NPI Unshielded Power Inductors
FEATURES
• NON-SHIELDED MAGNETIC CIRCUIT DESIGN
• SMALL SIZE WITH CURRENT RATINGS TO 16.5 AMPS
• SURFACE MOUNTABLE CONSTRUCTION
• TAKES UP LESS PCB REAL ESTATE AND SAVES MORE POWER
• TAPED AND REELED FOR AUTOMATIC INSERTION
• FOR USE IN VARIOUS POWER SUPPLY APPLICATIONS
RoHS
Compliant
NPI__LS Series
includes all homogeneous materials
*See Part Number System for Details
Case Size
Inductance Range
Operating Temperature Range
Temperatrue Rise at Irms
Inductance Change at Isat
Inductance Tolerance
Resistance to Solder Heat
NPI31LS
1.2 ~ 47μH
NPI32LS
0.75 ~ 82μH
NPI35LS
0.68 ~ 47μH
+40°C
NPI41LS
0.68 ~ 68μH
NPI42LS
1.2 ~ 82μH
-25°C ~ +120°C (Including Self-Heating)
Maximum -30% Indcutance Drop From Initial Measured Value
±20%
+260°C for 10 seconds
Case Size
Inductance Range
Ambient Operating Temperature Range
Temperatrue Rise at Irms
Inductance Change at Isat
Inductance Tolerance
Resistance to Solder Heat
NPI43LS
0.91 ~ 330μH
NPI63LS
1.2 ~ 82μH
+40°C
NPI65LS
1.0 ~ 270μH
NPI84LS
0.75 ~ 82μH
-25°C ~ +120°C (Including Self-Heating)
Maximum -30% Indcutance Drop From Initial Measured Value
±20%
+260°C for 10 seconds
Series
NPI31LS
NPI32LS
NPI35LS
NPI41LS
NPI42LS
NPI43LS
NPI63LS
NPI65LS
NPI84LS
A ± 0.3
3.0
3.0
3.0
4.0
4.0
4.0
6.0
6.0
8.0
B ± 0.3
3.0
3.0
3.0
4.0
4.0
4.0
6.0
6.0
8.0
C max.
1.2
1.4
1.7
1.4
2.2
3.0
2.8
4.5
4.2
D ± 0.3
0.75
0.75
0.75
0.95
0.95
0.95
1.55
1.55
2.0
F ± 0.3
1.5
1.5
1.5
2.1
2.1
2.1
2.9
2.9
4.0
H
2.7
2.7
2.7
3.7
3.7
3.7
5.7
5.7
7.5
I
0.8
0.8
0.8
1.1
1.1
1.1
1.6
1.6
2.2
G
2.3
2.3
2.3
3.0
3.0
3.0
4.6
4.6
6.0
B
C
F
G
PART NUMBER SYSTEM
NPIS 31 LS 470 M TR F
RoHS Compliant
A
H
D
D
I
I
Series
Packaging: TR = Tape & Reel
Inductance Tolerance Code: M=±20%
Inductance Code (μH): 1st two digits are significant,
3rd digit is multiplier.
