(1/3) SMD Inductors(Coils) For Power Line(Wound, Magnetic Shielded) Conformity to RoHS Directive VLF-MT Series VLF302510MT With the VLF302510MT Series, a DC to DC converter with topclass 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 spacesaving design. PRODUCT IDENTIFICATION VLF 302510M T - 1R0 N (1) (2) (3) (4) (5) (1) Series name (2) Dimensions L×W×H mm max. FEATURES • Miniature size Mount area: 3.0×2.5mm Low profile: 1.0mm max. height • Generic use for portable DC to DC converter line. • High magnetic shield construction should actualize high resolution 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. (1.0) 3.0±0.2 2.5±0.2 1.0max. (0.7) (0.8) Taping (Embossed carrier tape) T (4) Inductance value 1R0 100 1.0µH 10µH (5) Inductance tolerance M N ±20% ±30% PACKAGING STYLE AND QUANTITIES Packaging style Taping Quantity 2000 pieces/reel 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 150°C. • When hand soldering, apply the soldering iron to the printed circuit board only. Temperature of the iron tip should not exceed 350°C. Soldering time should not exceed 3 seconds. SHAPES AND DIMENSIONS (0.7) (3) Packaging style Weight: 0.026g Dimensions in mm RECOMMENDED SOLDERING CONDITION REFLOW SOLDERING 1.45 RECOMMENDED PC BOARD PATTERN 0.9 10s max. 250 to 260˚C 0.9 0.8 Dimensions in mm CIRCUIT DIAGRAM Natural cooling 230˚C 180˚C 150˚C Preheating 60 to 120s Soldering 30 to 60s Time(s) • 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. • 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.) • All specifications are subject to change without notice. 002-02 / 20101028 / e531_vlf302510mt.fm (2/3) ELECTRICAL CHARACTERISTICS Rated current∗(A) Based on inductance change Idc1 max. typ. 2.00 2.22 1.49 1.65 1.23 1.37 1.09 1.21 0.86 0.95 0.73 0.81 0.59 0.65 0.47 0.52 0.38 0.42 DC resistance(Ω ) Part No. Inductance (µH) Inductance tolerance(%) Test frequency (MHz) max. typ. VLF302510MT-1R0N VLF302510MT-1R5N VLF302510MT-2R2M VLF302510MT-3R3M VLF302510MT-4R7M VLF302510MT-6R8M VLF302510MT-100M VLF302510MT-150M VLF302510MT-220M 1.0 1.5 2.2 3.3 4.7 6.8 10 15 22 ±30 ±30 ±20 ±20 ±20 ±20 ±20 ±20 ±20 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.040 0.066 0.084 0.126 0.168 0.258 0.372 0.600 0.876 0.033 0.055 0.070 0.105 0.140 0.215 0.310 0.500 0.730 Based on temperature rise Idc2 typ. 2.13 1.65 1.50 1.20 1.08 0.84 0.73 0.55 0.45 ∗ 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) VLF302510MT-1R5N 1.0 2.0 0.8 1.5 Inductance(µH) Inductance(µH) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF302510MT-1R0N 0.6 0.4 0.2 0.0 0 0.5 1 1.5 DC current (A) 2 2.5 4.0 2.0 3.0 1.5 1.0 0.5 0.0 0 0 0.5 1 DC current (A) 0.5 1 1.0 0.0 1.5 VLF302510MT-4R7M 0 0.5 1 1.5 DC current (A) VLF302510MT-6R8M 8.0 5.0 4.0 Inductance(µH) Inductance(µH) 2 2.0 DC current (A) 3.0 2.0 1.0 0.0 1.5 VLF302510MT-3R3M Inductance(µH) Inductance(µH) 0.5 0.0 2.5 VLF302510MT-2R2M 1.0 0 0.2 0.4 0.6 0.8 DC current (A) 1 1.2 6.0 4.0 2.0 0.0 0 0.2 0.4 0.6 DC current (A) 0.8 1 • All specifications are subject to change without notice. 002-02 / 20101028 / e531_vlf302510mt.fm (3/3) TYPICAL ELECTRICAL CHARACTERISTICS INDUCTANCE vs. DC SUPERPOSITION CHARACTERISTICS VLF302510MT-100M VLF302510MT-150M 12 20 Inductance(µH) Inductance(µH) 10 8 6 4 15 10 5 2 0 0 0.2 0.4 DC current (A) 0 0.8 0.6 VLF302510MT-220M 0 0.1 0.3 0.4 DC current (A) 0.6 0.5 TEST CIRCUIT C=20,000µF 25 A Inductance(µH) 0.2 20 2 15 L=0.1H Sample 1 1: LCR meter 4285A f=1MHz 2: DC constant current source 10 5 0 0 0.1 0.2 0.3 DC current (A) 0.4 0.5 PACKAGING STYLES REEL DIMENSIONS TAPE DIMENSIONS +0 ø180 –3 øD0 P2 P0 P1 K E ø21±0.8 øD1 B0 W 2.0±0.5 θ F ø13±0.2 4-R3 t ø60 –0 +1 Cover type 2-R2 A0 2-R1 H Dimensions in mm A0 2.8typ. 9.0±0.3 ・The taping reel dimensions and reusable reel are compliant with EIAJ ET-7200. 13±1.4 B0 3.3typ. W 8.00± 0.2 F 3.50± 0.1 E 1.75± 0.1 Dimensions in mm P1 4.00± 0.1 P2 2.00±0.05 H 0.05 to 0.35 K 1.15±0.1 øD1 1.2±0.2 t 0.25±0.05 P0 4.0±0.1 R1 to R3 0.3max. øD0 1.5+0.1/–0 θ 5° typ. • All specifications are subject to change without notice. 002-02 / 20101028 / e531_vlf302510mt.fm