(1/2) 002-03 / 20080629 / e531_vlf3010a_1.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlf series vlf3010a-1 features miniature size mount area: 2.6 2.8mm low profile: 1.0mm 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:the rated current is the smaller of the values given based on the rate of inductance change (30% decrease from th e initial value) or the temperature rise (temperature rise of 40c caused by the heat generated by the product itself). ? 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) conformity to rohs directive 4r7 1.0max. 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. vlf3010at-1r5n1r2-1 1.5 30% 100 0.078 0.068 1.2 1.5 vlf3010at-2r2m1r0-1 2.2 20% 100 0.12 0.10 1.0 1.2 VLF3010AT-3R3MR87-1 3.3 20% 100 0.17 0.15 0.87 1.0 vlf3010at-4r7mr70-1 4.7 20% 100 0.28 0.24 0.70 0.82 vlf3010at-6r8mr61-1 6.8 20% 100 0.39 0.34 0.61 0.68 vlf3010at-100mr49-1 10.0 20% 100 0.67 0.58 0.49 0.52 vlf3010at-150mr40-1 15.0 20% 100 0.86 0.75 0.40 0.46 vlf3010at-220mr33-1 22.0 20% 100 1.5 1.3 0.33 0.35 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_vlf3010a_1.fm all specifications are subject to change without notice. typical electrical characteristics inductance change vs. dc superposition characteristics impedance vs. frequency characteristics inductance vs. frequency characteristics q vs. frequency characteristics test equipment: yhp4194a impedance/gain-phase analyzer(10khz to 40mhz) test circuit 0 5 10 15 35 30 25 20 inductance ( h ) 4.7 h 22 h 0 0.2 0.4 0.6 0.8 0.1 0.3 0.5 0.7 dc current ( a ) 0.1 1 10 100 1000 10000 40 100 1000 10000 100000 frequency ( khz ) impedance ( ? ) 100000 2.2 h 4.7 h 10 h 22 h 0 80 60 40 20 70 50 30 10 40 100 1000 10000 100000 frequency ( khz ) inductance ( h ) 2.2 h 4.7 h 10 h 22 h 40 100 1000 10000 100000 frequency ( khz ) 0 50 40 30 20 10 q 2.2 h 4.7 h 10 h 22 h 1: lcr meter 4285a=100khz 2: dc constant current 1 2 a c=20,000 f l=0.1h sample
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