VLF4012AT-4R7MR82-2

(1/2) 001-03 / 20050904 / e531_vlf4012a_2.fm Inductors For Power Line SMD FEATURES • Miniature size 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 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 3.5±0.3 4R7 3.7±0.3 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 40°C or when DC current flows and the nominal value of inductance has fallen by 30%, whichever is smaller. • Operating temperature range: –40 to +105°C (Including self-temperature rise) Part No. Inductance (µH) Inductance tolerance(%) Test frequency (kHz) DC resistance(Ω) • 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(µH) VLF Series VLF4012A-2 Type VLF4012AT-4R7MR82-2 6.0 5.0 Inductance(µH) 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(µH) Inductance(µH) 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 A 2 Sample 1: LCR meter 4285A=100kHz 2: DC constant current C=20,000µF L=0.1H 1 • All specifications are subject to change without notice.