Electric Two-Wheeler &Three-Wheeler Solutions
Transportation

Users must independently evaluate the suitability of and test each product selected for their own specific applications. It is the User’s sole responsibility to determine fitness for aparticular system or use based on their own performance criteria, conditions, specific application, compatibility with other parts, and environmental conditions. Users must
independently provide appropriate design and operating safeguards to minimize any risks associated with their applications and products. Littelfuse products are not designed
for, and may not be used in, all applications. Read complete Disclaimer Notice at littelfuse.com/disclaimer-electronics.
REV1022

By fulfilling zero-emission mandates, electric
two-wheelers and three-wheelers help improve air quality
Battery capacity 500 Wh

Electric bike
(250−900 W)

1,000 Wh

3,000 Wh

5,000 Wh

7,000 Wh

10,000 Wh

Electric motorcycle
Asia: (3−25 kW)
Rest of the world: (20−200 kW)
Electric utility vehicle(5−20 kW)

e-Kick scooter(600 W−1.5 kW)

Electric two-wheeler(400 W−4 kW)

Electric three-wheeler(2−8 kW)

Battery voltage range: 24–96 V
Littelfuse, Inc. © 20222

Electric two-wheeler andthree-wheeler market trends and drivers
Rapid growth of electric
two-wheelers and three-wheelers

Market trends and drivers
25

The global electric two-wheeler and three-wheeler Li-ion battery pack market
has shown double-digit growth. The limited life cycle and usable capacity arelikely to shift the focus from lead acid batteries to
Li-ion batteries

20

Li-ion batteries are lightweight, which helps maintain the energy-to-weight ratioof the vehicle
Most battery packs are 48 V; higher-end models (> 20 kW) also come with
60−96 V battery pack
Asia Pacific is expected to be the largest market. China spent about $2.4 B by
2020 to improve its charging facility infrastructure
The Indian government has undertaken initiatives, such as FAME-II, offeringsubsidies and tax exemptions to encourage buyers to change from ICE bikes
to electric two-wheeler and three-wheeler to reduce Carbon emissions
Currently, 27 European countries have imposed taxes on carbon dioxide
emissions related to vehicles

Million Units

The global electric two-wheeler and three-wheeler market is projected to growfrom 1.05 M units in 2021 to 19.11 M units by 2031, at a CAGR of ~34%

15

10

5

0

2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031
ROW*

Asia-PacificSource: CEEW, Littelfuse estimates (does not include kick scooter, electric bike, or Chinese
electric two-wheeler forecast)* Rest of the world

Littelfuse, Inc. © 2022

3

Electric two-wheeler andthree-wheeler system architecture

Littelfuse, Inc. © 2022

4

Littelfuse solutions for electric two-wheelers
Comfort Unit
1

1

USB / Charging Port TVS Diode PPTC
2

2

7

5

6

Power Distribution Unit

 Fuse Fuse Holder

8Side Stand

7
3

9

 C&K Tactile Switch
 C&K KeySwitch
89Handle Grip Control

4

ECU / Motor Drive TVS Diode  Hall Effect MOSFET
 NTC
 Rectifier Diode

Lighting

 TVS Diode MOV
6 Reed Switch

4

5

Cluster TVS Diode PPTC
3

Safety Unit

On-Board Charger

 Fuse MOV
 TVS Diode

 SCR
 Diode NTCBMS Fuse TVS Diode Diode Array
 NTC

 Reed Switch
 C&K Snap
SwitchLittelfuse, Inc. © 20225

Littelfuse solutions for electric three-wheelers
1Lighting

1

ECU / Motor Drive TVS Diode MOV

 TVS Diode  Hall Effect MOSFET
 NTC
 Rectifier Diode

2

1

Power Distribution Unit

 Fuse Fuse Holder
 Fuse box

3

1

4

On-Board Charger

 Fuse MOV
 TVS Diode

2

 SCR
 Diode
 NTC

3

BMS

 Fuse TVS Diode TVS Diode Array NTC, Reed Switch
 HV DC Contactor Relay
Acronyms:

