features formerly model current rating up to 920 ma inductance range: 1.0 h to 1,000 h rohs compliant* applications dc/dc converters power supplies general use 77f series conformal coated rf choke *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. customers should verify actual device performance in their speci c applications. *rohs compliant electrical speci cations (@ 25 ?) bourns part no. inductance q min. test frequency (mhz) srf (mhz) min. dcr ( ) max. idc (ma) ( h) tol. (%) 77f1r0k-rc 1.0 ?0 50 25.2 157 0.17 920 77f1r2k-rc 1.2 ?0 50 7.96 144 0.18 880 77f1r5k-rc 1.5 ?0 50 7.96 131 0.20 830 77f1r8k-rc 1.8 ?0 50 7.96 121 0.22 790 77f2r2k-rc 2.2 ?0 50 7.96 110 0.24 750 77f2r7k-rc 2.7 ?0 60 7.96 100 0.25 720 77f3r3k-rc 3.3 ?0 60 7.96 94 0.30 670 77f3r9k-rc 3.9 ?0 60 7.96 86 0.35 640 77f4r7k-rc 4.7 ?0 70 7.96 80 0.40 620 77f5r6k-rc 5.6 ?0 70 7.96 74 0.45 590 77f6r8k-rc 6.8 ?0 75 7.96 68 0.50 550 77f8r2k-rc 8.2 ?0 80 7.96 53 0.52 530 77f100k-rc 10 ?0 85 7.96 40 0.65 500 77f120k-rc 12 ?0 75 2.52 34 0.70 480 77f150k-rc 15 ?0 70 2.52 20 0.75 460 77f180k-rc 18 ?0 60 2.52 14 0.80 430 77f220k-rc 22 ?0 60 2.52 9.9 0.90 410 77f270k-rc 27 ?0 50 2.52 7.6 1.00 390 77f330j-rc 33 ? 50 2.52 6.5 1.10 370 77F390J-RC 39 ? 50 2.52 6.5 1.20 350 77f470j-rc 47 ? 45 2.52 6.3 1.30 340 77f560j-rc 56 ? 45 2.52 6.2 1.50 320 77f680j-rc 68 ? 40 2.52 5.7 1.80 305 77f820j-rc 82 ? 35 2.52 5.3 2.00 290 77f101j-rc 100 ? 30 2.52 4.8 2.50 275 77f121j-rc 120 ? 60 0.796 3.8 3.0 185 77f151j-rc 150 ? 60 0.796 3.5 4.0 175 77f181j-rc 180 ? 60 0.796 3.0 4.5 165 77f221j-rc 220 ? 60 0.796 2.8 5.0 155 77f271j-rc 270 ? 60 0.796 2.6 6.0 145 77f331j-rc 330 ? 60 0.796 2.4 6.5 137 77f391j-rc 390 ? 55 0.796 2.0 7.5 133 77f471j-rc 470 ? 50 0.796 1.8 8.5 126 77f561j-rc 560 ? 50 0.796 1.6 9.5 120 77f681j-rc 680 ? 45 0.796 1.6 12.0 113 77f821j-rc 820 ? 45 0.796 1.4 14.0 105 77f102j-rc 1000 ? 50 0.796 1.2 20.0 100 general speci cations temperature rise ................ 35 ? at idc operating temperature ............................... -55 ? to +105 ? storage temperature ............................... -55 ? to +105 ? dielectric strength ................... 500 vrms materials core .............................................. ferrite wire ............................. polyester copper terminal coating .............sn-ag-cu alloy coating .................................epoxy resin packaging ..... 5000 pcs. per 14-inch reel how to order 77f 151j - tr - rc model value code (see table) packaging code tr = 5000 pcs./14-inch reel compliance code rc = rohs compliant* example: 77f102j-tr-rc = 1000 h packaged 5000 pcs./14-inch reel. electrical schematic
dimensions: mm (inches) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 77f series conformal coated rf choke product dimensions 0.64 (0.025) 3.99 (0.157) 10.41 (0.41) max. 25.4 (1.0) min. max. typical part marking - eia color code rev. 10/12 1st signi cant gure (blue) 2nd signi cant gure (gray) multiplier (gold) tolerance (silver) example for 6.8 ?, ?0 % example for 270 ?, ? % color 1st & 2nd significant figure multiplier tolerance silver gold black brown red orange yellow green blue violet gray white 0 1 2 3 4 5 6 7 8 9 0.01 0.1 1 10 100 1000 ?0 % ? % 1st signi cant gure (red) 2nd signi cant gure (purple) multiplier (brown) tolerance (gold)
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