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®
Specications are subject to change
NPI Power Inductors NPI__W Series
FEATURES
• HIGH CURRENT, SMALL SIZE (UP TO 8.6 AMPS)
• SURFACE MOUNTABLE CONSTRUCTION
• HIGH INDUCTANCE (UP TO 1000µH)
• TAPED AND REELED FOR AUTOMATIC INSERTION
• FOR USE IN DC/DC CONVERTERS
CHARACTERISTICS
Case Size NPI16W NPI31W NPI34W NPI52W
Inductance Range 1 ~ 1000µH 1.0 ~ 3300µH 10 ~ 1000µH 1 ~ 1000µH
Ambient Operating Temperature Range -40°C ~ +85°C*
Maximum Component Temperature
(Ambient + Self-Heating) +125°C*
Temperature Rise at Irms 40°C max.
Inductance Change at Isat -10% typical
Inductance Tolerance 20% (M)
Resistance to Solder Heat 260°C for 10 seconds
Series A B C D E F G (Ref) H (Ref) I (Ref)
NPI16W 4.45 Max 6.60 Max 2.92 Max 1.02 ± 0.2 1.27 ± 0.2 4.32 ± 0.3 4.06 3.56 1.4
NPI31W 9.30 ± 0.2 12.80 ± 0.2 5.00 ± 0.3 2.40 ± 0.2 2.50 ± 0.2 7.60 ± 0.3 7.3 2.8 3
NPI34W 9.30 ± 0.2 12.80 ± 0.2 11.0 ± 0.5 2.40 ± 0.2 2.50 ± 0.2 7.60 ± 0.3 7.3 2.8 3
NPI52W 15.0 ± 0.3 18.40 ± 0.3 7.00 ± 0.5 2.40 ± 0.2 2.20 ± 0.2 13.30 ± 0.3 12.7 2.8 3
DIMENSIONS (mm)
GI
H
LAND PATTERN
CONSTRUCTION
A
C
D
E
NPI16W NPI30W, 31W, 34W
AND 52W
B
F
C
E
B
D
F
A
*See Part Number System for Details
RoHS
Compliant
includes all homogeneous materials
*Specications reect recent product changes. For more information refer to PCN announcement [Link]
NPI 31 W4R7 MTR F
RoHS Compliant
Packaging: TR = Tape & Reel
Inductance Tolerance Code: M=±20%
Inductance Code (µH): 1st two digits are signicant,
3rd digit is multiplier for values from 10µH and up.
Construction Code (see drawing for details)
Size Code (see table for details)
Series
PART NUMBER SYSTEM
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®
Specications are subject to change
NPI Power Inductors NPI__W Series
Part Number
STANDARD VALUES - CASE SIZE 16 (4.45 x 6.6 x 2.92mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI16W1R0MTRF 1.0 ± 20% 130 0.05 2.9 2.9
100KHz
NPI16W1R5MTRF 1.5 ± 20% 115 0.05 2.8 2.6
NPI16W2R2MTRF 2.2 ± 20% 90 0.07 2.4 2.3
NPI16W3R3MTRF 3.3 ± 20% 70 0.08 2.0 2.0
NPI16W4R7MTRF 4.7 ± 20% 50 0.09 1.5 1.5
NPI16W6R8MTRF 6.8 ± 20% 45 0.13 1.4 1.2
NPI16W100MTRF 10 ± 20% 35 0.16 1.1 1.1
NPI16W150MTRF 15 ± 20% 30 0.23 1.0 0.90
NPI16W220MTRF 22 ± 20% 20 0.37 0.80 0.70
NPI16W330MTRF 33 ± 20% 15 0.51 0.60 0.58
NPI16W470MTRF 47 ± 20% 14 0.64 0.50 0.50
NPI16W680MTRF 68 ± 20% 11 0.86 0.40 0.50
NPI16W101MTRF 100 ± 20% 9.0 1.27 0.30 0.31
NPI16W151MTRF 150 ± 20% 6.0 2.00 0.25 0.27
NPI16W221MTRF 220 ± 20% 5.5 3.11 0.20 0.22
NPI16W331MTRF 330 ± 20% 5.0 3.80 0.16 0.18
NPI16W471MTRF 470 ± 20% 4.0 6.78 0.15 0.16
NPI16W681MTRF 680 ± 20% 3.0 9.20 0.12 0.14
NPI16W102MTRF 1000 ± 20% 2.0 13.8 0.07 0.10
Maximum +40°C temperature rise at Irms. Typcial -10% inductance change at Isat.