5

TVS: Transient-Voltage Suppression
MOV: Metal Oxide Varistor
NTC: Negative Temperature Coefficient
SCR: Silicon Controlled Rectifier (Thyristor)
HV DC: High Voltage Direct Current

Littelfuse, Inc. © 2022

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A

Click the product series in thetable below for more info

Battery Management System
Leakagecurrent tochassisLi-ion cells

Batteryswapping

4Li-ion cells

Technology

SeriesFuse

MIDI 70V, Mega, BF1 32V,
881, LP Jcase, ATO

TVS Diode

TPSMB

Fuse

438A, 437A,
MINI, 521

HV DC Contactor
Relay*

DCNEV,DCNLEV, DCNLR

2

NTC**

Leaded,Surface Mount

3

3

TVS Diode Array

AQ24CANA

Reed Switch

MDSR-10

Battery−

4
C&K Switch

ZMS, ZMSM, LCS,
KSC, ZMV, ZMW

Solid State Relay***

CPC1009N

5

Battery
management
unit

Thermalcoupling

Cell
protection
moduleBattery+
Aux output
Sense lines

To charger

2

Battery
disconnect
unit

1

1

I/O
communicationinterface

5

Legend:Power
Data* Recommended for three-wheeler vehicles** Thermally coupled with Li-ion cells*** Suitable for high-end two wheelers with Vbat > 60 V
Littelfuse, Inc. © 2022

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Click on the product series inthe table below for more info

Benefits of recommended Littelfuse productsTechnology

Function in application

Product series

Benefits

Features

Fuse

Protects from short circuits andoverloaded circuits

MIDI 70V, Mega,
BF1 32V, 881, LP
Jcase, ATO

Provides safety protection in low- andmedium-voltage environments; full-range fuses

Bolt down, bladed, and SMD form factors;
high breaking capacity; meets ISO 8820 standard
or new AEC-Q specification

TVS Diode

Suppression of transient voltage

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

1
Fuse

Protects cells and downstream BMS parts
from high fault currents due to external
shorts

438A, 437A,
MINI, 521

Excellent temperature stability and performancereliability; compact design; ceramic substrateensures compatibility with high-temperatureenvironment

Meets new AEC-Q specification;
fast response to fault current; surface mount device

HV DC Contactor
Relay

Connects and disconnects battery frommain circuitry

DCNEV, DCNLEV,DCNLRAllows a low-voltage signal to switch the contacts
for a high-voltage signal

Wide range of capabilities: can switch from tens ofamps to thousands of amps, and tens of volts tothousands of volts

2

NTC

Measures semiconductor temperature

Leaded,Surface Mount

Allows for high-precision temperature
measurement in harsher environments

UL Recognized with ring lug mounting;
SMD NTCs in hermetically sealed MELF
package suitable for operation up to 220 °C

3

TVS Diode Array

Protects sensitive electronic ICs from ESD,
EFT, and voltage spikes

AQ24CANA

Ensures reliability of the equipment without
performance degradation of communication lines

AEC-Q101 qualified; meets ESD protection levels
specified under IEC 61000-4-2 and ISO 10605;
low leakage current and clamping voltage

Reed Switch

Provides the control signal for thebattery pack

MDSR-10

Contamination resistant; compact design

Switches up to 200 Vdc or 0.5 A at up to 10 W,
1012 Ω insulation resistanceC&K Switch

Enables battery detection switching

ZMS, ZMSM, LCS,
KSC, ZMV, ZMWLong electrical and mechanical life; ideal whenspace is limited

