20.3 tel. (877) 426-8767 ? fax (951) 781-5006 www.bourns.com ? rohs compliant special features ? high q, high self-resonant frequency ? high voltage application on phenolic and ferrite components ? universal wound ? low cost ? varnish coated ? operating temperature: phenolic -55 to +125 c; iron, ferrite -55 to +105 c notes * current to cause 35 c max. temperature rise varnished chokes 70f series part number l (h) 20 % q test freq. (mhz) srf dcr ? max. i, dc* (ma) dim. a max dim. b 0.03 core material 70f107ap-rc 0.10 49 25 600 0.13 3922 0.15 0.31 phenolic 70f157ap-rc 0.15 52 25 490 0.25 2828 0.14 0.31 phenolic 70f227ap-rc 0.22 48 25 400 0.38 2294 0.14 0.31 phenolic 70f337ap-rc 0.33 47 25 330 0.70 1690 0.12 0.31 phenolic 70f477ap-rc 0.47 46 25 280 0.125 1264 0.12 0.31 phenolic 70f687ap-rc 0.68 48 25 240 0.20 1000 0.12 0.31 phenolic 70f757ap-rc 0.75 48 25 224 0.264 870 0.12 0.31 phenolic 70f827ap-rc 0.82 48 25 216 0.29 830 0.12 0.31 phenolic 70f106ai-rc 1.0 41 25 118 0.048 2041 0.16 0.25 iron 10 % 70f126ai-rc 1.2 45 7.9 118 0.072 1666 0.16 0.25 iron 70f156ai-rc 1.5 42 7.9 102 0.096 1443 0.16 0.25 iron 70f186ai-rc 1.8 31 7.9 89 0.096 1443 0.16 0.25 iron 70f226ai-rc 2.2 43 7.9 87 0.156 1132 0.16 0.25 iron 70f276ai-rc 2.7 34 7.9 74 0.168 1091 0.16 0.25 iron 70f336ai-rc 3.3 40 7.9 66 0.24 912 0.15 0.25 iron 70f396ai-rc 3.9 35 7.9 61 0.264 870 0.15 0.25 iron 70f476ai-rc 4.7 43 7.9 53 0.457 661 0.15 0.25 iron 70f566ai-rc 5.6 41 7.9 49 0.492 637 0.15 0.25 iron 70f686ai-rc 6.8 40 7.9 49 0.624 566 0.15 0.25 iron 70f756ai-rc 7.5 32 7.9 44 0.624 566 0.15 0.25 iron 70f826ai-rc 8.2 37 7.9 41 0.744 518 0.15 0.25 iron 70f916ai-rc 9.1 41 7.9 21 1.44 288 0.16 0.25 iron 70f105ai-rc 10 36 7.9 19 1.56 277 0.16 0.25 iron 70f125ai-rc 12 52 2.5 19 1.68 267 0.16 0.25 iron 70f155ai-rc 15 52 2.5 16 1.92 250 0.16 0.25 iron 5 % 70f185ai-rc 18 52 2.5 15 2.28 229 0.16 0.25 iron 70f225ai-rc 22 51 2.5 13 2.28 229 0.16 0.25 iron 70f255ai-rc 25 48 2.5 13 2.64 213 0.17 0.25 iron 70f275ai-rc 27 49 2.5 12 2.64 213 0.17 0.25 iron 70f335ai-rc 33 50 2.5 10 2.76 208 0.17 0.25 iron 70f395ai-rc 39 48 2.5 9.3 3.36 188 0.17 0.25 iron 70f475ai-rc 47 44 2.5 9.1 3.36 188 0.17 0.25 iron 70f565ai-rc 56 45 2.5 8.6 3.84 176 0.18 0.25 iron 70f685ai-rc 68 42 2.5 8.1 4.2 169 0.18 0.25 iron 70f755ai-rc 75 38 2.5 7.2 4.56 162 0.18 0.25 iron 70f825ai-rc 82 41 2.5 6.7 4.8 158 0.18 0.25 iron 70f915ai-rc 91 41 2.5 6.7 4.92 156 0.18 0.25 iron 70f104ai-rc 100 25 2.5 3.6 7.68 139 0.16 0.25 iron 70f124ai-rc 120 40 0.79 3.2 8.16 135 0.16 0.25 iron 70f154ai-rc 150 47 0.79 3.0 8.16 135 0.16 0.25 iron 70f184ai-rc 180 48 0.79 2.8 8.16 135 0.17 0.25 iron 70f204ai-rc 200 47 0.79 2.7 10.3 120 0.17 0.25 iron 70f224ai-rc 220 46 0.79 2.5 11.5 114 0.17 0.25 iron 70f254ai-rc 250 49 0.79 2.5 12.1 111 0.17 0.25 iron 70f274ai-rc 270 46 0.79 2.5 13.2 106 0.17 0.25 iron 70f304ai-rc 300 46 0.79 2.2 13.2 106 0.17 0.25 iron 70f334ai-rc 330 41 0.79 2.0 13.9 103 0.17 0.25 iron 70f354ai-rc 350 46 0.79 2.0 14.4 102 0.18 0.25 iron -rc su? x indicates rohs compliance. continued next page. 1.25 b a dia. 0.025 for 0.1-22,000uh 0.032 for 25,000-500,000uh dimensions: inches ? rohs directive 2002/95/ec jan 27 2003 including annex. rev. 06/07
