Small appliances
Appliances (APL)1

Small appliances: continued evolution with more
electronic content, more sensors, and battery powered
Food preparation

Improving quality of life

Hum idifier
Blender

Electric cooker
Air-purifier

Coffee Machine
Food processor

Portable vacuum cleaner

Microwave oven

Robotic appliances
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Market trends of small appliances
Market trends and drivers

Small appliance shipments (2019-2023)
Small appliances shipments (2019-2023)

Small appliances include smart kitchen appliances (coffeemachine, e-cooker, etc.), robotic appliances and others

Global small appliances shipments in 2019 ~3.3B units withgrowth expected at CAGR of ~1.4% from 2019-2023

Small kitchen appliance shipments comprise ~60% of global
small appliance market at ~2B units shipped annuallySource: Electrolux market overview (2018), Marketwatch (July 2019)

Small kitchen appliances shipments (2019-2023)

Global smart kitchen appliances volume (a subset of smallappliances) is growing rapidly at CAGR of 17.2% between
2019-2027
Consumers in developed countries are rapidly adoptingappliances with increased safety features such as safety
interlocks and sensors

Source: Small appliances report (Statista (August 2019 small appliance report)

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Component recommendations for coffee machine
Display

Motherboard⚫ TVS diode⚫ Fuse⚫ TVS diode array⚫ MOV⚫ TVS diode⚫ Schottky barrier rectifier diode⚫ TRIAC

Main motor/Pump⚫ TVS diode⚫ NTC (temperature)
Acronyms:
NTC: negative temperature co-efficient
MOV: metal oxide varistor
TVS: transient voltage suppressor

Compartments and doors⚫ Reed switch or sensor

ProtectControl

Sense

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Small appliance motherboard block diagram
1
ACMains

Input protection,
rectifier & filter

2High frequency
converter &clamp

Step-downtransformer

Fuse875, 215, 373

MOV

LA, C-III

2

TVS diode

P6KE, P6SMB

3

Schottky barrier
rectifier diode

MBR, DST

4

TRIAC

Qxx10Hx, QJxx16xHx

1

Outputprotection,
rectifier & filter

4

Legend:Power
DataSeries

3

To/fromfunctionalmodules

AC switching

TechnologyFeedback &PWM oscillator

MCUAcronyms:
MOV: metal oxide varistorTVS: transient voltage suppressor

Pump& boiler

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5Motherboard: components usage and benefits
Technology

Function in application

SeriesBenefits

Features

Fuse

Helps to protects equipment andusers from hazards due toovercurrent equipment faults

875, 215, 373

Reduces customer qualification time bycomplying w ith regulatory safety standards
such as UL/IEC

Compliant w ith UL/IEC standards, lowinternal resistance, shock safe, vibration
resistant

MOV

Helps protect pow er unit fromvoltage surges and lighting eventson AC lineLA, C-III

Reduces customer qualification time bycomplying w ith regulatory safety standards
such as UL/IEC

Can meet w ide set surge w ithstandspecifications: 40J – 530J (2mS)

2TVS diodeProtect pow er unit from w ide rangeof voltage transients

P6KE, P6SMBFast response time (<1pS)

600 W peak pulse capability; compatible
w ith high reflow temperature profile(260°C/40S)

3

Schottky barrier
rectifier diodeRectification and blocking in pow er
supply units

MBR, DST

Low heat generation (efficient) enables
compact designs, improves pow er supply
efficiency due to fast recovery time

Low forward voltage drop, high frequency
operation, high junction temperaturecapability

4TRIAC

AC sw itching and motor speed
control (pump & boiler)

Qxx10Hx,
QJxx16xHx

Solid-state (non-mechanical) switching andno audible noise during operation; enables
pow er efficient, compact design

High voltage w ithstand capability (1kA), highsurge capability up to 200A, solid-state
sw itching eliminates contact bounce

