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| Document 420-1 VRM/ VRD Power Inductors - MVR The MVR series provides greater current handling capability than any other power inductor its size. While requiring only one square centimeter of board space, this inductor can handle up to 36 Amps of current. These shielded inductors were developed for multiphase voltage regulators and are ideal for use in DCDC converters, 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. L2 DCR SRF3 Height 20% 8% typ Isat4 Irms5 max (H) (mOhm) (MHz) (A) (A) (mm) 0.25 0.36 0.56 0.36 0.65 1.10 1.65 2.30 0.925 0.925 0.925 0.925 1.50 1.95 2.53 3.08 160 140 110 120 115 95 55 50 35 24 13 36 24 20 17 16 25 24 25 24 19 20 20 17 5.1 5.1 5.1 4.7 5.5 6.1 7.1 7.8 Core material MVRxxxT: Ferrite; MVRxxxxC: Powdered iron Core and winding loss See www.coilcraft.com/coreloss Terminations RoHS compliant tin-silver over copper. Other terminations available at additional cost. Weight MVRT: 2.1 g; MVRC: 2.45 - 3.86 g Ambient temperature -40C to +85C with Irms current, +85C to +125C with derated current Storage temperature Component: -40C to +125C. Packaging: -40C to +80C Resistance to soldering heat Max three 40 second reflows at +260C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging MVR1247 MVR1251 MVR1255 MVR1261 MVR1271 MVR1278 200/7 reel; 900/13 reel 175/7 reel; 700/13 reel 175/7 reel; 700/13 reel 175/7 reel; 700/13 reel 100/7 reel; 500/13 reel 100/7 reel; 500/13 reel Part number1 Low core loss MVR1251T-251ML_ MVR1251T-361ML_ MVR1251T-561ML_ Soft saturation MVR1247C-361ML_ MVR1255C-651ML_ MVR1261C-112ML_ MVR1271C-162ML_ MVR1278C-232ML_ 1. When ordering, please specify termination and packaging codes: MVR1278C-232MLC Termination: L = RoHS compliant tin-silver over copper. Special order: T = RoHS tin-silver-copper (95.5/4/0.5) or S = non-RoHS tin-lead (63/37). Packaging: C = 7 machine-ready reel. EIA-481 embossed plastic tape. B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. D = 13 machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked. 2. Inductance measured at 500 kHz, 0.1 Vrms, 0 Adc using a Coilcraft SMD-A fixture in an Agilent/HP 4284A LCR meter or equivalent. 3. SRF measured on an Agilent/HP 8753ES. 4. DC current at which the inductance drops 30% (typ) for MVR12xxC 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. Plastic tape: 24 mm wide, 16 mm pocket spacing MVR1247 0.35 mm thick, 4.5 mm pocket depth MVR1251 0.4 mm thick, 6.1 mm pocket depth MVR1255 0.4 mm thick, 6.1 mm pocket depth MVR1261 0.4 mm thick, 6.1 mm pocket depth MVR1271 0.4 mm thick, 7.5 mm pocket depth MVR1278 0.4 mm thick, 7.5 mm pocket depth PCB washing Only pure water or alcohol recommended Specifications subject to change without notice. Please check our website for latest information. Document 420-1 Revised 10/20/08 (c) Coilcraft, Inc. 2009 Document 420-2 MVR Series - VRM/VRD Power Inductor Current Derating 120 110 MVRC Temperature Rise vs Current 80 Temperature rise (from 25C) Percent of rated current 100 90 80 70 60 50 40 20 10 0 -40 30 Isat Irms -20 0 20 MVRT 70 60 50 40 30 20 10 0 MVR12xxC MVR12xxT 2.3 H 0.65 H 1.10 H 1.65 H 0.36 H 0.25 H 0.36 H 0.56 H 25C 40 60 80 100 120 140 0 5 10 15 20 25 30 35 Ambient temperature (C) Current (A rms) L vs Current Comparison - 0.36 H T-XXX XXXX 0.5 Length (see table) C - XXX 0.351 8,91 Inductance (H) 0.4 MVR1251T-361 MVR1247C-361 0.369 typ 9,38 0.384 max 9,75 Height (see table) Finish Start 0.069 0.002 1,75 0,05 MVRC or MVRT Internal code 0.3 Part Marking 0.2 Recommended Land Pattern 0.1 0.1 1 10 100 0.223 0.012 5,67 0,30 Current (A) ESR vs Frequency Comparison - 0.36 H Equivalent Series Resistance (Ohms) 10 9 8 7 6 MVR1247C-361 MVR1251T-361 0.336 0.010 8,53 0,25 0.375 9,53 Dimensions are in inches mm 0.100 2,54 5 4 3 2 1 0 0.1 1 10 100 Body size MVR1247 MVR1251 MVR1255 MVR1261 MVR1271 MVR1278 Height (in. / mm) typ max 0.171 / 4,35 0.185 / 4,70 0.181 / 4,61 0.200 / 5,10 0.207 / 5,25 0.217 / 5,50 0.232 / 5,90 0.240 / 6,10 0.262 / 6,65 0.280 / 7,10 0.287 / 7,29 0.307 / 7,80 Length(in. / mm) typ max 0.448 / 11,37 0.453 / 11,50 0.439 / 11,14 0.453 / 11,50 0.448 / 11,37 0.453 / 11,50 0.448 / 11,37 0.453 / 11,50 0.448 / 11,37 0.453 / 11,50 0.448 / 11,37 0.453 / 11,50 Frequency (MHz) Specifications subject to change without notice. Please check our website for latest information. Document 420-2 Revised 10/20/08 (c) Coilcraft, Inc. 2009 XXXX Dash number Document 420-3 MVR Series - VRM/VRD Power Inductor MVR12xxT L vs Frequency 3.0 2.5 MVR12xxC L vs Frequency 3.0 2.5 Inductance (H) Inductance (H) 2.0 1.5 1.0 0.5 0 0.1 1 10 0.56 H 0.36 H 0.25 H 2.0 1.5 1.0 0.5 0 2.30 H 1.65 H 1.10 H 0.65 H 0.36 H 100 0.1 1 10 100 Frequency (MHz) Frequency (MHz) L vs Current 3.0 2.5 L vs Current 3.0 2.5 Inductance (H) 2.0 1.5 1.0 0.5 0 0.1 1 10 0.56 H 0.36 H 0.25 H Inductance (H) 2.0 1.5 2.30 H 1.65 H 1.0 1.10 H 0.5 0 0.1 1 10 0.65 H 0.36 H 100 100 Current (A) Current (A) Inductance vs current is unaffected by part temperature up to 125C. ESR vs Frequency Equivalent Series Resistance (Ohms) 10 9 8 7 6 5 4 3 2 1 0 0.1 1 10 100 0.25 H 0.36 H 0.56 H ESR vs Frequency Equivalent Series Resistance (Ohms) 10 9 8 7 6 5 4 3 2 1 0 0.1 1 10 100 2.30 H 1.65 H 0.36 H 1.10 H 0.65 H Frequency (MHz) Specifications subject to change without notice. Please check our website for latest information. Frequency (MHz) Document 420-3 Revised 10/20/08 (c) Coilcraft, Inc. 2009 |
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