Document 380-1
SMT Power Inductor – ME3220
• Miniature power inductor: 2.5 × 3.2 base × 2.0 mm tall
• Specified by NSC for their LM2830 Buck Converter
Designer’s Kit C386
contains samples of all values
Core material
Ferrite
Core and winding loss
See www.coilcraft.com/coreloss
Terminations
RoHS tin-silver over tin over nickel over silver. Other
terminations available at additional cost.
Weight
56 – 65 mg
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.
Tape and reel 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
2000/7″reel; 7000/13″ reel Plastic tape: 12 mm wide,
0.25 mm thick, 4 mm pocket spacing, 2.25 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf
Part number
1
ME3220-102ML_
ME3220-152ML_
ME3220-222ML_
ME3220-332ML_
ME3220-472ML_
ME3220-562ML_
ME3220-682ML_
ME3220-822ML_
ME3220-103KL_
ME3220-123KL_
ME3220-153KL_
ME3220-183KL_
ME3220-223KL_
ME3220-273KL_
ME3220-333KL_
ME3220-393KL_
ME3220-473KL_
ME3220-563KL_
ME3220-683KL_
ME3220-823KL_
ME3220-104KL_
DCR
Inductance
2
max
3
(µH)
(Ohms)
1.0 ±20% 0.058
1.5 ±20% 0.068
2.2 ±20% 0.104
3.3 ±20% 0.138
4.7 ±20% 0.190
5.6 ±20% 0.200
6.8 ±20% 0.270
8.2 ±20% 0.290
10 ±10%
0.434
12 ±10%
0.470
15 ±10%
0.520
18 ±10%
0.696
22 ±10%
0.787
27 ±10%
1.19
33 ±10%
1.27
39 ±10%
1.38
47 ±10%
1.80
56 ±10%
2.10
68 ±10%
2.30
82 ±10%
3.00
100 ±10%
3.50
Isat
(A)
5
SRF
typ
4
10% 20% 30%
(MHz) drop drop drop
170.7 2.7 3.0
3.2
138.0 2.2 2.5
2.7
92.6 1.8 2.1
2.2
75.6 1.5 1.6
1.7
58.2 1.2 1.4
1.5
52.5 1.1 1.3
1.4
46.2 1.0 1.1
1.2
45.2 0.98 1.0
1.1
39.9 0.78 1.0
1.1
37.5 0.76 0.88 0.98
32.5 0.70 0.80 0.90
31.7 0.66 0.75 0.80
29.4 0.59 0.67 0.71
26.1 0.56 0.63 0.67
23.0 0.50 0.57 0.60
22.6 0.45 0.51 0.54
20.7 0.40 0.46 0.49
20.3 0.37 0.42 0.45
16.3 0.34 0.38 0.41
13.7 0.30 0.34 0.36
13.3 0.28 0.32 0.34
Irms
(A)
6
20°C 40°C
rise rise
2.0
2.6
1.6
2.2
1.5
2.0
1.4
1.6
1.0
1.3
1.0
1.3
0.88 1.1
0.80 1.0
0.63 0.87
0.61 0.84
0.58 0.83
0.49 0.70
0.47 0.64
0.40 0.54
0.39 0.53
0.34 0.47
0.30 0.45
0.27 0.43
0.26 0.38
0.25 0.34
0.24 0.32
1. Please specify
termination
and
packaging
codes:
ME3220-104KLC
Termination: L
= RoHS tin-silver over tin over nickel
over silver.
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 (2000 parts
per full reel).
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 (7000 parts
per full reel).
2. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using
Coilcraft SMD-A fixture in Agilent/HP 4284A impedance
analyzer.
3. DCR measured on a micro-ohmmeter and Coilcraft
CCF858 test fixture.
4. SRF measured using Agilent/HP 8753D network
analyzer and Coilcraft SMD-D test fixture.
5. DC current at which the inductance drops the specified
amount from its value without current.
6. Current that causes the specified temperature rise from
25°C ambient.
7. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components”
before soldering.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 380-1
Revised 02/17/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 380-2
SMT Power Inductor – ME3220 Series
Typical L vs Frequency
1000
100 µH
33 µH
Typical L vs Current
1000
100
100
100 µH
33 µH
10 µH
3.3 µH
1 µH
Inductance (µH)
10
10 µH
3.3 µH
Inductance (µH)
1
10
10
1
1 µH
1
0.1
0.01
0.1
0.1
Frequency (MHz)
0.01
0.1
1
10
Current (A)
Typical Temperature Rise vs Current
50
Temperature rise (from 25°C)
0.126 ±0.012
3,2 ±0,3
100 µH
33 µH
40
10 µH
3.3
µH
30
1.
0
0.110
max
2,8
µH
20
0.098 ±0.008
2,5 ±0.2
10
0
0.079 ±0.016
2,0 ±0,4
0
0.5
1.0
1.5
2.0
2.5
3.0
0.043
1,10
Recommended
Land Pattern
0.060
1,52
Current (A rms)
Current Derating
120
110
0.098
2,5
0.120
3,05
Percent of rated current
100
90
80
70
60
50
40
20
10
0
Dimensions are in
inches
mm
0.090
2,29
Isat
Irms
-40
-20
0
20
25°C
40
30
60
80
100
120 140
Ambient temperature (°C)
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 380-2
Revised 02/17/12
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Embedded System
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