IP65/IP67; SPST NO/SPST NC/SPDT;
compact size

CPC1009N

Robust operation in a small four-pin package

1500-V I/O isolation; low drive requirements; noarching

45

Solid State Relay

Normally open, single pole relay

Littelfuse, Inc. © 2022

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B

Click the product series in thetable below for more info

ECU / Motor Drive
Batterypack

Reversepolarity power
bridgeprotection

DC input
protection

2

Power
bridgeGatedriver

Coolingsystem1
3

1

4

Auxiliary power2

I/O
communicationinterface

3

5
MCU
Legend:Power
Data
Acronyms:
AC: Alternate Current
DC: Direct Current
I/O: Input/Output

MCU: Microcontroller Unit
PPTC: Polymeric Positive
Temperature Coefficient Device
Si / SiC: Silicon / Silicon Carbide

SeriesHigh-Current Fuse

881, MIDI 70V, Mega

Low-Current Fuse

438A, 437A

PPTC

RXEF, RKEFTVS DiodeTPSMB

Schottky Diode

DST

Thermal Protector

HCRTP-mini

Si / SiC MOSFET

Motor

Battery
Pack

Technology

4
5

MOSFET Module

X4 Class,
LSICMOxx
MTI200WX75GD/
MTI145WX100GD

Gate Driver

IXD_6xxSI, IX4340NE

Temperature Detection

setP™

NTC

Surface Mount, USUR1000

NTC

Leaded, Surface Mount

Hall Effect Sensor

55100

TVS Diode Array

AQ24CANA

Littelfuse, Inc. © 2022

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Click on the product series inthe table below for more info

Benefits of recommended Littelfuse productsTechnology

1

2

3

4
5

Function in application

Product series

Benefits

Provides safety protection in low- and medium881, MIDI 70V, Mega
voltage environments; full-range fuses

Features
Bolt down and SMD form factors; high breaking
capacity; meets ISO 8820 / new AEC

High-Current Fuse

Protects from short circuits andoverloaded circuits

Low-Current Fuse

Protects auxiliary power supply parts fromhigh fault currents due to external shorts

438A, 437A

Excellent temperature stability; compact design

Meets new AEC-Q specification;
fast response to fault current; surface mount device

PPTC

Provides resettable overload
circuit protection

RXEF, RKEF

Resets to normal operation after fault is cleared;
saves space due to small footprint

Maximum electrical rating: 60 VDC; operating
current up to 15 A; SMD and leaded options

TVS Diode

Suppresses voltage spikes

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

Schottky Diode

Provides rectification and reverse polarity
protection in power supply units

Thermal Protector

Provides over-temperaturethermal protection

HCRTP-mini

Disconnects the circuit from the supply in the eventof overheating

Surface mount; can be installed during reflow
process; 16 V rated; can break up to 500 A

Si / SiC MOSFET

Enables high switching speed in power
supply units

X4 Class,
LSICMOxx

Fast response time and low heat signature

Low Rds (on), dv/dt ruggedness

MOSFET
ModuleEnables high switching speed in power
supply units

MTI200WX75GD/
MTI145WX100GD

Fast response time and lower heat signature

Gate Driver

Controls switching MOSFETs

DST

Enables the design of high-efficiency power supplies Ultra-low forward voltage drop; high-frequency
with Trench MOS technology
operation; small TO-277B package

Dual outputs provide space-efficient design, high
IXD_6xxSI, IX4340NE
immunity to latch-up; rise/fall times < 10 ns
Auto resets after over-temperature condition isremoved; compatible to compact design

Digital Temperature
Indicator

Protects motor circuit from overheating

setP™

NTC

Measures semiconductor temperature

Surface Mount,
USUR1000

Allows for high-precision temperature
measurement in harsher environments

NTC

Measures semiconductor temperature

Leaded,Surface Mount

Allows for high-precision temperature
measurement in harsher environments

Low Rds (on), dv/dt ruggedness
Tight tolerance; small form factor;
fast thermal response
Resettable; low resistance; compact 0805 outline
UL recognized with ring lug mounting;
SMD NTCs in hermetically sealed MELF
package suitable for operation up to 220 °C

