I N D U C T O R S January 2015 Inductors for Power Circuits Wound Ferrite VLF-M Series VLF302515MT Type VLF302515MT (2/9) I N D U C T O R S REMINDERS FOR USING THESE PRODUCTS Before using these products, be sure to request the delivery specifications. SAFETY REMINDERS Please pay sufficient attention to the warnings for safe designing when using these products. REMINDERS The storage period is less than 12 months. Be sure to follow the storage conditions (Temperature: 5 to 40°C, Humidity: 10 to 75% RH or less). If the storage period elapses, the soldering of the terminal electrodes may deteriorate. Do not use or store in locations where there are conditions such as gas corrosion (salt, acid, alkali, etc.). Before soldering, be sure to preheat components. The preheating temperature should be set so that the temperature difference between the solder temperature and chip temperature does not exceed 150°C. Soldering corrections after mounting should be within the range of the conditions determined in the specifications. If overheated, a short circuit, performance deterioration, or lifespan shortening may occur. When embedding a printed circuit board where a chip is mounted to a set, be sure that residual stress is not given to the chip due to the overall distortion of the printed circuit board and partial distortion such as at screw tightening portions. Self heating (temperature increase) occurs when the power is turned ON, so the tolerance should be sufficient for the set thermal design. Carefully lay out the coil for the circuit board design of the non-magnetic shield type. A malfunction may occur due to magnetic interference. Use a wrist band to discharge static electricity in your body through the grounding wire. Do not expose the products to magnets or magnetic fields. Do not use for a purpose outside of the contents regulated in the delivery specifications. The products listed on this catalog are intended for use in general electronic equipment (AV equipment, telecommunications equipment, home appliances, amusement equipment, computer equipment, personal equipment, office equipment, measurement equipment, industrial robots) under a normal operation and use condition. The products are not designed or warranted to meet the requirements of the applications listed below, whose performance and/or quality require a more stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage to society, person or property. If you intend to use the products in the applications listed below or if you have special requirements exceeding the range or conditions set forth in the each catalog, please contact us. (1) Aerospace/Aviation equipment (2) Transportation equipment (cars, electric trains, ships, etc.) (3) Medical equipment (4) Power-generation control equipment (5) Atomic energy-related equipment (6) Seabed equipment (7) Transportation control equipment (8) Public information-processing equipment (9) Military equipment (10) Electric heating apparatus, burning equipment (11) Disaster prevention/crime prevention equipment (12) Safety equipment (13) Other applications that are not considered general-purpose applications When designing your equipment even for general-purpose applications, you are kindly requested to take into consideration securing protection circuit/device or providing backup circuits in your equipment. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (3/9) I N D U C T O R S Inductors for Power Circuits Product compatible with RoHS directive Halogen-free Compatible with lead-free solders Wound Ferrite Overview of VLF302515MT Type FEATURES Magnetic shield type wound inductor for power circuits. A DC-DC converter with top-class voltage conversion efficiency for similar products was achieved by optimizing the magnetic material and configuration. Low-profile product. High magnetic shield construction and compatible with high-density mounting. Halogen-free compatible product. APPLICATION Smart phones, tablet terminals, HDDs, SSDs, DVCs, DSCs, mobile display panels, portable game devices, compact power supply modules, other PART NUMBER CONSTRUCTION VLF Series name 302515 L×W×H Dimensions (mm max.) 302515 