Part Number
STANDARD VALUES - CASE SIZE 31 (10.0 x 12.7 x 5.0mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI31W1R0MTRF 1.0 ± 20% 150 0.009 6.8 9.0
100KHz
NPI31W1R5MTRF 1.5 ± 20% 100 0.010 6.4 8.0
NPI31W2R2MTRF 2.2 ± 20% 85 0.012 6.1 7.0
NPI31W3R3MTRF 3.3 ± 20% 60 0.015 5.4 5.8
NPI31W4R7MTRF 4.7 ± 20% 45 0.018 4.8 5.2
NPI31W6R8MTRF 6.8 ± 20% 35 0.027 4.4 4.3
NPI31W100MTRF 10 ± 20% 25 0.038 3.9 3.4
NPI31W150MTRF 15 ± 20% 20 0.046 3.1 3.0
NPI31W220MTRF 22 ± 20% 18 0.085 2.7 2.5
NPI31W330MTRF 33 ± 20% 14 0.10 2.1 2.0
NPI31W470MTRF 47 ± 20% 11 0.14 1.8 1.8
NPI31W680MTRF 68 ± 20% 10 0.20 1.5 1.4
NPI31W101MTRF 100 ± 20% 7.0 0.28 1.3 1.2
NPI31W151MTRF 150 ± 20% 6.5 0.40 1.0 0.9
NPI31W221MTRF 220 ± 20% 5.0 0.61 0.8 0.8
NPI31W331MTRF 330 ± 20% 4.0 1.02 0.6 0.6
NPI31W471MTRF 470 ± 20% 3.0 1.27 0.5 0.5
NPI31W681MTRF 680 ± 20% 2.5 2.02 0.4 0.4
NPI31W values continue on next page
Maximum +40°C temperature rise at Irms. Typical -10% inductance change at Isat.
3NIC COMPONENTS CORP. www.niccomp.com www.lowESR.com www.RFpassives.com www.SMTmagnetics.com
®
Specications are subject to change
NPI Power Inductors NPI__W Series
Part Number
STANDARD VALUES - CASE SIZE 52 (15.0 x 18.4 x 7.0mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI52W1R0MTRF 1.0 ± 20% 140 0.009 8.6 20
100KHz
NPI52W1R5MTRF 1.5 ± 20% 110 0.012 7.5 18
NPI52W2R2MTRF 2.2 ± 20% 75 0.014 7.1 16
NPI52W3R3MTRF 3.3 ± 20% 70 0.018 6.2 14
NPI52W4R7MTRF 4.7 ± 20% 55 0.019 5.8 13
NPI52W5R6MTRF 5.6 ± 20% 45 0.020 5.3 12
NPI52W8R2MTRF 8.2 ± 20% 23 0.025 4.7 11
NPI52W100MTRF 10 ± 20% 21 0.031 4.3 10
NPI52W150MTRF 15 ± 20% 16 0.036 4.0 8.0
NPI52W220MTRF 22 ± 20% 13 0.047 3.5 7.0
NPI52W330MTRF 33 ± 20% 11 0.066 3.0 5.5
NPI52W values continue on next page
Part Number
STANDARD VALUES - CASE SIZE 34 (10.0 x 12.7 x 11mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI34W100MTRF 10 ± 20% 23 0.040 3.50 7.0
100KHz
NPI34W150MTRF 15 ± 20% 14 0.050 3.20 5.8
NPI34W220MTRF 22 ± 20% 8.5 0.066 2.90 4.8
NPI34W330MTRF 33 ± 20% 7.0 0.080 2.35 3.8
NPI34W470MTRF 47 ± 20% 6.5 0.110 2.10 3.4
NPI34W680MTRF 68 ± 20% 4.5 0.170 1.90 2.7
NPI34W101MTRF 100 ± 20% 4.0 0.220 1.55 2.2
NPI34W151MTRF 150 ± 20% 3.0 0.340 1.35 1.9
NPI34W221MTRF 220 ± 20% 2.5 0.440 1.00 1.5
NPI34W331MTRF 330 ± 20% 2.3 0.700 0.90 1.3
NPI34W471MTRF 470 ± 20% 2.0 0.950 0.75 1.0
NPI34W681MTRF 680 ± 20% 1.5 1.20 0.55 0.9
NPI34W102MTRF 1000 ± 20% 1.3 2.00 0.50 0.7
Maximum +40°C temperature rise at Irms. Typical -10% inductance change at Isat.