Hall Effect Sensor

Measures speed of the motor and position
detects of the rotor

55100

Available in two- or three-wire versions; miniature
flange mount design; wide sensitivity range

Up to 10 kHz switching speed; unaffected by harshenvironments; up to 20 B operations

TVS Diode Array

Protects sensitive electronic ICs from ESD,
EFT, and voltage spikes

AQ24CANA

Ensures reliability of the equipment without
performance degradation of communication lines

AEC-Q101 qualified; low leakage current andclamping voltage

Littelfuse, Inc. © 2022

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Click the product series in thetable below for more info

On-board charger
AC
mains

1
Input
protection
rectifierand filter

2

3
Highfrequency
converterand clamp

Powerfactorcontrol

4
Step-downtransformer

Outputrectificationand filter

5
Output DC
protection

Battery
packTechnology

SeriesAC Fuse10EV**, 526

Thyristor

HS4040xAQx, S8016xA

MOV,
SIDACtor®

AUMOV,
P3800FNL

Si / SiC MOSFET

X2 Class,
LSICMOxx

TVS Diode

TPSMB

Si / SiC MOSFET

X2 Class,
LSICMOxx

TVS Diode

TPSMB

4

Si / SiC DiodeDPG /LSIC2SDxx

5

DC Fuse10EV**, 525

6

TVS Diode Array

AQ24CANA7TVS Diode

SLD8S, SLD6S, SLD5S

1

2
Signal
line

DC
input

6
I/O
communicationinterface

Feedbackand PWM
oscillator

3

MCU

7
Input protection
and filter

RelaysLegend:Power
Data
Acronyms:* Recommended for three-wheeler vehicles** Contact Littelfuse sales

PWM: Pulse Width Modulation
GDT: Gas Discharge Tube
Littelfuse, Inc. © 2022

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Click on the product series inthe table below for more info

Benefits of recommended Littelfuse productsTechnology

Function in application

Product series

Benefits

Features

10EV**, 526

Provides safety protection in low- and mediumvoltage environments; full-range fuses

Bolt down and SMD form factors; high breaking
capacity; meets ISO 8820/new AEC qualifications

HS4040xAQx,
S8016xA

Solid-state switching with no audible noise during
operation; enables power-efficient operation;compact design

High voltage withstand capability (800 V); highsurge capability up to 225 A; solid-state switchingeliminates contact bounce

AC FuseProtects against short circuits andoverloaded circuits

Thyristor

Rectifies AC-DC

MOV,
SIDACtor®

Suppresses voltage spikes

AUMOV,
P3800FNL

Ensures the reliable performance of the circuitry;
Wide range of surge current ratings, disk sizes, andwhen paired together, offers lower clamping voltage lead options

Enables high switching speed in power
supply units

X2 Class,
LSICMOxx

Reduces switching and conduction losses;
increases efficiency

Low Rds(on), dv/dt ruggedness

Suppresses voltage spikes

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

Enables high switching speed in power
supply units; uses SiC for speed andefficiency

X2 Class,
LSICMOxx

Reduces switching and conduction losses;
increases efficiency

Low Rds(on), dv/dt ruggednessTVS Diode

Suppresses voltage spikes

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

4

Si / SiC Diode

Provides high-frequency switching andrectification

DPG /LSIC2SDxx

Reduces switching losses; increases efficiency

High surge capability; negligible IRR; junction
temperature of Tj 175 °C

5

DC FuseProtects against short circuits andoverloaded circuits

10EV**, 525

Provides safety protection in low- and mediumvoltage environments; full-range fuses

Bolt down and SMD form factors; high breaking
capacity; meets ISO 8820/new AEC qualifications

6

TVS Diode Array

Protects sensitive electronic ICs from ESD,
EFT, and voltage spikes

AQ24CANA

Ensures reliability of the equipment without
performance degradation of communication lines

