NPI Power Inductors
FEATURES
• MINIATURE SIZE (6.5mm X 5.2mm)
• LOW PROFILE (1.05mm ~ 2.55mm MAXIMUM HEIGHT)
• SURFACE MOUNTABLE CONSTRUCTION
• TAPED AND REELED FOR AUTOMATIC INSERTION
CHARACTERISTICS
Case Size
Inductance Range
Inductance Tolerance
Operating Temperature Range
Inductance Change at Isat
Temperature Rise at Isat
Resistance to Solder Heat
NPI21S
NPI22S
NPI23S
100µH ~ 1,000µH
±20% (M)
-25°C ~ +85°C
-10% max.
+40°C max.
260°C for 10 seconds (Inductance change ±10% max.)
2.2µH ~ 47µH
NPI__S Series
includes all homogeneous materials
*See Part Number System for Details
NPI24S
100µH ~ 3,300µH
RoHS
Compliant
CASE DIMENSIONS (mm)
Series
NPI21S
NPI22S
NPI23S
NPI24S
L
L
1
1
4
2
A
B
C
D
L
L
1
W
W
1
T
1.05 max.
1.25 max.
1.55 max.
2.55 max.
4.8±0.1 3.0 ±0.1 0.5 ±0.1 0.4 ±0.1 5.2 ±0.1 5.0 ±0.1 6.5 max. 5.0 ±0.1
A
C
3
4
PART NUMBER SYSTEM
NPI 21 S 220 M TR F
RoHS Compliant
100
2
3
W
1
W B
1
D
Circuit Schematic
T
Packaging: TR = Tape & Reel
Inductance Tolerance Code: M=±20%
Inductance Code (µH): 1st two digits are significant,
3rd digit is multiplier for values from 10µH and up.
Construction Code (see drawing for details)
Size Code (see table for details)
Series
LAND PATTERN DIMENSIONS (mm)
Series
NPI_S
L
5.4
G
4.2
G
1
2.2
H
3.8
300
250
Temperature °C
200
150
100
50
Pre-Heat
150°C ~ 180°C
60 ~ 120 sec.
Time above 230°C
30 seconds max.
Cool Down
REFLOW SOLDERING PROFILE
Soldering 260°C max.
5 seconds max.
L
H
G
25
30
60
90 120 150 180 210 240 270 300
Time - Seconds
®
48
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
NPI Power Inductors
Part Number
NPI21S2R2MTRF
NPI21S3R3MTRF
NPI21S4R7MTRF
NPI21S6R8MTRF
NPI21S100MTRF
NPI21S150MTRF
NPI21S220MTRF
NPI21S330MTRF
NPI21S470MTRF
NPI__S Series
STANDARD VALUES - 21 CASE SIZE (6.5 x 5.2 x 1.05mm)
Inductance Value
DC Resistance
DC Current
DC Current
Test Frequency
(µH)
(Ω)
(Irms)
(Isat)
2.2±20%
0.18
0.51
1.70
3.3±20%
4.7±20%
6.8±20%
10±20%
15±20%
22±20%
33±20%
47±20%
0.22
0.28
0.38
0.61
0.82
1.10
1.88
2.34
0.46
0.41
0.35
0.27
0.24
0.20
0.15
0.14
1.50
1.32
1.12
0.90
0.73
0.62
0.52
0.42
100KHz
Part Number
NPI22S2R2MTRF
NPI22S3R3MTRF
NPI22S4R7MTRF
NPI22S6R8MTRF
NPI22S100MTRF
NPI22S150MTRF
NPI22S220MTRF
NPI22S330MTRF
NPI22S470MTRF
STANDARD VALUES - 22 CASE SIZE (6.5 x 5.2 x 1.25mm)
Inductance Value
DC Resistance
DC Current
DC Current
Test Frequency
(µH)
(Ω)
(Irms)
(Isat)
2.2±20%
3.3±20%
4.7±20%
6.8±20%
10±20%
15±20%
22±20%
33±20%
47±20%
0.18
0.22
0.27
0.37
0.48
0.62
1.00
1.40
2.16
0.55
0.50
0.45
0.38
0.33
0.29
0.23
0.19
0.15
1.97
1.82
1.54
1.30
1.10
0.95
0.77
0.6
0.51
100KHz
Part Number
NPI23S101MTRF
NPI23S151MTRF
NPI23S221MTRF
NPI23S331MTRF
NPI23S471MTRF
NPI23S631MTRF
NPI23S102MTRF
STANDARD VALUES - 23 CASE SIZE (6.5 x 5.2 x 1.55mm)
Inductance Value
DC Resistance
DC Current
DC Current
Test Frequency
(µH)
(Ω)
(Irms)
(Isat)
100±20%
150±20%
220±20%
330±20%
470±20%
630±20%
1000±20%
3.2
5.0
6.5
12
22
27
33
0.160
0.130
0.115
0.085
0.060
0.055
0.050
