(1/2) 002-03 / 20080629 / e531_VLF3012A.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlf series VLF3012A features miniature size mount area: 2.6 2.8mm low profile: 1.2mm 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 ? 1 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. ? 2 inductance is at 1/2 idc1 power distribution. the l vaule at 0a is higher than the guaranteed performance. operating temperature range: ?40 to +105c (including self-temperature rise) typical electrical characteristics inductance vs. dc superposition characteristics VLF3012At-1r5n1r2 VLF3012At-2r2m1r0 conformity to rohs directive 4r7 1.2max. ( include terminal area ) 2.8 0.2 2.6 0.2 dimensions in mm 3.4 2.1 1.2 dimensions in mm part no. inductance [at 1/2 idc1] ? 2 (h) inductance tolerance(%) test frequency (khz) dc resistance( ? ) rated current ? 1 (a) max. typ. based on inductance change idc1 max. based on temperature rise idc2 typ. VLF3012At-1r5n1r2 1.5 30 100 0.068 0.059 1.2 1.6 VLF3012At-2r2m1r0 2.2 20 100 0.1 0.088 1.0 1.3 VLF3012At-3r3mr87 3.3 20 100 0.13 0.11 0.87 1.2 VLF3012At-4r7mr74 4.7 20 100 0.19 0.16 0.74 0.98 VLF3012At-6r8mr59 6.8 20 100 0.27 0.23 0.59 0.83 VLF3012At-100mr49 10 20 100 0.41 0.36 0.49 0.67 VLF3012At-150mr41 15 20 100 0.62 0.54 0.41 0.54 VLF3012At-220mr33 22 20 100 0.76 0.66 0.33 0.49 VLF3012At-330mr27 33 20 100 1.3 1.1 0.27 0.38 VLF3012At-470mr22 47 20 100 2.2 1.9 0.22 0.29 0.0 0.5 1.0 1.5 2.0 2.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 inductance ( h ) dc current ( a ) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 inductance ( h ) dc current ( a ) 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.
(2/2) 002-03 / 20080629 / e531_VLF3012A.fm all specifications are subject to change without notice. typical electrical characteristics inductance vs. dc superposition characteristics VLF3012At-3r3mr87 VLF3012At-4r7mr74 VLF3012At-6r8mr59 VLF3012At-100mr49 VLF3012At-150mr41 VLF3012At-220mr33 VLF3012At-330mr27 VLF3012At-470mr22 test circuit 0 1 2 3 4 5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 inductance ( h ) dc current ( a ) 0 2 4 6 8 0.0 0.2 0.4 0.6 0.8 1.0 inductance ( h ) dc current ( a ) 0 2 4 6 8 10 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 inductance ( h ) dc current ( a ) 0 5 10 15 0.0 0.1 0.2 0.3 0.4 0.5 0.6 inductance ( h ) dc current ( a ) 0 5 10 15 20 0.0 0.1 0.2 0.3 0.4 0.5 0.6 inductance ( h ) dc current ( a ) 0 10 20 30 0.0 0.1 0.2 0.3 0.4 inductance ( h ) dc current ( a ) 0 10 20 30 40 50 0.0 0.1 0.2 0.3 0.4 inductance ( h ) dc current ( a ) 0 10 20 30 40 50 60 0.00 0.05 0.10 0.15 0.20 0.25 0.30 inductance ( h ) dc current ( a ) 1: lcr meter 4285a=100khz 2: dc constant current 1 2 a c=20,000 f l=0.1h sample
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