AEC-Q101 qualified; low leakage current andclamping voltage

7

TVS Diode

SLD8S, SLD6S,
SLD5S

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

1

2

3

Si / SiC MOSFETTVS Diode
Si / SiC MOSFET

Suppresses voltage spikes

Littelfuse, Inc. © 2022

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E

Click the product series in thetable below for more info

Safety and Comfort Unit
4

3

Handle grip
control

Lighting

1
Power
distribution
unit

1

2
DC-DC
controller

Batterypack2

Safety unit

3
USB
charging
port

1

4

2
Instrument
cluster

I/O
communicationinterface

Side stand3

Comfort unit
* Recommended for three-wheeler vehicles** Littelfuse also offers custom power distribution modules*** K12S series recommended for high-end electric motorcycles

4

Technology

Series

Fuse

Jcase, MINIMIDI Bolt-Down*, MEGA*,
LP Jcase*, LP MINI*,ATO*

Fuse Box and Fuse
Holder** (12–24 V)

MIDI 498, MIDI Flex,
HWB, POWR-BLOK

Fuse Box and Fuse
Holder** (12–70 V)

J Case-FHJ
MEGA-298, MEGA-Flex,
SN, MDB5*, CF8-799*

TVS Diode

TPSMB

Temperature Indicator

setP™

NTC

Surface Mount

TVS Diode

TPSMB

MOV

AUML

C&K Tactile Switch &Keyswitch

K12S***, KSC, RKX

Technology

SeriesTemperature Indicator

setP™

PPTC

ASMD, miniASMDC

PPTCminiASMDC

Fuse

438A, 437A

3

TVS Diode Array

AQ24CANA

4

Reed Switch

MDSR-101
2

Littelfuse, Inc. © 2022

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Click on the product series inthe table below for more info

Benefits of recommended Littelfuse products
Safety Unit
Technology

1

2

3

Product series

Benefits

Features

Fuse

Protects against short circuits andoverloaded circuits

Jcase, MINIMIDI Bolt-Down*,
MEGA*,LP Jcase*, LP
MINI*,ATO*

Fuse Box andFuse Holder(12–24 V)

Protects against short circuits andoverloaded circuits

MIDI 498, MIDI
Flex, HWB, POWRBLOK

Provides safety protection in low- and mediumvoltage environments; full-range fuses

Bolt down and bladed form factors; high breaking
capacity; meets ISO 8820 standard

Fuse Box andFuse Holder(12–70 V)

Protects against short circuits andoverloaded circuits

J Case-FHJ
MEGA-298, MEGAFlex, SN, MDB5*,
CF8-799*

Provides safety protection in low- andmedium-voltage environments; full-range fuses

Bolt down and bladed form factors; high breaking
capacity; meets ISO 8820 standard

TVS Diode

Suppresses voltage spikes

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

Temperature
Indicator

Protects lighting circuit from overheatingof LEDs

setP™

Auto resets after over-temperature condition isremoved; compatible to compact design

Resettable; low resistance; compact 0805 outline

NTC

Measures semiconductor temperature

Surface Mount

Allows for high-precision temperature
measurement in harsher environments

SMD NTCs is in hermetically sealed MELF
package suitable for operation up to 220 °C

TVS Diode
MOV

4

Function in application

Provides safety protection in low- and mediumvoltage environments; full-range fuses

Bolt down and bladed form factors; high breaking
capacity; meets ISO 8820 standard

Suppresses voltage spikes

TPSMB

Excellent clamping capability; meets automotive
industry standards; fast response time

AEC-Q101 qualified; meets IEC standards for ESD
protection and ISO for in-vehicle voltage spikes

Suppression of transient voltage

AUML

Clamps transient surge to ensure the reliable
performance of the circuitry

Wide range of surge current ratings,
disk sizes, and lead options

Abuse-proof design; long lifecycles; robust design,and saves board space

Multiple contact configurations (SPST, DPST,
N0/NC); IP67; small form factor; illumination option