Construction Code (see drawing for details)
Size Code (see table for details)
®
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
1
NPI Unshielded Power Inductors
Standard Values - Case Size 31 (3.0 x 3.0 x 1.2mm)
Series
NPI31LS1R2MTRF
NPI31LS1R5MTRF
NPI31LS1R8MTRF
NPI31LS2R2MTRF
NPI31LS2R7MTRF
NPI31LS3R3MTRF
NPI31LS3R9MTRF
NPI31LS4R7MTRF
NPI31LS5R6MTRF
NPI31LS6R2MTRF
NPI31LS6R8MTRF
NPI31LS7R5MTRF
NPI31LS9R1MTRF
NPI31LS100MTRF
NPI31LS120MTRF
NPI31LS150MTRF
NPI31LS180MTRF
NPI31LS220MTRF
NPI31LS270MTRF
NPI31LS330MTRF
NPI31LS360MTRF
NPI31LS390MTRF
NPI31LS470MTRF
Inductance
(μH)
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.2
6.8
7.5
9.1
10
12
15
18
22
27
33
36
39
47
Tolerance
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Test Conditions
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
DCR
(Ω)
0.082
0.097
0.108
0.125
0.143
0.169
0.21
0.243
0.306
0.333
0.383
0.389
0.502
0.526
0.599
0.772
1.06
1.11
1.38
1.8
1.95
2.095
2.46
Isat
(Amps)
2.25
2.02
1.75
1.64
1.51
1.37
1.24
1.16
1.04
0.98
0.92
0.88
0.77
0.75
0.7
0.62
0.56
0.52
0.48
0.42
0.42
0.4
0.36
Irms
(Amps)
1.14
1.05
1.0
0.9
0.85
0.8
0.7
0.65
0.6
0.55
0.5
0.5
0.45
0.45
0.4
0.35
0.3
0.3
0.25
0.25
0.2
0.2
0.2
NPI__LS Series
SRF
(MHz)
170
140
110
100
91
85
77
70
63
62
56
53
46
43
41
36
32
30
26
24
24
23
19
Irms specification is based on +20°C temperature rise. Isat is based on -30% inductance change.
®
2
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
NPI Unshielded Power Inductors
Standard Values - Case Size 32 (3.0 x 3.0 x 1.4mm)
Series
NPI32LSR75MTRF
NPI32LS1R0MTRF
NPI32LS2R2MTRF
NPI32LS3R3MTRF
NPI32LS3R9MTRF
NPI32LS4R7MTRF
NPI32LS5R6MTRF
NPI32LS6R2MTRF
NPI32LS 6R8MTRF
NPI32LS7R5MTRF
NPI32LS9R1MTRF
NPI32LS100MTRF
NPI32LS120MTRF
NPI32LS150MTRF
NPI32LS180MTRF
NPI32LS220MTRF
NPI32LS270MTRF
NPI32LS330MTRF
NPI32LS360MTRF
NPI32LS390MTRF
NPI32LS470MTRF
NPI32LS510MTRF
NPI32LS560MTRF
NPI32LS620MTRF
NPI32LS680MTRF
NPI32LS820MTRF
Inductance
(μH)
0.75
1.0
2.2
3.3
3.9
4.7
5.6
6.2
6.8
7.5
9.1
10
12
15
18
22
27
33
36
39
47
51
56
62
68
82
Tolerance
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Test Conditions
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
DCR
(Ω)
0.037
0.045
0.097
0.164
0.177
0.212
0.227
0.246
0.27
0.285
0.357
0.378
0.503
0.663
0.762
0.864
1.005
1.145
1.49
1.585
1.78
1.88
2.21
2.19
2.99
3.505
Isat
(Amps)
3.31
2.93
2.02
1.62
1.49
1.36
1.28
1.22
1.16
1.07
0.98
0.95
0.84
0.75
0.68
0.62
0.57
0.5
0.48
0.47
0.44
0.42
0.38
0.39
0.35
0.31
Irms
(Amps)
1.74
1.59
1.08
0.83
0.8
0.73
0.71
0.68
0.65
0.63
0.56
0.55
0.48
0.41
0.39
0.36
0.34
0.32
0.28
0.27
0.25
0.25
0.23
0.23
0.2
0.18
NPI__LS Series
SRF
(MHz)
180
150
100
81
72
65
60
56
51
46
44
43
37
31
30
27
23
20
21
20
18
17
15
15
14
13
Irms specification is based on +20°C temperature rise. Isat is based on -30% inductance change.
