(1/2) 002-04 / 20080821 / e531_vlf3014a.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlf series vlf3014a features mount area: 2.6 2.8mm 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 ? 1 rated current based on inductance variation: current when inductance decreases by 30% of the initial value due to direct curren t superimposed characteristics ? 2 rated current based on increasing product temperature: current when temperature of the product reaches +40c ? 3 rated current based on inductance variation: current when inductance decreases by 10% of the initial value due to direct curren t superimposed characteristics ? 4 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 VLF3014AT-1R0N1R8 vlf3014at-2r2m1r2 conformity to rohs directive 4r7 1.4max. 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] ? 4 (h) inductance tolerance(%) test frequency (khz) dc resistance( ? ) rated current(a) max. typ. based on inductance change idc1 max. ? 1 based on temperature rise idc2 typ. ? 2 based on inductance change idc3 typ. ? 3 VLF3014AT-1R0N1R8 1 30 100 0.048 0.042 2.5 1.8 2.5 vlf3014at-2r2m1r2 2.2 20 100 0.1 0.091 1.7 1.2 1.6 vlf3014at-3r3m1r0 3.3 20 100 0.15 0.13 1.3 1 1.1 vlf3014at-4r7mr90 4.7 20 100 0.2 0.17 1.2 0.9 0.8 vlf3014at-6r8mr72 6.8 20 100 0.31 0.27 1 0.72 0.78 vlf3014at-100mr59 10 20 100 0.46 0.4 0.8 0.59 0.65 vlf3014at-220mr37 22 20 100 1.20 1 0.52 0.37 0.43 0.0 0.2 0.4 0.6 0.8 1.4 1.0 1.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 inductance ( h ) dc current ( a ) 0.0 0.5 1.0 1.5 2.0 3.0 2.5 0.0 0.5 1.0 1.5 2.0 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) 002-04 / 20080821 / e531_vlf3014a.fm all specifications are subject to change without notice. typical electrical characteristics inductance vs. dc superposition characteristics vlf3014at-3r3m1r0 vlf3014at-4r7mr90 vlf3014at-6r8mr72 vlf3014at-100mr59 vlf3014at-220mr37 test circuit 0 1 2 4 3 0.0 0.4 0.2 0.6 0.8 1.0 1.2 1.4 1.6 inductance ( h ) dc current ( a ) 0 1 2 7 3 4 5 6 0.0 0.4 0.2 0.6 0.8 1.0 1.2 1.4 inductance ( h ) dc current ( a ) 0 2 10 4 8 6 0.0 0.4 0.2 0.6 0.8 1.0 1.2 inductance ( h ) dc current ( a ) 0 2 12 10 4 8 6 0.0 0.4 0.2 0.6 0.8 1.0 inductance ( h ) dc current ( a ) 0 5 30 25 10 20 15 0.0 0.4 0.5 0.2 0.3 0.1 0.6 inductance ( h ) dc current ( a ) 1: lcr meter 4285a f=100khz 2: dc constant current 1 2 a c=20,000 f l=0.1h sample
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