C&K Tactile Switch &Handle grip control
Keyswitch

K12S***, KSC, RKX

Littelfuse, Inc. © 2022

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E

Click the product series in thetable below for more info

Benefits of recommended Littelfuse products
Comfort Unit
Technology

Function in application

Product series

Benefits

Features

Temperature
Indicator

Protects USB C plugs and receptacles fromoverheating

setP™

Auto-resets after over-temperature condition isremoved; compatible to compact design

Resettable; low resistance; compact 0805 outline

1
PPTC

Provides resettable overload circuit
protection

ASMD,
miniASMDC

Resets to normal operation after fault is cleared;
saves space due to small footprint

Maximum electrical rating: 60 VDC; operating
current up to 15 A; SMD and leaded options

PPTC

Provides resettable overload circuit
protection

miniASMDC

Resets to normal operation after fault is cleared;
saves space due to small footprint

Maximum electrical rating: 60 VDC; operating
current up to 15 A; SMD and leaded options

Fuse

Protects against short circuits andoverloaded circuits

438A, 437A

Excellent temperature stability and performancereliability; compact design; ceramic substrateensures compatibility with high-temperatureenvironment

Meets new AEC-Q specification; fast response tofault current; surface mount device

2

3

TVS Diode Array

Protects sensitive electronic ICs from ESD,
EFT, and voltage transients

AQ24CANA

Ensures reliability of the equipment without
performance degradation of communication lines

AEC-Q101 qualified; meets ESD protection levels
specified under IEC 61000-4-2 and ISO 10605;
low leakage current and clamping voltage

4

Reed Switch

Provides control signal for the side stand

MDSR-10

Contamination resistant; compact design

Switches up to 200 Vdc or 0.5 A at up to 10 W;
1012 Ω insulation resistance

Littelfuse, Inc. © 2022

15

Safety standards forelectric two-wheelers and three-wheelers
Standard
UL 2849
IEC 62133-2 andUL 62133-2
UL 1642

Title

General scope

RegionOutline of Investigation for Electric Bicycles, Electrically Power
Assisted Cycles (EPAC Bicycles), Electric Scooters, and Electric
Motorcycles

Standard covers the on-board electrical system, and vehicle systems (including thechargers and batteries) of eBikes, electric scooters, and electric motorcycles.

North America

Safety standards for Li-ion Secondary Cells and Batteries

IEC 62133-2:2017 specifies requirements and tests for the safe operation of portablesealed secondary Lithium cells and batteries containing non-acid electrolytes, underintended use and reasonably foreseeable misuse.

GlobalNorth America

Lithium Batteries
Both safety standards deal with cells and small portable batteries. UL1642 deals withindividual cells, while UL2054 is for small rechargeable battery packs.

UL 2054

Household and Commercial Batteries

IEC 62281

This standard specifies test methods and requirements for primary and secondary
Safety of Primary and Secondary Lithium Cells and Batteries During(rechargeable) Lithium cells and batteries to ensure their safety during transport other thanTransport
for recycling or disposal.

JIS C8714

Safety Tests for Portable Li-Ion Secondary Cells and Batteries

Covers safety testing of Li-ion storage batteries (single cell and multiple cell) for portableelectronic devices.

Portable Rechargeable Cells and Batteries

Defines safety standards for portable cells and batteries. It is specific to two distinct
chemistry systems: Li-ion and nickel.

UN 38.3

Recommendations on Transportation of Dangerous Goods(Li-Ion Batteries)

This standard applies to batteries transported either on their own or installed in a device(UN codes 3090/3091 for Lithium, 3480/3481 for Li-ion).

GlobalBATSO 01

Manual for Evaluation of Energy Systems for Light Electric Vehicle(LEV) Secondary Lithium BatteriesSpecifies test methods for secondary Lithium batteries for safe use in light EVs.
Transport safety tests are also specified.

