Automotive-Grade

Molded Power Choke
2024

1Molded Power Choke
2009

Application Guides

UPI Series

Cold press molding
Lead-Frame Terminal(or Solder Terminal)

2014

HPI Series

Cold and Hot press molding
Lead-Frame Terminal

2018

PHP Series

Cold and Hot press molding
Electroplated Terminal

2023

TUP Series

New Cold & Hot press molding
Electroplated Terminal

2024

CTP Series

New Cold & Hot press molding
Lead-Frame Terminal

Comfort

Car-Body

SafetyPowertrain

In-Vehicle Infotainment

Lighting (LED)

ADAS/AD ECUEngine ECU

Drive Recorder

Smart Entry SystemBrake(ABS, ESC, Boost Brake)

Transmission ECUCharging WiredTPMSMotor Actuator (Brush)
Radar

Charging WirelessTelematics Control Unit

Car Audio

DSRC

Motor Actuator (BLDC)
Parking Assist(View Camera)

Zone ECU

2Molded Power Choke
UPI Series
CoilSolder Terminal

PowderL x W (mm)Height-Max (mm)L (uH)

UPI / UPIM / AUPI 06

7.1x6.6

2.4/3.0/4.0

0.22~22

UPI / UPIM / AUPI 08

8.6x8.1

2.4/3.0/4.0

0.22~47

UPI / UPIM / AUPI 10

11.0x10.0

3.0/4.0/5.0

0.22~47

UPI / UPIM / AUPI 12

13.4x12.6

3.0/5.0/7.00.22~47

UPI / UPIM / AUPI 15

15.7x15.0

4.0/8.0

0.22~47

UPI / UPIM / AUPI 17

17.3x17.0

4.0/7.0

0.22~100

UPI / UPIM / AUPI 22

22.5x22.0

13.0

0.22~100

Lead-Frame◆ As the first generation of molded inductor, UPI series has below 6
advantages comparing with traditional assembled powder inductor(ferrite) ：1. Large current; 2. Stable magnetic saturation; 3. Temperature characteristic
independent of ambient temp；4. Low audible noise；5. Slight magnetic
disturbance; 6. Good shock resistance◆DRH0630：6*6*3 mm

DRH105R：10*10*5 mm

Automotive-Grade series: 125℃ UPIM (B/F) series / 155℃ AUPI series

UPIMB

UPIMF / AUPI

Carbonyl iron powder

Alloy iron powder
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Molded Power Choke
HPI Series
CoilCoilHot
Coldwinding pressing pressing◆Powder

L x W (mm)Height-Max (mm)L (uH)

HPI / HPIM / AHPI 03

3.4x3.0

1.0/1.2/1.5/2.0

0.12~10

HPI / HPIM / AHPI 04

4.4x4.0

1.0/1.2/1.5/2.0

0.12~22

HPI / HPIM / AHPI 05

5.5x5.2

1.0/1.2/1.5/2.0

0.12~22

Lead-Frame◆

Automotive-Grade series: 125℃ HPIM series / 155℃ AHPI series◆The coil can be designed to the limit by Cold & Hot-press. and make theCold & Hot-press： Cold pressing goes through semi-finished productpressing in room-temperature as first step and then performs hotpressing( by mold heating) on semi-finished product. Semi-finished productstays in the heated mold for a short time after molding, which would heatand solidify the product surface. After that, product would go throughbaking and become solidified completely.
◆The cold and hot press is upgraded and the pressure is around 50% of thecold press; less deform in the coil inside the product makes higher

Power Choke performance reach the best!

reliability.
4Molded Power Choke
CoatingSlivering

PHP Series

PowderL x W (mm) Height-Max (mm)Coil（flat-wire）

ElectroplatedTerminal

L (uH)

PHP / PHPM / APHP 2016

2.0x1.6

1.0/1.2

0.22~4.7

PHP / PHPM / APHP 2520

2.5x2.0

1.0/1.2

0.22~10

PHP / PHPM / APHP 3225

3.2x2.5

1.0/1.2/2.0

0.22~10◆

Automotive-Grade series: 125℃ PHPM series / 155℃ APHP series◆ The silvering terminals of PHP series pass terminal strength test of AECQ200.
CoatingPowder

Wire leadLeadFramePHPHPI◆ The Coil of PHP series product could achieve better size without taking thespace for Lead-Frame into consideration.

Copper Film

◆ A larger copper wire outlet ensures good electrical conductivity.
◆ The copper lead area is increased to be the whole terminal surface, which
increases the contact area of copper and silver paste to improve thereliability of terminals.
5New Product Release 2023

New Molding Power Inductor
04 / 05 / 06 / 07 / 08 / 10 / 15Thickness max. 2.1mm ~ 13.0mm

Magnetic Shielded
Low Loss & Low DCR

TUP SeriesHigh Current & High Power
Wide frequency range from 100KHz~5MHz

Fit for DC-DC converter / Server / PC and PC/NB/Phone Charger.
（ TUPM and ATUP Series fit for automotive application ）Molded Power Choke
TUP Series
Electroplated
Terminal

L x W (mm)Height-Max (mm)L (uH)

TUP / TUPM / ATUP 04

4.1x4.1

2.1/3.0

0.10~6.80

TUP / TUPM / ATUP 05

5.5x5.3

2.1/3.1/5.0

0.15~22.0

TUP / TUPM / ATUP 06

6.6x6.4

3.1/5.0/6.0

0.12~22.0

TUP / TUPM / ATUP 07

7.8x7.6

2.1/3.1/7.0

0.27~8.20◆ With latest cold pressing and hot pressing technology, TUP series have

TUP / TUPM / ATUP 08

8.9x8.5

8.0

1.80~10.0

the maximum powder density after pressing among all molded inductor

TUP / TUPM / ATUP 1011.9x11.0

3.1/6.0/10

0.28~15.0

series and achieve maximum Ui of core , which further improves theTUP / TUPM / ATUP 15

16.5x15.5

8.0/10/13

2.00~33.0Powder

Coil（flat-wire）

product electrical performance on the base of THP series product.

