(1/3) 002-02 / 20101028 / e531_vlf302512mt.fm ? all specifications are subject to change without notice. smd inductors(coils) for power line(wound, magnetic shielded) vlf-mt series vlf302512mt with the vlf302512mt series, a dc to dc converter with top- class voltage conversion efficiency for similar size products was achieved by optimizing the magnetic material and configuration. these products are optimal for use as choke coils in switching power supplies such as those in mobile devices requiring space- saving design. features miniature size mount area: 3.0 2.5mm 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. the products contain no lead and also support lead-free soldering. the products is halogen-free. it is a product conforming to rohs directive. applications smartphones, cellular phones, dscs, dvcs, hdds, lcd displays, compact power supply modules, etc. shapes and dimensions recommended pc board pattern circuit diagram product identification (1) series name (2) dimensions l w h mm max. (3) packaging style (4) inductance value (5) inductance tolerance packaging style and quantities handling and precautions before soldering, be sure to preheat components. the preheating temperature should be set so that the temperature difference between the solder temperature and product temperature does not exceed 150c. when hand soldering, apply the soldering iron to the printed circuit board only. temperature of the iron tip should not exceed 350c. soldering time should not exceed 3 seconds. recommended soldering condition reflow soldering conformity to rohs directive weight: 0.033g dimensions in mm ( 0.7 )( 0.7 ) ( 0.8 ) 3.0 0.2 1.2max. 2.5 0.2 ( 1.0 ) 0.9 0.9 0.8 1.45 dimensions in mm vlf 302512m t - 1r0 n (1) (2) (3) (4) (5) t taping (embossed carrier tape) 1r0 1.0 h 100 10 h m20% n30% packaging style quantity taping 2000 pieces/reel natural cooling 10s max. preheating 60 to 120s soldering 30 to 60s 230?c 250 to 260?c 180?c 150?c time(s) please contact our sales office when your application are considered the following: the device?s failure or malfunction may directly endanger human life (e.g. application for automobile/aircraft/medical/nuclear power devices, etc.) 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.
(2/3) 002-02 / 20101028 / e531_vlf302512mt.fm all specifications are subject to change without notice. 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 vlf302512mt-1r0n vlf302512mt-1r5n vlf302512mt-2r2m vlf302512mt-3r3m vlf302512mt-4r7m vlf302512mt-6r8m part no. inductance (h) inductance tolerance(%) test frequency (mhz) dc resistance( ? ) rated current ? (a) max. typ. based on inductance change idc1 based on temperature rise idc2 max. typ. typ. vlf302512mt-1r0n 1.0 30 1.0 0.037 0.031 1.91 2.12 2.77 vlf302512mt-1r5n 1.5 30 1.0 0.044 0.037 1.67 1.85 2.54 vlf302512mt-2r2m 2.2 20 1.0 0.066 0.055 1.26 1.40 1.95 vlf302512mt-3r3m 3.3 20 1.0 0.108 0.090 1.08 1.20 1.63 vlf302512mt-4r7m 4.7 20 1.0 0.136 0.113 0.97 1.08 1.42 vlf302512mt-6r8m 6.8 20 1.0 0.194 0.162 0.78 0.84 1.21 VLF302512MT-100M 10 20 1.0 0.299 0.249 0.62 0.69 0.95 vlf302512mt-150m 15 20 1.0 0.448 0.373 0.51 0.57 0.80 vlf302512mt-220m 22 20 1.0 0.700 0.583 0.43 0.47 0.64 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0 0.5 1 1.5 2 2.5 inductance ( h ) dc current ( a ) 0 0.5 1 1.5 2 0.0 0.5 1.0 1.5 inductance ( h ) dc current ( a ) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 0.5 1 1.5 inductance ( h ) dc current ( a ) 0 0.5 1 0.0 1.0 2.0 0.5 1.5 2.5 3.0 3.5 inductance ( h ) dc current ( a ) 0 0.6 0.4 0.2 0.8 1 1.2 0.0 1.0 2.0 3.0 4.0 5.0 inductance ( h ) dc current ( a ) 0.0 2.0 1.0 4.0 3.0 6.0 5.0 7.0 0 0.2 0.4 0.6 0.8 1 inductance ( h ) dc current ( a )
(3/3) 002-02 / 20101028 / e531_vlf302512mt.fm all specifications are subject to change without notice. typical electrical characteristics inductance vs. dc superposition characteristics VLF302512MT-100M vlf302512mt-150m vlf302512mt-220m test circuit packaging styles reel dimensions tape dimensions dimensions in mm 0 2 4 6 8 10 12 0 0.2 0.4 0.6 0.8 inductance ( h ) dc current ( a ) 0 0.2 0.4 0.6 0 5 10 15 inductance ( h ) dc current ( a ) 0 5 10 15 20 25 0 0.1 0.2 0.3 0.4 0.5 inductance ( h ) dc current ( a ) 1: lcr meter 4285a f=1mhz 2: dc constant current source 1 2 a c=20,000 f l=0.1h sample dimensions in mm 2.0 0.5 ?13 0.2 ?21 0.8 13 1.4 9.0 0.3 ?180 +0 ?3 ?60 +1 ?0 ~ the taping reel dimensions and reusable reel are compliant with eiaj et-7200. a0 b0 w f e 2.8typ. 3.3typ. 8.00 0.2 3.50 0.1 1.75 0.1 p1 p2 h p0 ?d0 4.00 0.1 2.000.05 0.05 to 0.35 4.00.1 1.5+0.1/?0 k ?d1 t r1 to r3 1.350.1 1.20.2 0.250.05 0.3max. 5 typ. w f e a0 h t b0 p0 k p1 p2 ?d1 ?d0 4- r3 2- r2 2- r1 cover type
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