SMD Inductors
Large-Current Power Inductors TPI
Overview
Applications
The KEMET TPI ferrite core inductors are designed for
a very low core loss. Its flat wire, “one turn through the
construction” design, enables high efficiency at large
currents. The core material is ideal for high switching
frequency applications.
• Hard-switching topology for DC/DC conversion
• Soft-switching topology for AC resonant conversion
• Point of loads (POL)
• Servers and storage
• Supercomputers
• Various decentralized power supplies
The TPI series offers two solutions. One set of parts
are DC optimized inductors for hard SW topology, 12 V
power distribution. The other set comprises AC optimized
inductors for soft SW topology, 48 V power distribution.
These AC optimized inductors were developed for STC
(Switched Tank Convertor) technology.
Benefits
• One turn coil ferrite
• Operating temperature up to +125°C
• High switching frequency
• Low core loss
• Low DCR
• High current
• Low self-heating
• AC optimized inductor reduce close to 50% the total loss
compared to conventional inductor due to optimized
structure and material designed for STC technology
Part Number System
TPI
128080
L
180
N
Series
Size Code
Inductor
Inductance Code nH
Version
TPI
077050
078060
111065
118082
128080
xxx = xxx nH
N = Standard
Built Into Tomorrow
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
L9010_TPI • 11/27/2023
1
SMD Inductors
Large-Current Power Inductors TPI
Performance Characteristics
Item
Performance Characteristics
Operating Temperature
Rated Inductance Range
Inductance Tolerance
Rated DC Resistance
DC Resistance Tolerance
Rated Current
–40°C to +125°C (including self-temperature rise)
47 – 230 nH at 100 kHz, 1 mA
±10% (except ±20% for TPI077050L105N)
0.29 – 0.32 mΩ
±5% (except ±9.5% for TPI077050L105N and ±10.0% for TPI078060L***N)
36 – 53 A
Table 1 – Ratings & Part Number Reference – DC Optimized TPI Inductors
Inductance
Tolerance
TPI077050L105N
105
±20%
0.32 ±9.5%
36
TPI118082L150N
150
±10%
0.29 ±5.0%
50
Part Number
DC Resistance
(mΩ)
Rated Current (A)
Inductance (nH)
at 100 kHz, 1 mA
Irms (Ref.)
Isat2 (Ref.)
1
25°C
Weight
(g)
85°C
125°C
60
51
44
1.0
93
79
67
3.0
3.0
TPI118082L180N
180
±10%
0.29 ±5.0%
50
79
67
57
TPI111065L210N
210
±10%
0.29 ±5.0%
50
54
46
38
3.1
TPI128080L180N
180
±10%
0.29 ±5.0%
50
78
68
54
3.5
TPI128080L210N
210
±10%
0.29 ±5.0%
50
70
60
52
3.5
TPI128080L230N
230
±10%
0.29 ±5.0%
50
64
56
50
3.5
T = 40 K rise at rated current
Inductance drop 20% at rated current
All electrical characteristics data is referenced to 25°C.
1
2
Table 2 – Ratings & Part Number Reference – AC Optimized TPI Inductors
Rated Current (A)
Part Number
Inductance (nH)
at 100 kHz, 1 mA
Inductance
Tolerance
DC
Resistance (mΩ)
Irms (Ref.)
25°C
85°C
TPI078060L047N
47
±10%
0.31 ±10.0%
53
90
75
67
1.2
TPI078060L056N
56
±10%
0.31 ±10.0%
53
81
67
58
1.2
TPI078060L068N
68
±10%
0.31 ±10.0%
53
69
58
50
1.2
TPI078060L082N
82
±10%
0.31 ±10.0%
53
54
46
40
1.2
1
Isat2 (Ref.)
125°C
Weight
(g)
T = 40 K rise at rated current
Inductance drop 20% at rated current
All electrical characteristics data is referenced to 25°C.
