? all specifications are subject to change without notice. (1/2) 001-03 / 20050904 / e531_vlf3012a.fm inductors vlf series vlf3012a type for power line smd 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 do not contain lead and support lead-free solder- ing. applications dvcs, dscs, pdas, lcd displays, cellular phones, 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) typical electrical characteristics inductance vs. dc superposition ? characteristics vlf3012at-1r5n1r2 vlf3012at-2r2m1r0 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 (h) inductance tolerance(%) test frequency (khz) dc resistance( ? ) rated current(a) ? max. typ. based on inductance change max. based on temperature rise 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 )
all specifications are subject to change without notice. (2/2) 001-03 / 20050904 / e531_vlf3012a.fm inductors vlf series vlf3012a type for power line smd 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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