1Confidential and Proprietary | Littelfuse, Inc. © 2021

6Components for mechanical and display subsystems
Mechanical sub-systems:
1

Poddetection

Lid position

Motherboard
output1

Water
reservoir filllevel

Carafedetection

Motherboard MCU

TechnologySeries

Reed sw itch

59045, 59165

Reed sensor

59140, 59141

Magnetic actuator

57045, H-31,57140

TechnologySeries

TVS diodeSMF, SMF4L

TVS diode array

SP3423, SP1064,
SP1002

Display:
Motherboard
Output1
Backlight
LED driver

Legend:Power
Data

LED/LCD
Display1
Motherboard MCU

Acronyms:
TVS: transient voltage suppressor
MCU: microcontroller Unit

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7Mechanical and displays components usage
Mechanical sub-systems:
Technology1

Function in Application

SeriesProvides open/close control signalof functional blocks to protect fromphysical harm or equipment
damage59045, 59140, H-31

Function in Application

SeriesBenefits

TVS diode

Helps protect equipment from user
induced ESD on pow er line

SMF, SMF4L

Small form-factor enables compact design,
improves reliability by protecting systemfrom transients on pow er lines

400W peak pulse pow er capability, fast
response time (<1nS), low inductanceTVS diode array

Helps protect equipment from user
induced ESD on signal line

SP3423, SP1064,
SP1002

Smaller form-factor and multi-line
protection enables compact designs

Low leakage current, low capacitance per
I/O

Reed Sw itch orreed sensor

Benefits
Hermetically sealed, suitable for humid,
w et or contaminated environments

Features
Application-specific customization available,
w ide range of sensitivity’s available

Display:
Technology

1

Features

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8Pump, heater, and small motor block diagram
1

Control board DC output
Control board AC output
Control board MCU

Control board AC output

PowerBridge2GateDriver

BoilerDCmotor(Pump)

Control board MCU

Technology

Legend:Power
DataMCUSeries

BenefitsFeatures
Capable of sourcing and sinking up to 2A,
w ide operating voltage range, 3750Vrm
input-output isolation

Gate Driver

Provides required drive current to pow er
MOSFETSIX3120, IX3180

NTC

Temperature measurement of pow er
MOSFETs (during normal operation &detecting fault conditions)

RA, RB, MM

SMD form-factor allow s for compact design;
Surface mountable; fast thermal response
non-standards resistance values available

NTC

Measuring w ater temperature

H6246 series

Can meet w ide range of customer-specificCustomized probes and assemblies to meet
application requirement, various precisionindividual customer requirements
levels available

1

2

Function in Application

BLDC
motor
(ex. milkfroth)

Efficient fast MOSFET sw itching

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Components for rice cooker & table-top appliances
Display:Compartment and doors:⚫ TVS diode⚫ Reed Sensor⚫ TVS diode array⚫ NTC (temperature)

Motherboard:⚫ Fuse⚫ MOV⚫ Schottky barrier rectifier diode⚫ TRIAC

Acronyms:
NTC: negative temperature co-efficient
MOV: metal oxide varistor
TVS: transient voltage suppressor

ProtectControl

Sense

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10Motherboard component recommendations
1AC
Mains

Input protection,
Rectifier & Filter

2Power Switch

Step-downtransformer

Outputprotection,
Rectifier & Filter

To/fromfunctional
modules3
Legend:PowerDataTechnology

AC Switching

MCU

To heater
plate
Function in Application

SeriesBenefits

Features

Fuse

Helps to protects equipment and users
from hazards due to overcurrentequipment faults

875, 215, 373

Reduces customer qualification time bycomplying w ith regulatory safety standards
such as UL/IEC

Compliant w ith UL/IEC standards, lowinternal resistance, shock safe, vibration
resistant

MOV

Helps protect pow er unit from voltage
surges and lighting events on AC line

LA, C-III

Reduces customer qualification time bycomplying w ith regulatory safety standards
such as UL/IEC

Can meet w ide set surge w ithstandspecifications: 40J – 530J (2mS)

12

Schottky barrier Rectification and blocking in pow er supply
rectifier diodeunits

MBR, DST

Low heat generation (efficient) enables
compact designs, improves pow er supply
efficiency due to fast recovery time

Low forward voltage drop, high frequency
operation, high junction temperaturecapability

3TRIAC

Qxx10Hx,
QJxx16xHx

Solid-state (non-mechanical) switching andno audible noise during operation; enables
pow er efficient, compact design

High voltage w ithstand capability (1kA), highsurge capability up to 200A, solid-state
sw itching eliminates contact bounce

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11Components for mechanical and display subsystems
Mechanical sub-systems:
12

