (12.99) 2.0 ± 0.5 (.079 ± .020) 22.4 (.882) COVER TAPE 13.0 ± 0.5 (.512 ± .020) DIA. 21.0 ± 0.8 (.827 ± .031) EMBOSSED CAVITY 50.0 (1.969) 13.0 ± 0.5 DIA. (.512 ± .020) EMBOSSED CARRIER 12.0 (.472) 18 (.709) 4 (.157) END START 12 (.472) NO COMPONENT 160 (6.299) NO COMPONENT COMPONENTS 400 (15.748) USER DIRECTION OF FEED QTY: 1500 PCS. PER REEL DIMENSIONS: MM (INCHES) Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116 EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211 The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700 www.bourns.com REV. 11/13 Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications.