(1/1) 002-03 / 20080629 / e531_vlf4014a.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlf series vlf4014a features mount area: 3.5 3.7mm low profile: 1.4mm max. height 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 contain no lead and also support lead-free soldering. it is a product conforming to rohs directive. applications power souce inductor for mobile devices such as mobile phones, hdds, and dscs 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. typical electrical characteristics inductance vs. dc superposition characteristics vlf4014at-4r7m1r1 VLF4014AT-100MR90 test circuit conformity to rohs directive 4r7 1.4max. 3.7 0.3 3.5 0.3 dimensions in mm 4.7 2.9 1.3 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. vlf4014at-4r7m1r1 4.7 20 100 0.16 0.14 1.2 1.1 VLF4014AT-100MR90 10 20 100 0.26 0.23 0.9 0.9 0 1 2 3 4 5 6 0 200 400 600 800 1000 1200 1400 1600 inductance ( h ) dc current ( ma ) 0 2 4 6 8 10 12 14 0 200 400 600 800 1000 1200 inductance ( h ) dc current ( ma ) 1: lcr meter 4285a=100khz 2: dc constant current 1 2 a c=20,000 f l=0.1h sample 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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