*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 77f series conformal coated rf choke 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 electrical specifications (@ 25 c) general specifications temperature rise .................35 c at idc operating temperature ..-55 c to +105 c storage temperature......-55 c to +105 c dielectric strength....................500 vrms materials core...............................................ferrite wire ..............................polyester copper terminal coating .............sn-ag-cu alloy coating .................................epoxy resin packaging standard..................5000 pcs. per bag optional ......5000 pcs. per 14-inch reel *rohs compliant inductance test srf dcr ( h) tol. (%) q frequency (mhz) ( ? ? )idc bourns part no. min. (mhz) min. max. (ma) 77f-1r0k-rc 1.0 10 45 25.2 157 0.17 920 77f-1r2k-rc 1.2 10 50 7.96 144 0.21 880 77f-1r5k-rc 1.5 10 50 7.96 131 0.23 830 77f-1r8k-rc 1.8 10 55 7.96 121 0.25 790 77f-2r2k-rc 2.2 10 55 7.96 110 0.28 750 77f-2r7k-rc 2.7 10 60 7.96 100 0.30 720 77f-3r3k-rc 3.3 10 65 7.96 94 0.34 670 77f-3r9k-rc 3.9 10 65 7.96 86 0.37 640 77f-4r7k-rc 4.7 10 70 7.96 80 0.39 620 77f-5r6k-rc 5.6 10 70 7.96 74 0.43 590 77f-5r8k-rc 6.8 10 75 7.96 68 0.48 550 77f-8r2k-rc 8.2 10 80 7.96 53 0.52 530 77f-100k-rc 10 10 85 7.96 45 0.58 500 77f-120k-rc 12 10 75 2.52 34 0.63 480 77f-150k-rc 15 10 70 2.52 20 0.72 460 77f-180k-rc 18 10 65 2.52 14 0.77 430 77f-220k-rc 22 10 60 2.52 9.9 0.84 410 77f-270k-rc 27 10 55 2.52 7.6 0.94 390 77f-330j-rc 33 5 55 2.52 6.3 1.03 370 77f-390j-rc 39 5 50 2.52 6.3 1.12 350 77f-470j-rc 47 5 45 2.52 6.3 1.22 340 77f-560j-rc 56 5 40 2.52 6.2 1.34 320 77f-680j-rc 68 5 40 2.52 5.7 1.47 305 77f-820j-rc 82 5 35 2.52 5.3 1.62 290 77f-101j-rc 100 5 30 0.796 4.8 1.80 275 77f-121j-rc 120 5 70 0.796 3.8 3.7 185 77f-151j-rc 150 5 70 0.796 3.5 4.2 175 77f-181j-rc 180 5 70 0.796 3.3 4.6 165 77f-221j-rc 220 5 70 0.796 3.0 5.1 155 77f-271j-rc 270 5 65 0.796 2.8 5.8 145 77F-331J-RC 330 5 65 0.796 2.6 6.4 137 77f-391j-rc 390 5 65 0.796 2.4 7.0 133 77f-471j-rc 470 5 60 0.796 2.25 7.7 126 77f-561j-rc 560 5 60 0.796 2.10 8.5 120 77f-681j-rc 680 5 55 0.796 1.95 9.4 113 77f-821j-rc 820 5 55 0.796 1.85 10.5 105 77f-102j-rc 1000 5 50 0.796 1.40 14.0 100 electrical schematic j.w. miller how to order 77f - 151j - __ - rc model value code (see table) packaging code blank = 5000 pcs./bag tr = 5000 pcs./14-inch reel compliance code rc = rohs compliant* examples: 77f-151j-rc = 150 h packaged 5000 pcs./bag. 77f-102j-tr-rc = 1000 h packaged 5000 pcs./ 14-inch reel.
specifications are subject to change without notice. customers should verify actual device performance in their specific 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. dimensions: mm (inches) typical part marking - eia color code 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 10 % 5 % 1st signit cant t gure (blue) 2nd signit cant t gure (gray) multiplier (gold) tolerance (silver) example for l value less than 10 h 6.8 h, 10 % example for l value 10 h and higher 270 h, 5 % 1st signit cant t gure (red) 2nd signit cant t gure (purple) multiplier (brown) tolerance (gold) rev. 04/08
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