tel. (877) 426-8767 ? fax (951) 781-5006 www.bourns.com 20.4 ? rohs compliant varnished chokes special features ? high q, high self-resonant frequency ? high voltage application on phenolic and ferrite components ? universal wound ? low cost ? varnish coated ? operating temperature: phenolic -55 to +125 c; iron, ferrite -55 to +105 c notes * current to cause 35 c max. temperature rise 70f series continued part number l (h) 5 % q min. test freq. (mhz) srf (mhz) min. dcr ? max. i, dc* (ma) dim. a max dim. b 0.03 core material 70f394ai-rc 390 45 0.79 2.0 15.8 97 0.18 0.25 iron 70f474ai-rc 470 35 0.79 1.8 16.3 95 0.18 0.25 iron 70f504ai-rc 500 49 0.79 1.8 18.0 91 0.19 0.25 iron 70f564ai-rc 560 41 0.79 1.7 19.2 88 0.19 0.25 iron 70f684ai-rc 680 37 0.79 1.6 19.8 87 0.2 0.25 iron 70f754ai-rc 750 40 0.79 1.6 22.9 80 0.21 0.25 iron 70f824ai-rc 820 33 0.79 1.6 22.9 80 0.21 0.25 iron 70f914ai-rc 910 32 0.79 1.4 24.0 79 0.22 0.25 iron 70f103ai-rc 1000 30 0.79 1.4 24.0 79 0.22 0.25 iron 70f123ai-rc 1200 34 0.25 1.2 33.6 66 0.22 0.25 iron 70f153ai-rc 1500 40 0.25 1.1 37.2 63 0.22 0.25 iron 70f183ai-rc 1800 40 0.25 0.96 42.0 59 0.23 0.25 iron 70f223ai-rc 2200 40 0.25 0.96 45.6 57 0.24 0.25 iron 70f253ai-rc 2500 48 0.25 0.96 45.6 57 0.26 0.38 iron 70f273ai-rc 2700 50 0.25 0.88 45.6 57 0.26 0.38 iron 70f333ai-rc 3300 52 0.25 0.80 51.6 53 0.26 0.38 iron 70f393ai-rc 3900 53 0.25 0.76 57.6 51 0.27 0.38 iron 70f473ai-rc 4700 49 0.25 0.68 64.8 48 0.28 0.38 iron 70f563ai-rc 5600 53 0.25 0.68 69.6 46 0.3 0.38 iron 70f683ai-rc 6800 51 0.25 0.64 78 43 0.31 0.38 iron 70f753ai-rc 7500 49 0.25 0.60 85.2 41 0.31 0.38 iron 70f823ai-rc 8200 48 0.25 0.60 92.4 40 0.33 0.38 iron 70f913ai-rc 9100 52 0.25 0.56 98.4 39 0.33 0.38 iron 70F102AI-RC 10,000 41 0.25 0.52 101 38 0.33 0.38 iron 70f122ai-rc 12,000 46 0.079 0.36 100 50 0.3 0.50 iron 70f152ai-rc 15,000 50 0.079 0.32 113 47 0.3 0.50 iron 70f182ai-rc 18,000 49 0.079 0.29 128 44 0.32 0.50 iron 70f222ai-rc 22,000 50 0.079 0.27 144 41 0.33 0.50 iron 70f252af-rc 25,000 59 0.079 0.25 115 46 0.34 0.63 ferrite 70f272af-rc 27,000 61 0.079 0.244 120 45 0.35 0.63 ferrite 70f332af-rc 33,000 61 0.079 0.232 134 43 0.35 0.63 ferrite 70f392af-rc 39,000 59 0.079 0.22 147 41 0.37 0.63 ferrite 70f472af-rc 47,000 57 0.079 0.206 168 38 0.38 0.63 ferrite 70f502af-rc 50,000 57 0.079 0.196 175 37 0.4 0.63 ferrite 70f562af-rc 56,000 57 0.079 0.188 189 36 0.4 0.63 ferrite 70f682af-rc 68,000 57 0.079 0.18 215 34 0.41 0.63 ferrite 70f752af-rc 75,000 53 0.079 0.174 222 33 0.43 0.63 ferrite 70f822af-rc 82,000 50 0.079 0.168 238 32 0.43 0.63 ferrite 70f912af-rc 91,000 51 0.079 0.166 250 31 0.43 0.63 ferrite 70f101af-rc 100,000 48 0.079 0.157 278 29 0.44 0.63 ferrite l tested @ 1 khz 70f121af-rc 120,000 46 0.025 0.084 288 48 0.48 0.88 ferrite 70f151af-rc 150,000 49 0.025 0.077 328 44 0.50 0.88 ferrite 70f181af-rc 180,000 51 0.025 0.075 374 41 0.52 0.88 ferrite 70f221af-rc 220,000 51 0.025 0.07 424 39 0.54 0.88 ferrite 70f251af-rc 250,000 52 0.025 0.065 468 37 0.55 0.88 ferrite 70f271af-rc 270,000 53 0.025 0.062 490 36 0.57 0.88 ferrite 70f331af-rc 330,000 54 0.025 0.06 540 34 0.58 0.88 ferrite 70f391af-rc 390,000 54 0.025 0.056 617 33 0.6 0.88 ferrite 70f471af-rc 470,000 55 0.025 0.054 704 30 0.61 0.88 ferrite 70f501af-rc 500,000 53 0.025 0.052 736 30 0.63 0.88 ferrite 1.25 b a dia. 0.025 for 0.1-22,000uh 0.032 for 25,000-500,000uh dimensions: inches ? rohs directive 2002/95/ec jan 27 2003 including annex. -rc su? x indicates rohs compliance. rev. 06/07
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