Lid position

Heater
Plate

Motherboard
OutputMotherboard MCUTechnologySeries

Reed sensor

59140, 59141

Magnetic actuator

57140, 57141

NTC (leaded)

H6246 series

TechnologySeries

TVS diodeSMF, SMF4L

TVS diode array

SP3423, SP1064,
SP100212

Display:
Motherboard
Output1
Backlight
LED driver
Legend:PowerData

LED/LCD
Display1
Motherboard MCU

Acronyms:
NTC: negative temperature co-efficient
MLV: multilayer varistor
TVS: transient voltage suppressor

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12Mechanical and displays components usage
Mechanical sub-systems:
Technology

Function in Application

SeriesBenefitsFeatures

1Reed Sw itch orreed sensor

Provides open/close control signalof functional blocks to protect fromphysical harm or equipment
damage59045, 59140, H-31

Hermetically sealed, suitable for humid,
w et or contaminated environments

Application-specific customization available,
w ide range of sensitivity available

2NTC

Measuring operating temperature ofheater plate

H6246 series

Customized probes and assemblies tomeet individual customer requirements

Can meet w ide range of customer-specificapplication requirement, various precisionlevels available

Function in Application

SeriesBenefits
Improves system reliability by protecting
dow nstream components from transientson pow er lines

400W peak pulse pow er capability, fast
response time (<1nS), low inductance

Smaller form-factor and multi-line
protection enables ease of design

Low leakage current, low capacitance per
I/O

Display:
TechnologyTVS diodeProtect ICs from ESD induced
through Display

SMF, SMF4L

TVS diode array

Protect ICs from ESD induced on
signal line through Display

SP3423, SP1064,
SP1002

1Features

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13Safety and compliance standards
Industry standard

Sub-section requirement

IEC 60335-1 Household and Similar Electrical Appliances –14 Transient overvoltage
Safety – Part 1: General Requirements
andIEC 60335-2-15 Household and Similar ElectricalAppliances – Safety – Particular requirements for appliances
19.11.2 Abnormal operation
for heating liquids. (covers both coffee makers and ricecookers)

UL 1082
Household Electric Coffee Makers andBrew ing Type Appliances

TechnologyImplications on the systemMOVs

MOVs maybe used to meet the 1.2/50µs
impulse at the voltages listed in Table 6

Fuses

Fuses meeting the requirement of IEC60127 series may be relied upon to meetthe requirements of abnormal operation

6.3 Components shall comply w ith
Fuses
requirements of applicable UL
standard

All fuses are UL recognized to UL 248
series

22A.2 NTCs used as a protective
or operating control shall comply
w ith UL 60730-1 or UL 1434

PTCs and NTCs

Select Littelfuse NTCs are UL recognized
to their either UL 60730-1 or UL 1434

26B.1 Surge protective devices
shall comply w ith UL 1449

MOVs

All of Littelfuse applicable surge protective
components are UL recognized to UL 1449

47.5.4 Voltage surges inaccordance with IEC 61000-4-5

MOVs

MOVs w ill operate during test and reduce
likelihood of increased risk of fire or electricshock

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Safety and compliance standards
Industry standard

UL1026
Electric Household Cooking and Food Serving Appliances

Sub-section requirement

TechnologyImplications on system

5.3 Components shall comply w ithFuses
requirements of applicable ULstandard

All fuses are UL recognized to UL 248
series

18 General overcurrent protection Fuses

Product must have overcurrent protection
up to 20A

26.5 NTCs used as a protective orNTCs
operating control shall complyw ith UL 60730-1 or UL 1434

Majority of Littelfuse PTCs and select NTCs
are UL recognized to their either UL 607301 or UL 1434

30.3 Use of overvoltage device forMOVs
spacing

The use of UL 1449 recognized MOVs
allow s the reduction of spacings per
Clearance B of UL 480

35 Surge protective devices shallcomply w ith UL 1449

All of Littelfuse applicable surge protective
components are UL recognized to UL 1449

MOVs

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to open thecatalog

Integrated Circuits
Product Catalog

Additional information can be found on Littelfuse.com

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We help customers in the design
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Littelfuse.com
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 components, and environmental conditions. Customers must independently provide appropriate design and operating safeguards to minimize
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