®
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
3
NPI Unshielded Power Inductors
Standard Values - Case Size 35 (3.0 x 3.0 x 1.7mm)
Series
NPI35LSR68MTRF
NPI35LS1R0MTRF
NPI35LS1R2MTRF
NPI35LS1R5MTRF
NPI35LS1R8MTRF
NPI35LS2R2MTRF
NPI35LS2R7MTRF
NPI35LS3R3MTRF
NPI35LS3R6MTRF
NPI35LS3R9MTRF
NPI35LS4R7MTRF
NPI35LS5R6MTRF
NPI35LS6R8MTRF
NPI35LS100MTRF
NPI35LS120MTRF
NPI35LS150MTRF
NPI35LS180MTRF
NPI35LS220MTRF
NPI35LS270MTRF
NPI35LS330MTRF
NPI35LS360MTRF
NPI35LS390MTRF
NPI35LS430MTRF
NPI35LS470MTRF
Inductance
(μH)
0.68
1.0
1.2
1.5
1.8
2.2
2.7
3.3
3.6
3.9
4.7
5.6
6.8
10
12
15
18
22
27
33
36
39
43
47
Tolerance
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Test Conditions
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
DCR
(Ω)
0.028
0.04
0.053
0.06
0.068
0.089
0.106
0.116
0.128
0.146
0.206
0.222
0.253
0.328
0.451
0.52
0.565
0.763
1.006
1.156
1.223
1.298
1.372
1.447
Isat
(Amps)
3.81
3.27
2.84
2.6
2.32
2.07
1.01
1.79
1.66
1.62
1.44
1.37
1.24
1.06
0.9
0.82
0.75
0.7
0.62
0.56
0.53
0.51
0.5
0.48
Irms
(Amps)
2.23
1.85
1.61
1.51
1.41
1.24
1.13
1.09
1.03
0.97
0.82
0.79
0.73
0.65
0.55
0.5
0.5
0.42
0.37
0.34
0.33
0.32
0.32
0.31
NPI__LS Series
SRF
(MHz)
170
150
133
113
96
91
80
75
66
65
57
54
50
26
32
30
28
25
21
18
18
17
17
16
Irms specification is based on +20°C temperature rise. Isat is based on -30% inductance change.
®
4
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
NPI Unshielded Power Inductors
Standard Values - Case Size 41 (4.0 x 4.0 x 1.4mm)
Series
NPI41LSR68MTRF
NPI41LS1R0MTRF
NPI41LS1R5MTRF
NPI41LS1R8MTRF
NPI41LS2R7MTRF
NPI41LS3R3MTRF
NPI41LS3R6MTRF
NPI41LS4R7MTRF
NPI41LS5R1MTRF
NPI41LS6R8MTRF
NPI41LS7R5MTRF
NPI41LS8R2MTRF
NPI41LS9R1MTRF
NPI41LS100MTRF
NPI41LS120MTRF
NPI41LS150MTRF
NPI41LS180MTRF
NPI41LS220MTRF
NPI41LS270MTRF
NPI41LS330MTRF
NPI41LS360MTRF
NPI41LS390MTRF
NPI41LS430MTRF
NPI41LS470MTRF
NPI41LS510MTRF
NPI41LS620MTRF
NPI41LS680MTRF
Inductance
(μH)
0.68
1.0
1.5
1.8
2.7
3.3
3.6
4.7
5.1
6.8
7.5
8.2
9.1
10
12
15
18
22
27
33
36
39
43
47
51
62
68
Tolerance
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
±20%
Test Conditions
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
100KHz, 1V
DCR
(Ω)
0.053
0.067
0.081
0.097
0.113
0.129
0.147
0.164
0.182
0.269
0.289
0.313
0.339
0.367
0.394
0.502
0.587
0.791
0.905
1.196
1.246
1.341
1.451
1.558
1.664
2.223
2.37
Isat
(Amps)
4.56
3.74
3.16
2.85
2.56
2.32
2.18
1.98
1.82
1.6
1.49
1.4
1.36
1.31
1.23
1.09
1.0
0.89
0.82
0.71
0.68
0.65
0.63
0.61
0.58
0.51
0.49
Irms
(Amps)
1.63
1.45
1.32
1.2
1.12
1.04
0.98
0.92
0.88
0.72
0.7
0.67
0.64
0.62
0.6
0.53
0.49
0.42
0.39
0.34
0.34
0.32
0.31
0.3
0.29
0.25
0.24
NPI__LS Series
SRF
(MHz)
140
140
110
100
86
79
68
63
57
49
46
42
41
39
35
31
28
26
22
20
19
17
18
16
15
14
13
Irms specification is based on +20°C temperature rise. Isat is based on -30% inductance change.
®
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
5
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