GlobalANSI C18.2M

North America

GlobalJapan

North America

Littelfuse, Inc. © 2022

16

Additional information can be found on Littelfuse.com
Explore the world of Littelfuse with the electronics eCatalogs (electronicscatalogs.littelfuse.com)

HVDC Contactor Relays
Selection Guide

Circuit Protection
Selection Guide

Sensing Products
Selection Guide

Integrated Circuits
Selection Guide

Power Semiconductor
Catalog

Click onimages for
more
information

Integrated Circuits
Product Catalog

C&K Transportation
Flyer

Two-/Three-Wheeler
Charging Solutions
Littelfuse, Inc. © 2022

17

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LegendSales
R&D
Manufacturing

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18

Partner for tomorrow’s electronic systems
Broad
Product Portfolio

Compliance andRegulatory Expertise

An industrial technology manufacturing
company empowering a sustainable,
connected, and safer world

We help customers in the design
process to account for requirements
set by global regulatory authorities

Application
Expertise

Testing
Capabilities

Our engineers partner directly withcustomers to help speed up productdesign and meet their unique needs

We help customers get products tomarket faster, we offer certification
testing to global regulatory standards

GlobalCustomer Service

GlobalManufacturing

Our global customer service team iswith you to anticipate your needs andensure a seamless experience

We provide high-volume
manufacturing that is committed tothe highest quality standards

Littelfuse, Inc. © 2022

19

Internal Combustion
Engine Solutions

Capacitive Discharge Ignition (CDI)
Current and older ignition system design
I

Current
regulator

MCU

I

II

+
Vp
_

_

Click the product series in thetable below for more info

Technology

SeriesI

Fuse

440A, 441A

II

SCR

S6004DS2RP,
S6008DS2RP,
MCR12DSMT4G

Vs+

SourceLittelfuse, Inc. © 2022

21

Electronic Fuel Injection (EFI)
Newer, more fuel efficient, and less polluting
I

Voltageregulator

+
Vp
_

_
Vs
+

Source

II

+
_
III

ECU

Click the product series in thetable below for more info

Technology

SeriesI

Fuse

440A, 441A

II

PPTC

ASMDC, miniASMDC

III

TVS Diode

TPSMB

Monitor

MCU

Sensors

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22

Rectifier and regulator (2 W and 3 W)
converts AC to DC for electrical systems
I
I

Control
unit

Click the product series in thetable below for more info

Technology

SeriesSCR (x6)

SJxx25xxA, SJxx20xx,
SVxx25xx, SVxx20xx

+
_

Red
Yellow

R/R module

Rectifier/regulator bridge+ Filter+ SCR control circuitBlueI

AC generator
An example of 18-pole,
Three-phase output
18-pole generator at 6000 rpm that
produces 900 Hz of AC output(f = RPM/120 x number of poles)

Littelfuse, Inc. © 2022

23

This document is provided by Littelfuse, Inc. (“Littelfuse”) for informational and guideline purposes only. Littelfuse assumes no liability for errors or omissions in this document orfor any of the information contained herein. Information is provided on an “as is” and “with all faults” basis for evaluation purposes only. Applications described are for illustrative
purposes only, and Littelfuse makes no representation that such applications will be suitable for the customer’s specific use without further testing or modification. Littelfuse
expressly disclaims all warranties, whether express, implied or statutory, including but not limited to the implied warranties of merchantability and fitness for a particular purpose,and non-infringement. It is the customer’s sole responsibility to determine suitability for a particular system or use based on their own performance criteria, conditions, specificapplication, compatibility with other parts, and environmental conditions. Customers must independently provide appropriate design and operating safeguards to minimize anyrisks associated with their applications and products. Read complete Disclaimer Notice at littelfuse.com/disclaimer-electronics.

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