(1/1) 001-04 / 20060612 / e531_vlcf4018_2.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlcf series vlcf4018-2 features miniature size mount area: 4 4mm height: 1.8mm max. generic use for portable dc to dc converter line high magnetic shield construction should actualize high resolu- tion for emc protection. available for automatic mounting in tape and real package. the products do not contain lead and support lead-free solder- ing. applications dc to dc converters for dvc, dsc, pda, md, lcd displays, hdds, etc. shapes and dimensions recommended pc board pattern electrical characteristics ? rated current: value obtained when current flows and the temperature has risen to 40c or when dc current flows and the nominal value of inductance has fallen by 30%, whichever is smaller. operating temperature range: ?40 to +105c (including self-temperature rise) conformity to rohs directive 4.0 0.1 4.3max. ( include solder ) 4.0 0.1 1.8max. dimensions in mm 4r7 2.5 45? 3.9 1.6 1.6 1.3 4.5 dimensions in mm part no. inductance (h) inductance tolerance(%) test frequency (khz) dc resistance( ? ) rated current(a) ? max. typ. based on inductance change max. based on temperature rise typ. vlcf4018t-1r6n1r7-2 1.6 30 100 0.051 0.044 1.72 2.42 vlcf4018t-2r2n1r4-2 2.2 30 100 0.06 0.052 1.44 2.23 vlcf4018t-3r3n1r2-2 3.3 30 100 0.079 0.069 1.26 1.93 VLCF4018T-4R7N1R0-2 4.7 30 100 0.101 0.088 1.07 1.72 vlcf4018t-6r8nr94-2 6.8 30 100 0.124 0.108 0.94 1.55 vlcf4018t-100mr74-2 10 20 100 0.188 0.163 0.74 1.26 vlcf4018t-150mr59-2 15 20 100 0.268 0.233 0.59 1.1 vlcf4018t-220mr49-2 22 20 100 0.369 0.321 0.49 0.9 vlcf4018t-330mr42-2 33 20 100 0.54 0.469 0.42 0.74 vlcf4018t-470mr34-2 47 20 100 0.76 0.661 0.34 0.62 conformity to rohs directive: this means that, in conformity with eu directive 2002/95/ec, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, pbb and pbde, have not been used, except for exempted applications.
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