1
2
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
L9010_TPI • 11/27/2023
2
SMD Inductors
Large-Current Power Inductors TPI
DC-Superposed Characteristics
300
TPI077050L105N
25°C
100
125°C
200
150
100
50
0
20
40
IDC (A)
60
TPI078060L056N
25°C
85°C
125°C
40
20
0
20
40
60
IDC (A)
80
TPI078060L082N
25°C
85°C
Inductance (nH)
Inductance (nH)
40
20
100
25°C
85°C
125°C
20
0
20
40
60
IDC (A)
80
100
TPI118082L150N
25°C
85°C
125°C
200
150
100
50
0
20
40
60
80
0
100
TPI118082L180N
25°C
85°C
300
125°C
200
150
100
0
20
40
60
IDC (A)
80
100
120
TPI111065L210N
25°C
250
Inductance (nH)
250
Inductance (nH)
80
40
IDC (A)
85°C
125°C
200
150
100
50
50
0
40
60
IDC (A)
TPI078060L068N
250
60
300
20
60
300
125°C
0
80
0
100
80
0
125°C
20
100
60
100
85°C
40
80
80
0
25°C
60
0
0
Inductance (nH)
Inductance (nH)
100
TPI078060L047N
80
Inductance (nH)
Inductance (nH)
250
85°C
0
0
20
40
60
IDC (A)
80
100
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
120
0
20
40
IDC (A)
60
80
L9010_TPI • 11/27/2023
3
SMD Inductors
Large-Current Power Inductors TPI
DC-Superposed Characteristics cont.
300
TPI128080L180N
25°C
200
150
100
300
0
25°C
250
85°C
125°C
200
150
100
20
40
60
IDC (A)
80
100
0
0
20
40
IDC (A)
60
80
100
TPI128080L230N
25°C
250
Inductance (nH)
TPI128080L210N
50
50
0
300
125°C
Inductance (nH)
Inductance (nH)
250
85°C
85°C
125°C
200
150
100
50
0
0
20
40
60
IDC (A)
80
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
100
L9010_TPI • 11/27/2023
4
SMD Inductors
Large-Current Power Inductors TPI
Dimensions
Case Size
Dimensions (mm)
(1.5)
2.8
(1.5)
2.8
2.8
5.0 maximum
TPI077050
3.5
2.5 ±0.1
7.0 maximum
7.0 maximum
Land Pattern (mm)
8.0 maximum
7.0 maximum
(1.5)
(1.5)
6.0 maximum
TPI078060
5.0
4 ±0.25
2.5 ±0.1
3.5
11.2 maximum
(2.2)
(2.2)
5.5
8.2 maximum
4.5
3.5 ±0.1
11.6 maximum
(2.0)
(2.0)
4.5
5.8
6.5 maximum
4.5
8.0 maximum
2.3 ±0.1
3.3
8.0 maximum
12.0 maximum
(2.2)
TPI128080
3.5
3.5
10.0 maximum
TPI111065
2.5
3.0
8.0 maximum
TPI118082
3.0
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
(2.2)
3.5
6.3
3.5
L9010_TPI • 11/27/2023
5
SMD Inductors
Large-Current Power Inductors TPI
Taping Specification
Dimensions of Indented Square Hole Plastic Tape
P0
øD0
P2
E1
W
F
T
P1
Reel Dimensions
1,000
TPI078060
D
T
TPI118082
1,000
TPI111065
500
TPI128080
400
400
F
E1
P1
P2
P0
øD0
T
±0.10
1.75
±0.10
1.75
E
±0.101
1.75
±0.10
1.75
±0.10
1.75
±0.10
12.00
±0.10
12.00
±0.10
16.00
±0.10
16.00
±0.10
16.00
±0.10
2.00
±0.10
2.00
±0.10
2.00
±0.10
2.00
±0.10
2.00
±0.10
4.00
±0.10
4.00
±0.10
4.00
±0.10
4.00
±0.10
4.00
±0.05
1.55
±0.05
1.55
±0.05
1.55
±0.05
1.55
±0.05
1.55
±0.05
0.40
±0.05
0.40
±0.05
0.40
±0.05
0.40
±0.05
0.40
W
TPI077050
Dimensions of Indented
W
W1
Tolerance
±0.30
±0.10
Nominal
16.00
7.50
Square
Plastic Tape
ToleranceHole ±0.30
±0.10
Nominal
16.00
7.50
øD0
P0
Tolerance P ±0.30
±0.10
2
Nominal
24.00
11.50
Tolerance
±0.30
±0.10
Nominal
24.00
11.50
Tolerance
±0.30
±0.10
W
Nominal
24.00
11.502
F
C
Dimensions (mm)
Reel
Quantity
A
B
Case
SizeE
P1
Reel Specifications
Reel Dimensions
E
C
W1
A
B
D
W2
Dimensions (mm)
Case
Size
TPI077050
TPI078060
TPI118082
TPI111065
TPI128080
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
Tolerance
Nominal
A
B
C
D
E
±2.0
ø330
±2.0
ø380
±2.0
ø330
±2.0
ø330
±2.0
ø330
±1.0
ø100
±1.0
