*rohs directive 2002/95/ec jan 27 2003 including annex specifications are subject to change without notice. customers should verify actual device performance in their specific applications. *rohs compliant srf2012 series - common mode chip inductors features high impedance value current rating up to 450 ma rohs compliant* applications noise suppression personal computers display panels electrical specifications product dimensions 0.40 (.016) typ. 0.40 (.016) typ. typ. 0.45 (.018) typ. 0.45 (.018) 1.25 0.2 (.049 .008) 1.25 0.2 (.049 .008) 2.05 0.2 (.081 .008) 1 4 2 3 general specifications reflow soldering.....230 c; 50 sec max. operating temperature ..-55 c to +125 c (temperature rise included) storage temperature..-55 c to +125 c resistance to soldering heat ............................260 c, 10 sec. max. materials core...............................................ferrite wire .............................enameled copper terminal.....................................ag/ni/sn packaging...................2000 pcs. per reel recommended layout ref. 0.90 (.035) ref. 0.35 (.014) ref. 0.35 (.014) ref. 0.80 (.032) ref. 0.50 (.020) ref. 0.90 (.035) dimensions: mm (inches) impedance rated withstanding insulation dcr idc @ 100 mhz voltage voltage resistance max. max. bourns part no. ( ? ? ) tolerance (%) (dc) (dc) (m ? ? )( ? )(ma) srf2012-300y 30 25 50 125 10 0.20 450 srf2012-670y 67 25 50 125 10 0.25 400 SRF2012-900Y 90 25 50 125 10 0.35 330 srf2012-121y 120 25 50 125 10 0.30 370 srf2012-161y 160 25 50 125 10 0.40 300 srf2012-181y 180 25 50 125 10 0.35 330 srf2012-201y 200 25 50 125 10 0.35 330 srf2012-221y 220 25 50 125 10 0.35 310 srf2012-261y 260 25 50 125 10 0.40 300 srf2012-301y 300 25 50 125 10 0.40 290 srf2012-361y 360 25 50 125 10 0.45 280 srf2012-371y 370 25 50 125 10 0.45 280 srf2012-501y 500 25 50 125 10 0.55 170 srf2012-671y 670 25 50 125 10 0.60 140 srf2012-901y 900 25 50 125 10 0.60 80 common mode normal mode z (f) 1 mhz 3 mhz 10 mhz 30 mhz 100 mhz 300 mhz 1 ghz 1 mhz 3 mhz 10 mhz 30 mhz 100 mhz 300 mhz 1 ghz 300 0.64 1.94 5.99 14.34 31.33 53.67 93.89 0.200 0.240 0.470 1.180 3.490 9.850 34.370 670 1.45 4.42 13.62 32.45 70.17 117.65 201.20 0.250 0.290 0.550 1.340 3.830 10.560 34.260 900 1.04 3.09 10.14 28.96 90.46 254.50 491.35 0.280 0.330 0.610 1.520 4.150 11.260 38.760 121 2.64 7.96 23.80 56.67 126.11 218.67 417.23 0.330 0.380 0.670 1.640 4.710 13.030 43.460 161 1.79 5.35 17.50 49.70 153.36 327.38 574.77 0.390 0.440 0.760 1.850 5.290 14.560 53.660 171 3.87 11.68 35.09 82.74 180.25 314.98 587.53 0.400 0.450 0.750 1.800 5.050 13.770 48.810 261 5.33 15.85 46.54 109.83 263.01 479.42 895.05 0.450 0.500 0.850 2.040 5.770 15.820 62.080 371 4.16 12.42 40.38 113.88 369.14 802.72 1135.60 0.510 0.560 0.890 2.070 5.760 15.600 72.730 *rohs compliant impedance vs. frequency 1000 ch1 t & b 3.5 k , 1 z + ip 100 10 1 0.1 common mode normal mode 1 0 100 1000 261 371 121 670 300 900 181 161 371 261 181 161 121 900 670 300
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. srf2012 series - common mode chip inductors rev. 02/08 14 + 0 (.551 + 0) 16.5 (.650) 2.0 0.5 (.079 .020) 50.0 - 0 (1.969 - 0) 178 (7.00) dia. 13.0 (.512) dia. 13.0 (.512) dia. 21.0 0.8 (.827 .031) packaging specifications start end 4.0 (.157) 4.0 (.157) 200 (7.87) no component no component components 400 (15.75) user direction of feed qty: 2000 pcs. per reel dimensions: mm (inches) soldering profile temperature (c) 25 75 125 175 225 275 0 50 100 150 200 250 300 time (seconds) 120 - 150 seconds 60 - 90 seconds 260c peak 190c 150c 220c ramp down 6c/second maximum <1> 255c <1> maximum of 10 seconds between +255c and +260c ramp up 3c/second maximum 10 seconds minimum rev. 02/22/05 electrical schematic 1 4 n1 n2 2 3
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