T PL IA N M CO *R oH S Features Applications ■ Available in E6 series ■ Input/output of DC/DC converters ■ Unit height of 3.8 mm ■ Power supplies for: • • • • ■ Current up to 7.2 A ■ RoHS compliant* 100 Portable communication equipment Camcorders LCD TVs Car radios SRU1038 Series - Shielded SMD Power Inductors Electrical Specifications General Specifications Inductance 100 KHz Bourns Part No. (µH) Tol. % Q Ref. Test Freq. (MHz) SRU1038-1R5Y 1.5 ± 30 14 7.96 65.0 5.2 7.20 7.00 177 SRU1038-2R2Y 2.2 ± 30 12 7.96 55.0 7.7 6.80 6.50 145 SRU1038-2R5Y 2.5 ± 30 12 7.96 50.0 12.5 6.10 6.00 136 SRU1038-3R5Y 3.5 ± 30 14 7.96 24.0 11.5 5.50 5.50 106 SRU1038-3R8Y 3.8 ± 30 14 7.96 35.0 15.0 5.50 5.50 104 SRU1038-5R0Y 5.0 ± 30 12 7.96 30.0 14.5 4.60 4.80 94 SRU1038-5R2Y 5.2 ± 30 12 7.96 30.0 22.0 4.60 4.80 92 SRU1038-6R2Y 6.2 ± 30 12 7.96 25.0 16.5 4.00 4.20 84 SRU1038-6R8Y 6.8 ± 30 13 7.96 36.0 35.0 3.90 4.00 80 SRU1038-8R2Y 8.2 ± 30 12 7.96 22.0 32.0 3.80 3.90 73 SRU1038-100Y 10.0 ± 30 24 7.96 20.0 25.0 3.80 3.60 64 SRU1038-150Y 15.0 ± 30 24 2.52 16.0 37.0 2.80 2.70 51 SRU1038-220Y 22.0 ± 30 20 2.52 12.0 55.8 2.20 2.30 43 SRU1038-270Y 27.0 ± 30 22 2.52 11.0 78.0 1.85 1.90 39 SRU1038-330Y 33.0 ± 30 22 2.52 10.0 86.0 1.80 1.80 35 SRU1038-470Y 47.0 ± 30 22 2.52 8.0 121.0 1.65 1.60 29 SRU1038-680Y 68.0 ± 30 24 2.52 7.0 166.0 1.10 1.30 26 SRU1038-101Y 100.0 ± 30 24 0.796 6.0 220.0 1.30 1.10 20 SRU1038-151Y 150.0 ± 30 20 0.796 5.0 358.0 0.90 0.80 16 SRU1038-221Y 220.0 ± 30 22 0.796 4.0 565.0 0.65 0.65 14 SRU1038-331Y 330.0 ± 30 20 0.796 3.0 773.0 0.55 0.52 11 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 Rated Current ...................Ind. drop 35 % typ. at Isat Temperature Rise .....................40 °C max. at rated Irms Resistance to Soldering Heat ............................... 260 °C for 10 sec. Materials Core ....................Ferrite DR and RI core Wire ............................Enameled copper Terminal ....................................Ag/Ni/Sn Packaging .................... 800 pcs. per reel Product Dimensions 10.0 ± 0.3 (.394 ± .012) 10.0 ± 0.3 (.394 ± .012) **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 on page 2. Electrical Schematic 3.8 ± 0.3 (.150 ± .012) Inductor Connection 7.4 TYP. (.291) 3.4 (.134) TYP. 3.2 (.126) TYP. LCR METER 3.4 TYP. (.134) Recommended Layout 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 * 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. 1.8 (.071) REF. 7.2 (.283) REF. DIMENSIONS: 1.8 (.071) REF. MM (INCHES) 3.6 (.142) REF. SRF0504 Filter SMD Power Inductors SRU1038Series Series- -Line Shielded Core Loss vs. Flux Density 10000 Core Loss (mW) 1000 100 1 MHz 500 KHz 300 KHz 200 KHz 100 KHz 50 KHz 10 1 0.1 100 1000 10000 Flux Density Bp-p (gauss) Packaging Specifications 330 DIA. (12.99) 2.0 ± 0.5 (.079 ± .020) 30.4 (1.20) 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 26 (1.02) END 24.0 (.945) 4 (.157) START 16 (.63) NO COMPONENT 160 (6.299) NO COMPONENT 400 (15.748) COMPONENTS USER DIRECTION OF FEED QTY: 800 PCS. PER REEL DIMENSIONS: MM (INCHES) 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.