I N D U C T O R S June 2017 Inductors for Power Circuits Wound Ferrite VLF-M Series VLF302512MT Type VLF302512MT Caution The products in this catalog will be or have been stopped production Discontinue Issue Date May 18, 2017 Last Purchase Order Date Mar. 29, 2019 Last Shipment Date Sep. 30, 2019 Please refer to our Web site about replacement information.

(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. n SAFETY REMINDERS e Please pay sufficient attention to the warnings for safe designing when using these products. e b REMINDERS e 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 v or less). If the storage period elapses, the soldering of the terminal electrodes may deteriorate. a n Do not use or store in locations where there are conditions such as gas corrosion (salt, acid, alkali, etc.). h o 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 r i does not exceed 150°C. o t 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 shoretening may ocucur. 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 b d the overall distortion of the printed circuit board and partial distortion such as at screw tightening portions. o Self heating (temperature increase) occurs when the power is turned ON, so the tolerance should be sufficient for the set thermal l design. l r Carefully lay out the coil for the circuit board design of thei non-magneticp shield type. w A malfunction may occur due to magnetic interference. Use a wrist band to discharge static electricity in your body througdh the grounding wire. Do not expose the products to magnets or magnsetic fields. e t Do not use for a purpose outside of the contents regulatedp in the delivery specifications. c The products listed on this catalog are intended for use in general electronic equipment (AV equipment, telecommunications p equipment, home appliances, amusemeunt equipment, computer equipment, personal equipment, office equipment, measurement equipment, industrial robots) under da normal operaotion 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 stringento level of safety tor reliability, or whose failure, malfunction or trouble could cause serious damage to society, person or property. s If you intend to use the prodructs in the applications listed below or if you have special requirements exceeding the range or conditions set forth in the each cataplog, please contact us. (1) Aerospace/Aviation equipment (8) Public information-processing equipment e (2) Transportation equipment (cars, electric trains, ships, etc.) (9) Military equipment (3) Medical equhipment (10) Electric heating apparatus, burning equipment (4) Power-generation control equipment (11) Disaster prevention/crime prevention equipment T (5) Atomic energy-related equipment (12) Safety equipment (6) Seabed equipment (13) Other applications that are not considered general-purpose (7) Transportation control equipment 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(3/9) I N D U C T O R S Inductors for Power Circuits Product compatible with RoHS directive Halogen-free Wound Ferrite Compatible with lead-free solders Overview of VLF302512MT Type n e e FEATURES b Magnetic shield type wound inductor for power circuits. A DC-DC converter with top-class voltage conversion efficiency for similar products was achievede by optimizing the magnetic material and configuration. v Low-profile product. High magnetic shield construction and compatible with high-density mounting. a Halogen-free compatible product. n h o APPLICATION r i Smart phones, tablet terminals, HDDs, SSDs, DVCs, DSCs, mobile display panels, portable game devices, compact power supply o t modules, other c PART NUMBER CONSTRUCTION e u VLF 302512 M T b- 1dR0 N o L×W×H Dimensions l Inductance Inductance Series name internal code Packaging style (mm max.) l r (µH) tolerance 302512 3.0×2.5×1.2 T Taping 1R0 1.0 M ±20% i p 1R5 1.5 N ±30% w 220 22 d OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT s e Temperature rantge Package quantity Individual weight p Type Operating