3.0×2.5×1.5 M T internal code Packaging style T - Taping R47 N Inductance (μH) R47 0.47 1R5 1.5 220 22 Inductance tolerance M ±20% N ±30% OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT Temperature range Package quantity Operating Storage temperature temperature (pieces/reel) （°C） （°C） VLF302515MT –40 to +105 –40 to +105 2000 Operating temperature range includes self-temperature rise. The Storage temperature range is for after the circuit board is mounted. Individual weight Type （g） 0.041 RoHS Directive Compliant Product: See the following for more details related to RoHS Directive compliant products. http://product.tdk.com/en/environment/rohs/ Halogen-free: Indicates that Cl content is less than 900ppm, Br content is less than 900ppm, and that the total Cl and Br content is less than 1500ppm. Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (4/9) I N D U C T O R S VLF302515MT Type RECOMMENDED REFLOW PROFILE Preheating Soldering Natural cooling Peak T: Temperature T4 T3 T2 T3 t3 T1 t1 t2 t: Time Preheating Temp. T1 T2 150°C 180°C Time t1 60 to 120s Soldering Temp. Time T3 t2 230°C 30s Peak Temp. T4 260°C Time t3 10s Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (5/9) I N D U C T O R S VLF302515MT Type SHAPE & DIMENSIONS (1.0) 3.0±0.2 2.5±0.2 1.5max. (0.7) (0.8) (0.7) Dimensions in mm 1.45 RECOMMENDED LAND PATTERN 0.9 0.8 0.9 Dimensions in mm Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (6/9) I N D U C T O R S VLF302515MT Type ELECTRICAL CHARACTERISTICS CHARACTERISTICS SPECIFICATION TABLE L (μH) 0.47 1.0 1.5 2.2 3.3 4.7 6.8 10.0 15.0 22.0 Tolerance ±30% ±30% ±30% ±20% ±20% ±20% ±20% ±20% ±20% ±20% Measuring frequency DC resistance Rated current (MHz) 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 ( )max. 0.020 0.030 0.038 0.050 0.072 0.090 0.16 0.18 0.33 0.49 Idc1 (A)max. 2.88 1.94 1.66 1.41 1.11 0.93 0.77 0.64 0.50 0.41 ( )typ. 0.017 0.025 0.032 0.042 0.060 0.075 0.13 0.15 0.28 0.41 Idc1 (A)typ. 3.18 2.15 1.84 1.57 1.23 1.03 0.86 0.71 0.56 0.46 Part No. Idc2 (A)typ. 4.00 3.31 3.14 2.71 2.25 1.95 1.45 1.37 0.99 0.75 VLF302515MT-R47N VLF302515MT-1R0N VLF302515MT-1R5N VLF302515MT-2R2M VLF302515MT-3R3M VLF302515MT-4R7M VLF302515MT-6R8M VLF302515MT-100M VLF302515MT-150M VLF302515MT-220M Rated current: smaller value of either Idc1 or Idc2. Idc1: When based on the inductance change rate (30% below the nominal value) Idc2: When based on the temperature increase (Temperature increase of 40°C by self heating) ○ Measurement equipment Measurement item Product No. L 4294A DC resistance VP-2941A Rated current Idc1 4285A+42841A+42842C ＊ Equivalent measurement equipment may be used. Manufacturer Agilent Technologies Panasonic Agilent Technologies Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (7/9) I N D U C T O R S VLF302515MT Type ELECTRICAL CHARACTERISTICS L FREQUENCY CHARACTERISTICS GRAPH 100 220M 150M 100M 6R8M Inductance(μH) 10 4R7M 3R3M 2R2M 1R5N 1R0N 1 0.1 0.1 1 10 100 Frequency(MHz) ○ Measurement equipment Product No. Manufacturer 4294A Agilent Technologies ＊ Equivalent measurement equipment may be used. Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (8/9) I N D U C T O R S VLF302515MT Type ELECTRICAL CHARACTERISTICS INDUCTANCE VS. DC BIAS CHARACTERISTICS GRAPH 30 25 Inductance(μH) 220M 20 15 150M 10 100M 6R8M 5 4R7M 3R3M 0 0 0.5 1 2R2M 1.5 DC current (A) 1R5N 1R0N 2 R47N 2.5 3 ○ Measurement equipment Product No. Manufacturer 4285A+42841A+42842C Agilent Technologies ＊ Equivalent measurement equipment may be used. Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm (9/9) I N D U C T O R S VLF302515MT Type PACKAGING STYLE REEL DIMENSIONS 2.0±0.5 E Type VLF302515MT A ø180 W1 9 W2 13 N ø60 E 0.5 N * These values are typical values. (1.0) ø13.0±0.5 W1 ø21.0±0.8 W2 A Dimensions in mm TAPE DIMENSIONS P2 P0 K P1 t A Type A VLF302515MT 2.8 B 3.3 B W F E øD0 øD0 1.5+0.1/-0 Dimensions in mm E F P0 P1 P2 1.75±0.1 3.50±0.1 4.0±0.1 4.00±0.1 2.00±0.05 W 8.00±0.2 K 1.65 t 0.25 Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use. Please note that the contents may change without any prior notice due to reasons such as upgrading. 20150105 / inductor_commercial_power_vlf302515mt_en.fm