Coilcraft MVR1251T-361ML Vrm/ vrd power inductor Datasheet

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 125°C.
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.
Part number1
Low core loss
MVR1251T-251ML_
MVR1251T-361ML_
MVR1251T-561ML_
Soft saturation
MVR1247C-361ML_
MVR1255C-651ML_
MVR1261C-112ML_
MVR1271C-162ML_
MVR1278C-232ML_
L2
DCR
SRF3
Height
±20% ±8%
typ Isat4 Irms5 max
(µH) (mOhm) (MHz) (A) (A) (mm)
0.25
0.36
0.56
0.925
0.925
0.925
160
140
110
35
24
13
25
24
25
5.1
5.1
5.1
0.36
0.65
1.10
1.65
2.30
0.925
1.50
1.95
2.53
3.08
120
115
95
55
50
36
24
20
17
16
24
19
20
20
17
4.7
5.5
6.1
7.1
7.8
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 40°C temperature rise from 25°C ambient.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
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 –40°C to +85°C with Irms current, +85°C to
+125°C with derated current
Storage temperature Component: –40°C to +125°C.
Packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /
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
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.
© Coilcraft, Inc. 2009
Document 420-1
Revised 10/20/08
Document 420-2
MVR Series – VRM/VRD Power Inductor
Current Derating
Temperature Rise vs Current
100
90
80
70
MVRT
60
50
40
30
Isat
Irms
-40
-20
0.65 µH
1.10 µH
1.65 µH 0.36 µH
60
2.3 µH
40
30
20
10
0
0
20
40
60
80
100
120 140
0
5
10
15
Ambient temperature (°C)
20
Dash
number
XXXX
T-XXX
0.5
Inductance (µH)
25
30
35
Current (A rms)
L vs Current Comparison – 0.36 μH
0.4
0.25 µH
0.36 µH
0.56 µH
50
Length
(see table)
MVRC
or
MVRT
MVR1251T-361
0.369 typ
9,38
0.384 max
9,75
MVR1247C-361
0.3
XXXX
10
0
MVR12xxC
MVR12xxT
70
C - XXX
20
Temperature rise (from 25°C)
80
MVRC
25°C
Percent of rated current
120
110
Internal
code
Part Marking
Height
(see table)
0.2
0.1
0.1
10
1
100
Recommended
Land Pattern
Start
Finish
0.223 ±0.012
5,67 ±0,30
0.351
8,91
0.069 ±0.002
1,75 ±0,05
Current (A)
0.336 ±0.010
8,53 ±0,25
Equivalent Series Resistance (Ohms)
ESR vs Frequency Comparison – 0.36 μH
0.375
9,53
10
9
8
Dimensions are in
0.100
2,54
inches
mm
7
6
MVR1247C-361
MVR1251T-361
Body size
MVR1247
MVR1251
MVR1255
MVR1261
MVR1271
MVR1278
5
4
3
2
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
1
0
0.1
1
10
100
Frequency (MHz)
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
Document 420-2
Revised 10/20/08
Document 420-3
MVR Series – VRM/VRD Power Inductor
MVR12xxC
L vs Frequency
L vs Frequency
3.0
3.0
2.5
2.5
Inductance (µH)
Inductance (µH)
MVR12xxT
2.0
1.5
1.0
0.56 µH
0.5
0.1
10
1
2.30 µH
1.5
1.65 µH
1.0
1.10 µH
0.65 µH
0.36 µH
0.5
0.36 µH
0.25 µH
0
2.0
0
0.1
100
100
L vs Current
3.0
3.0
2.5
2.5
Inductance (µH)
Inductance (µH)
L vs Current
2.0
1.5
1.0
0.56 µH
0.36 µH
0.25 µH
0.5
0
0.1
10
1
Frequency (MHz)
Frequency (MHz)
10
1
2.0
2.30 µH
1.5
1.65 µH
1.0
1.10 µH
0.5
0.65 µH
0.36 µH
0
100
0.1
10
1
Current (A)
100
Current (A)
Inductance vs current is unaffected by part temperature up to 125°C.
ESR vs Frequency
10
9
0.56 µH
8
0.36 µH
7
6
5
0.25 µH
4
3
2
1
0
0.1
1
10
100
Equivalent Series Resistance (Ohms)
Equivalent Series Resistance (Ohms)
ESR vs Frequency
10
9
2.30 µH
8
1.65 µH
7
0.36 µH
1.10 µH
6
0.65 µH
5
4
3
2
1
0
0.1
Frequency (MHz)
10
100
Frequency (MHz)
Specifications subject to change without notice.
Please check our website for latest information.
© Coilcraft, Inc. 2009
1
Document 420-3
Revised 10/20/08
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