cStorage temperature temperature （°C） u （°C） p (pieces/reel) （g） VLF302512MT –40 to +105 –40 to +105 2000 0.033 Operating temperature range includes selfd-temperature riseo. The Storage temperature range is for after the circuit board is mounted. o t s r p e h T RoHS Directive Compliant Product: See the following for more details.https://product.tdk.com/info/en/environment/rohs/index.html 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(4/9) I N D U C T O R S VLF302512MT Type RECOMMENDED REFLOW PROFILE n Preheating Soldering Natural cooling e Peak e T4 b e atur T3 T3 er e p m e v T T2 T: t3 a T1 n h t1 t2 o r i o t t: Time c e u Preheating Soldering Peak b d Temp. Time Temp. Time Temp. Time T1 T2 t1 T3 t2 T4 t3 o 150°C 180°C 60 to 120s 230°C 30s 260°C 10s l l r i p w d s e t p c p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(5/9) I N D U C T O R S VLF302512MT Type SHAPE & DIMENSIONS 2.5±0.2 n e e 2 b ±00. )1.0 3. ( e v (0.7) (0.8) (0.7) a n ax. h m 2 o 1. r i Dimensions in mm o t c e u b d RECOMMENDED LAND PATTERN o l 5 l r 4 1. i p w 0.9 0.8 0.9 d Dimensions in mm s e t p c p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(6/9) I N D U C T O R S VLF302512MT Type ELECTRICAL CHARACTERISTICS CHARACTERISTICS SPECIFICATION TABLE n L Measuring DC resistance Rated current Part No. frequency e Isat Isat Itemp e (µH) Tolerance (MHz) ()max. ()typ. (A)max. (A)typ. (A)typ. 1.0 ±30% 1.0 0.037 0.031 1.91 2.12 2.77 VLF302512MT-1R0N b 1.5 ±30% 1.0 0.044 0.037 1.67 1.85 2.54 VLF302512MT-1R5N 2.2 ±20% 1.0 0.066 0.055 1.26 1.40 1.95 VLF302512MT-2R2M 3.3 ±20% 1.0 0.108 0.090 1.08 1.20 1.63 VLF302512MT-3R3M 4.7 ±20% 1.0 0.136 0.113 0.97 1.08 1.42e VLF302512MT-4R7M 6.8 ±20% 1.0 0.194 0.162 0.78 0.84 1.21 VLF302512MT-6R8M v 10 ±20% 1.0 0.299 0.249 0.62 0.69 0.95 VLF302512MT-100M 15 ±20% 1.0 0.448 0.373 0.51 0.57 0.80 VLF302512MT-150M a 22 ±20% 1.0 0.700 0.583 0.43 0.47 0.64 VLF302512MT-220M n Rated current: smaller value of either Isat or Itemp. h Isat: When based on the inductance change rate (30% below the nominal value) o Itemp: When based on the temperature increase (Temperature increase of 40°C by self heating) r i ○Measurement equipment Measurement item Product No. Manufacturer o t L 4294A Keysight Technologies c DC resistance VP-2941A Panasonic Rated current Isat 4285A+42841A+42842C Keysight Technologeies u ＊ Equivalent measurement equipment may be used. b d o l l r i p w d s e t p c p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(7/9) I N D U C T O R S VLF302512MT Type ELECTRICAL CHARACTERISTICS L FREQUENCY CHARACTERISTICS GRAPH n 100 e 220M 150M e 100M b 6R8M 4R7M 10 )H e 3R3M µ (e c v 2R2M n a uct a 1R5N nd n 1R0N I 1 h o r i o t c 0.1 0.1 1 10 100 e u Frequency(MHz) b d ○Measurement equipment Product No. Manufacturer o 4294A Keysight Technologies l ＊ Equivalent measurement equipment may be used. l r i p w d s e t p c p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(8/9) I N D U C T O R S VLF302512MT Type ELECTRICAL CHARACTERISTICS INDUCTANCE VS. DC BIAS CHARACTERISTICS GRAPH n 25 e e 220M 20 b )H15 e μ (e nc v cta 150M u a d10 n n I h 100M o 6R8M 5 4R7M r i 3R3M 2R2M o t 1R5N c 1R0N 0 0 0.5 1 1.5 2 2.5 e u DC current(A) b d ○Measurement equipment Product No. Manufacturer o 4285A+42841A+42842C Keysight Technologies l ＊ Equivalent measurement equipment may be used. l r i p w d s e t p c p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm

(9/9) I N D U C T O R S VLF302512MT Type PACKAGING STYLE REEL DIMENSIONS n 2.0±0.5 E e Type A W1 W2 N E VLF302512MT ø180 9 13 ø60 0.5 e * These values are typical values. b N e v (1.0) a n h ø13.0±0.5 W1 o ø21.0±0.8 W2 r i A o t Dimensions in mm c e u TAPE DIMENSIONS b d øD0 P2 P0 P1 K E o l F W l r B i p w A t Dime nsions in mm d s e t Type A B øD0 E F pP0 P1 P2 W K t c VLF302512MT 2.8 3.3 1.5+0.1/-0 1.75±0.1 3.50±0.1 4.0±0.1 4.00±0.1 2.00±0.05 8.00±0.2 1.35 0.25 p u d o o t s r p e h T 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. 20170612 / inductor_commercial_power_vlf302512mt_en.fm