Web Sample Tools & Support Document 420-1 page & buy software & FAQ VRM/ VRD Power Inductors MVR AEC The MVR series provides greater current handling + Q200 125C capability than any other power inductor its size. While MVR1251T only requiring only one square centimeter of board space, this inductor can handle up to 36 Amps of current. These shielded inductors were developed for multi-phase voltage regulators and are ideal for use in DC-DC con- verters, battery-powered devices and high current power supplies. Their flat wire construction ensures very low DC resistance and offers an excellent performance-to- height ratio. The materials used in these parts eliminate all thermal aging issues. The MVR12xxT is a high efficiency part that features very low core loss. The MVR12xxC provides soft saturation and is unaffected by part temperature up to 125C. Refer to the comparison curves for L vs Current and ESR vs Frequency for performance differences. For free evaluation samples, contact Coilcraft or order them online at www.coilcraft.com. 2 3 L DCR SRF Height Core material MVRxxxT: Ferrite MVRxxxxC: Powdered iron 4 5 20% 8% typ Isat Irms max Core and winding loss See www.coilcraft.com/coreloss 1 Part number (H) (mOhm) (MHz) (A) (A) (mm) Terminations RoHS compliant tin-silver over copper. Other termina- Low core loss tions available at additional cost. MVR1251T-251ML 0.25 0.925 160 35 25 5.1 Weight MVRT: 2.1 g MVRC: 2.45 3.86 g MVR1251T-361ML 0.36 0.925 140 24 24 5.1 Ambient temperature 40C to +85C with Irms current, +85C to MVR1251T-561ML 0.56 0.925 110 13 25 5.1 +125C with derated current Soft saturation MVR1247C-361ML 0.36 0.925 120 36 24 4.7 Storage temperature Component: 40C to +125C. Tape and reel packaging: 40C to +80C MVR1255C-651ML 0.65 1.50 115 24 19 5.5 MVR1261C-112ML 1.10 1.95 95 20 20 6.1 Resistance to soldering heat Max three 40 second reflows at MVR1271C-162ML 1.65 2.53 55 17 20 7.1 +260C, parts cooled to room temperature between cycles MVR1278C-232ML 2.30 3.08 50 16 17 7.8 Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) 1. When ordering, please specify termination and packaging codes: Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 MVR1278C-232MLC Termination: L = RoHS compliant tin-silver over copper. Packaging Special order: T = RoHS tin-silver-copper MVR1247 200/7 reel 900/13 reel (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). MVR1251 175/7 reel 700/13 reel Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic MVR1255 175/7 reel 700/13 reel tape. Quantities less than full reel available: in tape MVR1261 175/7 reel 700/13 reel (not machine ready) or with leader and trailer ( 25 MVR1271 100/7 reel 500/13 reel charge). MVR1278 100/7 reel 500/13 reel B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need Plastic tape: 24 mm wide, 16 mm pocket spacing for multiple packaging codes. When ordering, simply MVR1247 0.35 mm thick, 4.5 mm pocket depth change the last letter of your part number from B to C. MVR1251 0.4 mm thick, 6.1 mm pocket depth D = 13 machine-ready reel. EIA-481 embossed plastic MVR1255 0.4 mm thick, 6.1 mm pocket depth tape. Factory order only, not stocked. MVR1261 0.4 mm thick, 6.1 mm pocket depth 2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc using a Coilcraft MVR1271 0.4 mm thick, 7.5 mm pocket depth SMD-A fixture in an Agilent/HP 4284A LCR meter or equivalent. MVR1278 0.4 mm thick, 7.5 mm pocket depth 3. SRF measured on an Agilent/HP 8753ES. PCB washing Tested to MIL-STD-202 Method 215 plus an additional 4. DC current at which the inductance drops 30% (typ) for MVR12xxC aqueous wash. See Doc787 PCB Washing.pdf. and 20% (typ) for MVR12xxT from its value without current. 5. Current that causes a 40C temperature rise from 25C ambient. 6. Electrical specifications at 25C. Refer to Doc 362 Soldering Surface Mount Components before soldering. Document 420-1 Revised 11/09/20 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2020 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information.Document 420-2 MVR Series VRM/ VRD Power Inductors Current Derating Temperature Rise vs Current 120 80 MVR12xxC 110 0.65 H MVRC 70 MVR12xxT 1.10 H 100 AEC 0.36 H + 1.65 H Q200 125C 90 60 2.3 H 0.25 H 80 0.36 H 50 0.56 H 70 MVRT 60 40 50 30 40 30 20 20 Isat 10 10 Irms 0 0 -40 -200 20 40 60 80 100 120 140 015 10 520253035 Ambient temperature (C) Current (Arms) L vs Current Comparison 0.36 H 0.5 0.4 MVR1251T-361 MVR1247C-361 0.3 0.2 0.1 0.1 1 10 100 Current (A) ESR vs Frequency Comparison 0.36 H 10 9 8 inches Dimensions are in mm 7 6 MVR1247C-361 MVR1251T-361 Height (in. / mm) Length (in. / mm) 5 Body size typ max typ max MVR1247 0.171 / 4,35 0.185 / 4,70 0.448 / 11,37 0.453 / 11,50 4 MVR1251 0.181 / 4,61 0.200 / 5,10 0.439 / 11,14 0.453 / 11,50 MVR1255 0.207 / 5,25 0.217 / 5,50 0.448 / 11,37 0.453 / 11,50 3 MVR1261 0.232 / 5,90 0.240 / 6,10 0.448 / 11,37 0.453 / 11,50 MVR1271 0.262 / 6,65 0.280 / 7,10 0.448 / 11,37 0.453 / 11,50 2 MVR1278 0.287 / 7,29 0.307 / 7,80 0.448 / 11,37 0.453 / 11,50 1 0 0.1 1 10 100 Frequency (MHz) Document 420-2 Revised 11/09/20 US +1-847-639-6400 sales coilcraft.com UK +44-1236-730595 sales coilcraft-europe.com Coilcraft Inc. 2020 This product may not be used in medical or high Taiwan +886-2-2264 3646 sales coilcraft.com.tw risk applications without prior Coilcraft approval. China +86-21-6218 8074 sales coilcraft.com.cn Specification subject to change without notice. Singapore + 65-6484 8412 sales coilcraft.com.sg Please check web site for latest information. Inductance (H) Equivalent Series Resistance (Ohms) Percent of rated current 25C Temperature rise (from 25C)