5.8 (.228) 2.0 (.079) 2.0 (.079) 3.2 (.126) ref. ref. ref. ref. features available in e6 series unit height of 2.8 mm current up to 7 a rohs compliant* applications input/output of dc/dc converters power supplies for: ? portable communication equipment ? camcorders ? lcd tvs ? car radios sru8028 series - shielded smd power inductors * rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. speci? cations 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 speci? c applications. test voltage .......................................1 v re ow soldering .. 230 ?, 50 sec. max. operating temperature ................................-40 ? to +125 ? (temperature rise included) storage temperature ................................-40 ? to +125 ? resistance to soldering heat ............................... 260 ? for 10 sec. rated current ...................ind. drop 35 % typ. at isat temperature rise .....................40 ? max. at rated irms electrical speci cations bourns part no. inductance 100 khz q ref. test freq. (mhz) srf typ. (mhz) rdc (m ) irms max. (a) isat typ. (a) **k- factor (?) tol. % 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 ?0 20 2.52 15.0 147 1.30 1.10 74 sru8028-470y 47.0 ?0 14 2.52 12.0 177 1.20 1.00 62 sru8028-680y 68.0 ?0 23 2.52 9.0 317 0.85 0.80 50 sru8028-101y 100.0 ?0 35 0.796 8.0 390 0.75 0.70 41 general speci cations core ....................ferrite dr and ri core wire ............................enameled copper terminal ....................................ag/ni/sn packaging .................. 1500 pcs. per reel materials product dimensions recommended layout *rohs compliant dimensions: mm (inches) electrical schematic inductor connection 220 lcr meter 6.0 (.236) typ. typ. 8.0 0.3 (.315 .012) 2.5 (.098) typ. 2.8 (.110) typ. 2.5 (.098) 2.8 0.3 (.110 .012) 8.0 0.3 (.315 .012) flux density bp-p (gauss) 100 1000 10000 10 10 100 1 mhz 800 khz 500 khz 400 khz 300 khz 200 khz 100 khz 1000 1 0.1 0.01 0.001 0.0001 core loss (mw) **k-factor: to calculate core ux density, bp-p (gauss) = k x l(?) x i (peak-to-peak ripple current, a), determine core loss from core loss vs. flux density plot. core loss vs. flux density
srf0504 series - line filter packaging speci cations qty: 1500 pcs. per reel rev. 11/13 speci cations 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 perfor mance may vary over time. users should verify actual device performance in their speci c applications. sru8028 series - shielded smd power inductors dimensions: mm (inches) embossed carrier embossed cavity 12.0 (.472) cover tape 18 (.709) 22.4 (.882) 2.0 ?0.5 (.079 ?.020) 50.0 (1.969) 330 (12.99) dia. 13.0 ?0.5 (.512 ?.020) dia. 13.0 ?0.5 (.512 ?.020) dia. 21.0 ?0.8 (.827 ?.031) user direction of feed 160 (6.299) no component no component components 400 (15.748) start 4 (.157) 12 (.472) end asia-paci? c: 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
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