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| (1/2) 001-03 / 20050904 / e531_vlf4012a_2.fm Inductors For Power Line SMD FEATURES * Miniature size Mount area: 3.5x3.7mm Low profile: 1.2mm max. height * Generic use for portable DC to DC converter line * High magnetic shield construction should actualize high resolution for EMC protection. * Available for automatic mounting in tape and real package. * The products do not contain lead and support lead-free soldering. APPLICATIONS DVCs, DSCs, PDAs, LCD displays, Cellular phones, HDDs, etc. ELECTRICAL CHARACTERISTICS VLF Series VLF4012A-2 Type SHAPES AND DIMENSIONS 3.50.3 4R7 3.70.3 1.2max. (Include terminal area) Dimensions in mm RECOMMENDED PC BOARD PATTERN 1.3 2.9 4.7 Dimensions in mm Rated current(A) Based on inductance Based on temperature max. typ. change max. rise typ. VLF4012AT-3R3M1R0-2 3.3 20 100 0.11 0.095 1.0 1.4 VLF4012AT-4R7MR82-2 4.7 20 100 0.15 0.12 0.82 1.2 VLF4012AT-6R8MR74-2 6.8 20 100 0.20 0.17 0.74 1.0 VLF4012AT-100MR50-2 10 20 100 0.23 0.20 0.5 0.97 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) Part No. Inductance (H) Inductance tolerance(%) Test frequency (kHz) DC resistance() * All specifications are subject to change without notice. (2/2) 001-03 / 20050904 / e531_vlf4012a_2.fm Inductors For Power Line SMD TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF4012AT-3R3M1R0-2 4.0 3.5 3.0 Inductance(H) VLF Series VLF4012A-2 Type VLF4012AT-4R7MR82-2 6.0 5.0 Inductance(H) 4.0 3.0 2.0 1.0 0.0 0.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.2 0.4 0.6 0.8 DC current (A) 1.0 1.2 0.2 0.4 0.6 0.8 DC current (A) 1.0 1.2 VLF4012AT-6R8MR74-2 VLF4012AT-100MR50-2 14 8.0 Inductance(H) Inductance(H) 12 10 8 6 4 2 6.0 4.0 2.0 0 0.0 0.0 0.0 0.2 0.4 0.6 DC current (A) 0.8 1.0 0.1 0.2 0.3 0.4 0.5 DC current (A) 0.6 0.7 0.8 TEST CIRCUIT C=20,000F A 2 Sample 1: LCR meter 4285A=100kHz 2: DC constant current L=0.1H 1 * All specifications are subject to change without notice. |
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