ø80
±1.0
ø100
±1.0
ø100
±1.0
ø100
±0.2
ø13.2
±0.2
ø13.0
±0.2
ø13.2
±0.2
ø13.2
±0.2
ø13.2
±0.2
ø21.5
±0.2
ø21.0
±0.2
ø21.5
±0.2
ø21.5
±0.2
ø21.5
±0.3
2.0
±0.3
2.3
±0.3
2.3
±0.3
2.0
±0.3
2.0
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
W1
W2
16.5
20.9
17.5
21.5
24.5
28.9
24.5
28.9
24.5
28.9
L9010_TPI • 11/27/2023
6
SMD Inductors
Large-Current Power Inductors TPI
Soldering Process
Recommended Reflow Soldering Profile
Reference ICP/JEDEC J-STD-020E
Pb-Free Assembly
Preheat/Soak
Temperature minimum (TSmin)
Temperature maximum (TSmax)
Time (ts) from Tsmin to Tsmax
150°C
200°C
60 – 120 seconds
Ramp-up rate (TL to TP)
3°C/second maximum
Liquidous Temperature (TL)
217°C
Time Above Liquidous (tL)
60 – 150 seconds
Peak Temperature (TP)
245°C for TPI1xxxxx
250°C for
TPI077050 and TPI078060
Time within 5°C of
Maximum Peak temperature (tP)
30 seconds maximum
Ramp-down Rate (TP to TL)
6°C/second maximum
Time 25°C to Peak Temperature
8 minutes maximum
TP
TL
Temperature
Profile Feature
tP
Maximum Ramp-up Rate = 3°C/second
Maximum Ramp-down Rate = 6°C/second
tL
Tsmax
Tsmin
25
ts
25°C to Peak
Time
Environmental Compliance
All KEMET SMD Inductors are RoHS compliant.
Handling Precautions
Inductors should be stored in normal working environments. While the inductors themselves are quite robust in other
environments, solderability will be degraded by exposure to high temperatures, high humidity, corrosive atmospheres, and
long term storage.
KEMET recommends that maximum storage temperature not exceed 40°C and maximum storage humidity not exceed 70%
relative humidity. Atmospheres should be free of chlorine and sulfur bearing compounds. Temperature fluctuations should
be minimized to avoid condensation on the parts.
For optimized solderability, inductors’ stock should be used promptly, preferably within six months of receipt.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
L9010_TPI • 11/27/2023
7
SMD Inductors
Large-Current Power Inductors TPI
KEMET Electronics Corporation Sales Offices
For a complete list of our global sales offices, please visit www.kemet.com/sales.
Disclaimer
YAGEO Corporation and its affiliates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space flight.
All product specifications, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET specifically disclaims – any warranty concerning suitability for a specific customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes no
obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury or
property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicated or that other
measures may not be required.
When providing KEMET products and technologies contained herein to other countries, the customer must abide by the procedures and provisions stipulated in all
applicable export laws and regulations, including without limitation the International Traffic in Arms Regulations (ITAR), the US Export Administration Regulations
(EAR) and the Japan Foreign Exchange and Foreign Trade Act.
KEMET is a registered trademark of KEMET Electronics Corporation.
© KEMET Electronics Corporation • One East Broward Boulevard
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
L9010_TPI • 11/27/2023
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