features current rating up to 1.2 a dielectric strength: 500 vrms rohs compliant* applications dc/dc converters power supplies general use 78f series conformal coated rf choke *rohs directive 2002/95/ec jan 27, 2003 including annex. 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 ?) part number value ( h) q min. te s t frequency (mhz) srf (mhz) min. dcr ( ) max. idc (ma) max. 78fr10k-rc 0.10 ?0 % 20 25 400 0.060 1200 78fr12k-rc 0.12 ?0 % 20 25 400 0.070 1200 78fr15k-rc 0.15 ?0 % 20 25 380 0.070 1200 78fr18k-rc 0.18 ?0 % 20 25 380 0.073 1150 78fr22k-rc 0.22 ?0 % 40 25 380 0.075 1150 78fr27k-rc 0.27 ?0 % 40 25 360 0.085 1110 78fr33k-rc 0.33 ?0 % 40 25 335 0.095 1110 78fr39k-rc 0.39 ?0 % 40 25 310 0.10 1000 78FR47K-RC 0.47 ?0 % 40 25 270 0.11 1000 78fr56k-rc 0.56 ?0 % 40 25 245 0.12 950 78fr68k-rc 0.68 ?0 % 40 25 230 0.13 900 78fr82k-rc 0.82 ?0 % 40 25 200 0.14 875 78f1r0k-rc 1.0 ?0 % 40 25 180 0.15 815 78f1r2k-rc 1.2 ?0 % 40 7.9 165 0.18 740 78f1r5k-rc 1.5 ?0 % 50 7.9 150 0.20 700 78f1r8k-rc 1.8 ?0 % 50 7.9 125 0.23 655 78f2r2k-rc 2.2 ?0 % 50 7.9 110 0.25 630 78f2r7k-rc 2.7 ?0 % 50 7.9 95 0.28 595 78f3r3j-rc 3.3 ? % 50 7.9 60 0.30 575 78f3r9j-rc 3.9 ? % 45 7.9 50 0.32 555 78f4r7j-rc 4.7 ? % 45 7.9 38 0.35 530 78f5r6j-rc 5.6 ? % 45 7.9 32 0.40 500 78f6r8j-rc 6.8 ? % 40 7.9 28 0.45 470 78f8r2j-rc 8.2 ? % 40 7.9 20 0.55 425 78f100j-rc 10 ? % 40 7.9 18 0.75 370 78f120j-rc 12 ? % 45 2.5 16 0.80 350 78f150j-rc 15 ? % 50 2.5 16 0.93 335 78f180j-rc 18 ? % 50 2.5 15 1.00 315 78f220j-rc 22 ? % 50 2.5 13 1.20 285 78f270j-rc 27 ? % 50 2.5 11 1.35 270 78f330j-rc 33 ? % 50 2.5 10 1.50 255 78f390j-rc 39 ? % 50 2.5 9.50 1.70 240 78f470j-rc 47 ? % 60 2.5 8.50 2.70 205 78f560j-rc 56 ? % 60 2.5 7.50 2.95 195 78f680j-rc 68 ? % 60 2.5 6.50 3.30 185 78f820j-rc 82 ? % 60 2.5 6.00 3.60 175 78f101j-rc 100 ? % 60 2.5 5.50 4.10 165 78f121j-rc 120 ? % 60 0.79 5.40 4.70 160 78f151j-rc 150 ? % 60 0.79 4.75 5.40 150 78f181j-rc 180 ? % 60 0.79 4.35 6.00 140 78f221j-rc 220 ? % 60 0.79 4.00 6.80 130 78f271j-rc 270 ? % 60 0.79 3.70 7.70 120 78f331j-rc 330 ? % 60 0.79 3.40 11.1 100 78f391j-rc 390 ? % 60 0.79 2.80 12.6 95 78f471j-rc 470 ? % 60 0.79 2.55 14.0 90 78f561j-rc 560 ? % 60 0.79 2.35 15.5 85 78f681j-rc 680 ? % 60 0.79 2.00 25.3 68 78f821j-rc 820 ? % 60 0.79 1.50 27.5 65 78f102j-rc 1000 ? % 60 0.79 1.20 31.4 60 general speci cations temperature rise .......................... 35 ? ....................................at rated current operating temperature range ............................... -55 ? to +105 ? (including temperature rise) storage temperature range ............................... -55 ? to +105 ? materials core material .................. ferrite dr core wire ....................enamelled copper wire terminal ....................................cu/ni/sn coating .................................epoxy resin packaging standard ................ 5000 pcs. per bag optional ..... 5000 pcs. per 14-inch reel electrical schematic how to order 78f 100 j __ - rc model value code (see table) tolerance code (see table) packaging blank = 5,000 pcs./bag -tr = 5,000 pcs./14?reel rohs compliant examples: ? 78f1r0k-rc = 1.0 mh model 78f packaged 5,000 pcs. per bag. ? 78f100j-tr-rc = 10 mh model 78f packaged 5,000 pcs. per reel.
dimensions: mm (inches) speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. 78f series conformal coated rf choke product dimensions typical part marking - eia color code rev. 10/11 25.40 (1.0) 7.11 (0.28) max. max. min. 25.40 (1.0) min. 2.79 (0.11) 0.51 (0.020) 1st signi cant gure (blue) 2nd signi cant gure (gray) multiplier (gold) tolerance (gold) example for 6.8 ?, ? % 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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