(1/2) SMD Inductors(Coils) Conformity to RoHS Directive For Power Line(Wound, Magnetic Shielded) VLF Series VLF4012A FEATURES SHAPES AND DIMENSIONS (cid:127) Mount area: 3.5×3.7mm 3 Low profile: 1.2mm max. height 4 0. R ± (cid:127) Generic use for portable DC to DC converter line. 7 3.5 (cid:127) High magnetic shield construction should actualize high resolu- 3.7±0.3 1.2max. tion for EMC protection. (Include terminal area) (cid:127) Available for automatic mounting in tape and real package. Dimensions in mm (cid:127) The products contain no lead and also support lead-free soldering. RECOMMENDED PC BOARD PATTERN (cid:127) It is a product conforming to RoHS directive. 3 1. 2.9 APPLICATIONS Power souce inductor for mobile devices such as mobile phones, 4.7 Dimensions in mm HDDs, and DSCs ELECTRICAL CHARACTERISTICS Inductance DC resistance(Ω) Rated current∗1(A) Inductance Test frequency Part No. [at 1/2 Idc1]∗2 Based on inductance Based on temperature tolerance(%) (kHz) max. typ. (µH) change Idc1 max. rise Idc2 typ. VLF4012AT-1R5M1R6 1.5 ±20 100 0.079 0.069 1.8 1.6 VLF4012AT-2R2M1R5 2.2 ±20 100 0.087 0.076 1.5 1.5 VLF4012AT-3R3M1R3 3.3 ±20 100 0.12 0.1 1.3 1.3 VLF4012AT-4R7M1R1 4.7 ±20 100 0.16 0.14 1.1 1.1 VLF4012AT-6R8MR96 6.8 ±20 100 0.23 0.2 0.96 0.97 VLF4012AT-100MR79 10 ±20 100 0.35 0.3 0.80 0.79 VLF4012AT-150MR63 15 ±20 100 0.53 0.46 0.63 0.64 VLF4012AT-220MR51 22 ±20 100 0.82 0.71 0.52 0.51 VLF4012AT-330MR39 33 ±20 100 1.4 1.2 0.44 0.39 VLF4012AT-470MR30 47 ±20 100 2.3 2.0 0.36 0.30 ∗1 Rated current: Value obtained when current flows and the temperature has risen to 40°C or when DC current flows and the nominal value of inductance has fallen by 30%, whichever is smaller. ∗2Inductance is at 1/2 Idc1 power distribution. The L vaule at 0A is higher than the guaranteed performance. (cid:127) Operating temperature range: –40 to +105°C (Including self-temperature rise) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF4012AT-1R5M1R6 VLF4012AT-2R2M1R5 2.0 3.0 2.5 µ)H1.5 µ)H2.0 (e (e nc1.0 nc1.5 a a duct duct1.0 In0.5 In 0.5 0.0 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 DC current(A) DC current(A) (cid:127) 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. • All specifications are subject to change without notice. 002-03 / 20080629 / e531_vlf4012a.fm

(2/2) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF4012AT-3R3M1R3 VLF4012AT-4R7M1R1 4.0 6.0 5.0 µ()InductanceH123...000 µ()InductanceH234...000 1.0 0.0 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 DC current(A) DC current(A) VLF4012AT-6R8MR96 VLF4012AT-100MR79 12 8.0 10 )H6.0 µ)H 8 µ(nce4.0 (ance 6 ucta duct 4 nd2.0 In I 2 0.0 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 DC current(A) DC current(A) VLF4012AT-150MR63 VLF4012AT-220MR51 20 30 25 )H15 )H µ µ20 (e (e c c n10 n15 a a ct ct du du10 In 5 In 5 0 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 DC current(A) DC current(A) VLF4012AT-330MR39 VLF4012AT-470MR30 50 60 50 40 µ()InductanceH123000 µ()InductanceH12340000 0 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.0 0.1 0.2 0.3 0.4 0.5 DC current(A) DC current(A) TEST CIRCUIT C=20,000µF A L=0.1H 2 1 Sample 1: LCR meter 4285A=100kHz 2: DC constant current (cid:127) All specifications are subject to change without notice. 002-03 / 20080629 / e531_vlf4012a.fm