Maximum +40°C temperature rise at Irms. Typcial -10% inductance change at Isat.
Part Number
STANDARD VALUES - CASE SIZE 31 (10.0 x 12.7 x 5.0mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI31W102MTRF 1000 ± 20% 2.0 3.00 0.3 0.3
100KHz
NPI31W152MTRF 1500 ± 20% 1.3 4.49 0.27 0.29
NPI31W222MTRF 2200 ± 20% 1.23 8.50 0.20 0.25
NPI31W332MTRF 3300 ± 20% 0.87 11.20 0.17 0.19
Maximum +40°C temperature rise at Irms. Typical -10% inductance change at Isat.
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Specications are subject to change
NPI Power Inductors NPI__W Series
Case Size TAPING DIMENSIONS (mm)
Ao Bo Co Ko W Po
NPI16W 4.60 6.70 4.25 3.20 12.0 8.0
NPI31W 10.00 13.50 11.50 5.60 24.0 12.0
NPI34W 10.00 13.50 11.50 11.6 24.0 20.0
NPI52W 15.40 18.70 14.25 7.60 32.0 20.0
REFLOW SOLDERING PROFILE
Soldering 260°C max.
5 seconds max.
Cool Down
60 ~ 120 sec.
25
50
100
150
200
250
300
Pre-Heat
150°C ~ 180°C
Time above 230°C
30 seconds max.
30 60 90 120 150 180 210 240 270 300
Time - Seconds
Temperature °C
W
Co
Ao
Po
Ko
Bo
1.5mm ± 0.1
4.0mm 0.5mm ± 0.05
1.75mm
±0.1
Part Number
STANDARD VALUES - CASE SIZE 52 (15.0 x 18.4 x 7.0mm)
Inductance Value
(µH)
SRF (Typical)
MHz
DC Resistance
(Ω)
DC Current
Irms (Amps)
DC Current
Isat (Amps) Test Frequency
NPI52W470MTRF 47 ± 20% 9.0 0.086 2.6 4.5
100KHz
NPI52W680MTRF 68 ± 20% 6.5 0.13 2.3 3.5
NPI52W101MTRF 100 ± 20% 5.7 0.19 1.8 3.0
NPI52W151MTRF 150 ± 20% 4.5 0.25 1.5 2.6
NPI52W221MTRF 220 ± 20% 3.7 0.38 1.2 2.4
NPI52W331MTRF 330 ± 20% 3.0 0.56 1.0 1.9
NPI52W471MTRF 470 ± 20% 2.7 0.85 0.82 1.4
NPI52W681MTRF 680 ± 20% 2.2 1.10 0.72 1.2
NPI52W102MTRF 1000 ± 20% 2.0 1.80 0.56 1.0
NPI52W472MTRF 4700 ± 20% -7.50 0.25 0.35
Maximum +40°C temperature rise at Irms. Typcial -10% inductance change at Isat.
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Specications are subject to change
Size REEL QUANTITY PER CASE SIZE
NPI16W NPI22W NPI31W NPI34W NPI52W
Quantity per reel 2500 1000 500 225 250
Tape Width 16mm 24mm 24mm 32mm 32mm
Tape Width REEL DIMENSIONS (mm)
A(mm) B(mm) C(mm) D(mm)
16mm 16.5±0.1
100±1 13±0.5 33024mm 24.5±0.1
32mm 32.5±0.1
B
C
D
A
NPI Power Inductors NPI__W Series