4R7 (1/2) Conformity to RoHS Directive SMD Inductors(Coils) For Power Line(Wound, Magnetic Shielded) VLF Series VLF4012A FEATURES SHAPES AND DIMENSIONS Mount area: 3.5 3.7mm Low profile: 1.2mm max. height Generic use for portable DC to DC converter line. High magnetic shield construction should actualize high resolu- 3.70.3 1.2max. tion for EMC protection. ( ) Include terminal area Dimensions in mm Available for automatic mounting in tape and real package. The products contain no lead and also support lead-free soldering. RECOMMENDED PC BOARD PATTERN It is a product conforming to RoHS directive. 2.9 APPLICATIONS 4.7 Dimensions in mm Power souce inductor for mobile devices such as mobile phones, HDDs, and DSCs ELECTRICAL CHARACTERISTICS 1 DC resistance( ) Rated current (A) Inductance Inductance Test frequency 2 Part No. at 1/2 Idc1 Based on inductance Based on temperature tolerance(%) (kHz) max. typ. (H) 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-150MR6315 20 100 0.530.460.63 0.64 VLF4012AT-220MR5122 20 100 0.820.710.52 0.51 VLF4012AT-330MR3933 20 100 1.41.20.44 0.39 VLF4012AT-470MR3047 20 100 2.32.00.36 0.30 1 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. 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) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF4012AT-1R5M1R6 VLF4012AT-2R2M1R5 2.0 3.0 2.5 1.5 2.0 1.5 1.0 1.0 0.5 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 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 ( ) Inductance H ( ) Inductance H 3.50.3 1.3(2/2) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF4012AT-3R3M1R3 VLF4012AT-4R7M1R1 6.0 4.0 5.0 3.0 4.0 3.0 2.0 2.0 1.0 1.0 0.0 0.0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 ( ) ( ) DC current A DC current A VLF4012AT-6R8MR96 VLF4012AT-100MR79 12 8.0 10 6.0 8 6 4.0 4 2.0 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 15 20 10 15 10 5 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 60 50 50 40 40 30 30 20 20 10 10 0 0 0.0 0.1 0.2 0.3 0.4 0.5 0.0 0.1 0.2 0.3 0.4 0.5 0.6 DC current(A) ( ) DC current A TEST CIRCUIT C=20,000F A L=0.1H 2 1 Sample 1: LCR meter 4285A=100kHz 2: DC constant current All specifications are subject to change without notice. 002-03 / 20080629 / e531 vlf4012a.fm ( ) Inductance H Inductance(H) ( ) ( ) Inductance H Inductance H ( ) ( ) ( ) ( ) Inductance H Inductance H Inductance H Inductance H