◆Automotive-Grade series: 125℃ TUPM series / 155℃ ATUP series◆ Smaller molding pressure is used to achieve required product density, sothe deformation rate of coil during molding is reduced.

◆ Short/Open control of TUP series，
Defective rate of inductor short within 3L could be ＜30 PPM and defective rate

◆ TUP has small compression ratio(TUP ＜ HPI ＜ UPI), which couldof inductor short at end user could be ＜3 PPM ；reach very low defective rate of short/open to ensure high reliability andDefective rate of inductor open within 3L could be 0 PPM and defective rate of

become the best automotive degree product.

inductor open at end user could be 0 PPM；
7Molded Power Choke

Compression ratio：

1.50

TUP Series＜Compression ratio：

2.04＜Compression ratio：

2.32(Before - Pressing – After)(Before - Pressing – After)(Before - Pressing – After)

Copper wire diameter：0.19mm*1.0mm
Vertical compression ratio of copper wire:

Copper wire diameter ：φ0.35mm
Vertical compression ratio of copper wire:

Copper wire diameter ：φ0.32mm
Vertical compression ratio of copper wire :

1.21

1.32

1.35

TUP0503-1R5M

HPI0503-1R5M

UPI0503-1R5M

L

1.5uH Typ.

L

1.5uH Typ.

L

1.5uH Typ.

DCR

8.1mΩ Typ.

DCR15mΩ Typ.

DCR18mΩ Typ.

Isat

14.0A Typ.

Isat

12.0A Typ.

Isat

10.0A Typ.

Irms

10.5A Typ.

Irms

8.20A Typ.

Irms

7.20A Typ.

Best performance! Highest reliability!

＞＞8

New Product Release 2024

New Molding Power Inductor
04 / 05 / 06 / 07
Thickness max. 2.1mm ~ 7.0mm

Magnetic Shielded
Low Loss & Low DCR

BTU SeriesHigh current & High power by High-density powder
Operating Temperature Range -55℃ to +155℃

Fit for DC-DC converter / Server / PC and PC/NB/Phone Charger.

New Product Release 2024

New Molding Power Inductor
04 / 05 / 06 / 07
Thickness max. 2.1mm ~ 7.0mm

Magnetic Shielded
Low Loss & Low DCR

CTP SeriesHigh current & High power by High-density powder
Operating Temperature Range -55℃ to +155℃

High reliability and High efficiency for automotive application

Molded Power Choke
BTU Series

CTP Series

Electroplated
Terminal

PowderPowderCoil（flat-wire）◆ Different from small PIN design of TUP series, BTU series have larger

Lead-Frame

Coil（ round-wire ）◆ Different from flat-wire coil design of TUP series, round-wire soldered

PIN, higher terminal strength, and better winding and forming technology.

with copper strip is applied in CTP, which could achieve higher

Comparing with TUP series, BTU series can adopt larger flat-wireinductance(such as 100uH).

winding to achieve lower DCR in low-inductance product.
◆ Smaller molding pressure is used to achieve required product density, so◆ Smaller molding pressure is used to achieve required product density, so

the deformation rate of coil during molding is reduced.

the deformation rate of coil during molding is reduced.
◆ CTP has small compression ratio(CTP ＜ HPI ＜ UPI), which could◆ BTU has small compression ratio(BTU = TUP ＜ HPI ＜ UPI), which
could reach very low defective rate of short/open to ensure high reliability

reach very low defective rate of short/open to ensure high reliability andbecome the best automotive degree product.

and become the best automotive degree product.
11

Molded Power Choke
CategoryTrend

ATUP→Automotive(155℃)→Higher Operating
Temperature→More SizeBTU→General(125℃)→Higher costefficiency（HighCurrent & Low price）

Roadmap 2023~2026

2023 Q3Q42024 Q1Q2

2024 Q3Q42025 Q1Q2

2025 Q3Q42026 Q1Q2

MP :Sep`2023

MP :Mar`2024

MP :Sep`2024

MP :Mar`2025

MP :Sep`2025

MP :Mar`2026

ATUP 0403

ATUP 0421

ATUP 0707

ATUP 0721

ATUP1010

ATUP1031

ATUP 0505

ATUP 0521

ATUP 0808

ATUP 0731

ATUP1513

ATUP1006

ATUP 0631

ATUP 0531

ATUP 0606

ATUP 0605

MP :Mar`2024

BTU 0531

ATUP1508
ATUP1510

Automotive & More Size

MP :Sep`2024
BTU 0521

MP :Mar`2025
BTU 0606

BTU 0505

MP :Sep`2025

MP :Mar`2026

BTU 0631

BTU 0421

BTU 0605

BTU 0403
BTU 0731

Preferred alternative to TUP
CTP→Automotive(155℃)→Higher Operating
Temperature→Ultra highinductance

General(125℃) & Higher cost-efficiency

MP :Sep`2024
CTP 0530

MP :Mar`2025
CTP 0645

BTU 0707

MP :Sep`2025
CTP 0754

MP :Mar`2026
CTP 0421

Automotive & Ultra high inductance12

Molded Power Choke

Reliability Test - CNAS recognition

Laboratory of 3L Electronic(Zhongshan) Co,.Ltd is authorized to complete reliability test.

(Biased) Humidity test / Operational Life Test

Low & High temperature Storage Test

Thermal shock Test

Temperature
Cycling Test

VibrationTest
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THANKSwww.3lcoil.com

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