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 0.72 A 100 ■ RoHS compliant* Portable communication equipment Camcorders LCD TVs Car radios SRU3028 Series - Shielded SMD Power Inductors General Specifications Electrical Specifications Bourns Part Number Inductance @ 100 KHz Tol. L (µH) (%) Q Ref. Test Freq. (MHz) SRF Typ. (MHz) RDC (mΩ) I rms Max. (A) I sat Typ. (A) **KFactor SRU3028-100Y 10.0 ±30 20 7.96 35 160 0.72 0.86 276 SRU3028-150Y 15.0 ±30 18 2.52 25 230 0.66 0.72 241 SRU3028-220Y 22.0 ±30 18 2.52 15 270 0.60 0.62 214 SRU3028-330Y 33.0 ±30 20 2.52 10 450 0.47 0.48 180 SRU3028-470Y 47.0 ±30 20 2.52 8 815 0.32 0.38 133 SRU3028-680Y 68.0 ±30 20 2.52 7 1400 0.24 0.28 112 SRU3028-101Y 100.0 ±30 20 0.796 5 2200 0.19 0.21 91 **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. Core Loss vs. Flux Density Test Voltage ....................................0.1 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. Materials Core ....................Ferrite DR and RI core Wire ............ Enameled copper (Class F) Terminal ....................................Ag/Ni/Sn Rated Current ...................Ind. drop 35 % typ. at Isat Temperature Rise .....................40 °C max. at rated Irms Packaging .................... 600 pcs. per reel 1000 Product Dimensions 3.5 ± 0.2 (.138 ± .008) Core Loss (mW) 100 10 1 MHz 500 KHz 300 KHz 200 KHz 100 KHz 50 KHz 1 100 3.3 ± 0.2 (.130 ± .008) 0.1 2.8 ± 0.2 (.110 ± .008) 0.01 100 1000 10000 Flux Density Bp-p (gauss) Inductor Connection Recommended Layout REF. 0.5 TYP. (.020) 4.2 (.165) 1.1 (.043) TYP. ET ER 1.8 REF. (.071) 2.30 TYP. (.091) LC R M TYP. 1.3 REF. (.051) 1.2 (.047) 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. 0.5 (.020) DIMENSIONS: MM (INCHES) Electrical Schematic SRU3028 Series SMD Power Inductors SRF0504 Series- -Shielded Line Filter Packaging Specifications 178 DIA. (7.008) 2.0 ± 0.5 (.079 ± .020) 16.5 (.650) 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) 14 (.551) 4 (.157) END 100 100 START 100 8 (.315) NO COMPONENT 160 (6.299) NO COMPONENT COMPONENTS 400 (15.748) USER DIRECTION OF FEED QTY: 600 PCS. PER REEL DIMENSIONS: MM (INCHES) REV. 06/15 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.