0.50
0.35
0.30
0.22
0.17
0.15
0.13
100KHz
Part Number
NPI24S101MTRF
NPI24S151MTRF
NPI24S221MTRF
NPI24S331MTRF
NPI24S471MTRF
NPI24S681MTRF
NPI24S102MTRF
NPI24S152MTRF
NPI24S222MTRF
NPI24S332MTRF
®
STANDARD VALUES - 24 CASE SIZE (6.5 x 5.2 x 2.55mm)
Inductance Value
DC Resistance
DC Current
DC Current
Test Frequency
(µH)
(Ω)
(Irms)
(Isat)
100±20%
150±20%
220±20%
330±20%
470±20%
680±20%
1000±20%
1500±20%
2200±20%
3300±20%
1.6
2.5
3.8
5.9
7.5
12
20
25
45
60
0.240
0.190
0.160
0.130
0.110
0.090
0.070
0.060
0.045
0.040
0.45
0.35
0.30
0.25
0.22
0.18
0.14
0.12
0.09
0.08
100KHz
Maximum +40°C temperature rise at Irms. Maximum -10% inductance change at Isat.
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
49
NPI Power Inductors
Case Size
NPI21S
NPI22S
NPI23S
NPI24S
5.45 ±0.1 6.75 ±0.1
TAPING DIMENSIONS (mm)
Ao
Bo
Ko
1.40 ±0.1
1.75 ±0.1
2.80 ±0.1
7.50 ±0.1
16.0
8.0
Co
W
Po
Qty/Reel
NPI__S Series
3,000
2,000
1.75mm ±0.1
4.0mm
±0.1
Po
1.5mm ± 0.1
0.35mm ± 0.05
Co
Bo
W
Ao
Ko
Tape Width
16mm
REEL DIMENSIONS (mm)
A(mm)
18.0 +0
B(mm)
50 -0
C(mm)
13 ±0.5
D(mm)
330
D
C
B
A
®
50
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
Isat and Irms
NPI & NPIS Series
Isat
(Saturation
Current)
- is the current required to
decrease the inductance
value by the specified
maximum amount (given as a percentage of the nominal inductance value).
Irms
- is the current required to
increase the temperature
of the part a maximum specificed amount
(given as a temperature rise in °C).
In some instances Isat and Irms are shown separately with a maximum decrease in inductance speci-
fied at one current rating (Isat) and a maximum temperature rise specificed at another current rating
(Irms). In other cases one current value is given for both (specified as Idc) and represents the current at
which a specified maximum inductance decrease and a maximum specified temperature rise can occur.
The graph below illustrates change in inductance and temperature as current increases.
Based on the above graph Isat and Irms could be expressed as follows:
1. Isat and Irms can be shown as separate current values. The Isat current is a value of current that
could potentially produce a specified maximum inductance change (-5%, -10%, -20%, etc. of the nominal
value). In this case a 1.0A current has produced a -5% inductance change so 1.0A could be specified as
the inductor's Isat current rating. The Irms could be expressed as the current that produces a +40°C
temperature rise which in this case is about 1.18A.
2. Both Isat and Irms can be expressed using one current value (Idc). In the above graph 1.18A could be
specified as the Idc for the part noting that at 1.18A a potential +40°C temperature rise (equivalent to
Irms) and a -10% change in inductance (equivalent to Isat) could occur.
®
116
NIC COMPONENTS CORP.
www.niccomp.com
www.lowESR.com
www.RFpassives.com
www.SMTmagnetics.com
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