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Our legacy and our future

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Littelfuse Is the Preferred Brand for Circuit Protection Products

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The #1 Brand In Circuit Protection --

The Largest Portfolio Of Solutions

Electrical

Automotive

Littelfuse has the broadest and deepest portfolio of circuit protection products serving three major market segments…

Electronics

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Electronics Business UnitLittelfuse Solutions for Today’s Advanced Products

MLVs

TVS Diode Arrays

PulseGuard® ESD Suppressors

Surface Mount Fuses

Resettable PTCs

MLVs

MOVs

TVS Diode Arrays

TVS Diodes

PulseGuard ® ESD Suppressors

Fuses – leaded/cartridge

Surface Mount Fuses

Resettable PTCs

MLVs

MOVs

Fuses – leaded/cartridge

Power Thyristors

Handheld Digital Consumer Telecom General Electronics

SIDACtor® & Battrax® Protection Thyristors

Greentube™ Gas Plasma Arresters

Telelink ® Fuses

DC Power Fuses

Fuses – leaded/cartridge

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Safety (Airbags, Battery Disconnect, Anti-rollover, Stability Control, etc.)PTCs, MOVs, MLVs, TVS Diodes

Automotive Business Unit

• Today’s automobiles include more electronic systems than ever before. Littelfuse's automotive solutions protect these systems from a wide range of potential overcurrent and transient voltage hazards.

Hybrid Vehicles (Gas Electric, Fuel-cell Electric, Li-Ion Polymer, etc.)EV Fuses

Automotive OEMs Around the World Rely on Solutions from Littelfuse

Comfort and Infotainment (Ride Control, Climate Control, Navigation Systems, Seating Controls, etc.)PTCs, MOVs, MLVs, TVS Diodes, PulseGuard® ESD

Suppressors, Electronic Fuses, GDTsPerformance and Emissions(Engine Management, Adaptable Suspension, Advanced Power-trains)PTCs, MOVs, MLVs, TVS Diodes, TVS Thyristors, Fuses

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Electrical Business Unit

Service Entrance SwitchesKLPC Class L Fuses• Overload protection • Short-circuit protection

Conveyor Motor CircuitsLLSRK_ID Class RK1 Fuses• Overload protection • Short-circuit

protection

Compressor Motor CircuitsJTD_ID Class J Fuses• Overload protection • Short-circuit protection

Conveyor Control CircuitsCCMR Class CC Fuses• Overload protection • Short-circuit protection

As industrial equipment becomes more sophisticated, so does the need for circuit protection.

Protecting Critical Business Assets

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We offer protection against all common threats to electric circuits and components

Every product that uses electrical energy needs circuit protection to ensure safety, reliability and performance…

Littelfuse has the solution

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Littelfuse - The only company to offer a completerange of circuit protection technologies

No competitor can match Littelfuse’s broad product offering and technical expertise in circuit protection applications...

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Our Customers Are Global Market Leaders

LEADING OEMs EMERGING OEMs EMS/ODM TIER 1 AUTO

VESTEL

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Littelfuse Continues to Build a StrongWorldwide Presence

Littelfuse has leading market positions in all three regions of the world

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Littelfuse Has Broad End-Market Exposure

CONSUMER• Hand-held devices • Entertainment • Computers

INDUSTRIAL • Factory Automation• Lighting applications• White goods

TELECOM• VOIP• LAN / WAN • Telco Central Office

AUTOMOTIVE• OEM / Aftermarket• Off-road, truck & bus• Automotive electronics

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Overview of Littelfuse circuit protection technologies

Overvoltage Technologies TVS Diodes Varistors SIDACtor Devices Gas Plasma Arrestors (GDTs) Silicon Protection Arrays (SPAs) PulseGuard ESD Suppressors

Overcurrent Technologies Positive Temperature Coefficient Devices (PTCs) Fuses

Switching Technologies Switching Thyristors

Services Application Testing Services

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Where Used:Protect equipment from current overloads or short circuits by completely stopping the flow of dangerous current – Littelfuse offers the broadest selection to serve the widest range of applications

Available Range:

Options from .062A – 100kA and up to 1000V

CartridgeAxial LeadedSurface Mount Nano and Thin FilmAutomotive Blade Fuses

FusesBroadest selection of any company

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Where Used:String protection, Re-combinersInverter DC Input protectionIEC60269-6, UL2579 coming soon

Available Range:Options from 1A up to 30A @ 1000VBreaking capacity 20.000ALeaded version available forPCB mounting

POWR-GARDSPF Solar Rated Fuse

Central Inverter Protectionusing LittelfuseClass L/J fuses

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Increase Safety and Protect Expensive Equipment from Damage, Reduce Downtime

Our comprehensive line of microprocessor-based protection relays safeguard equipment and personnel to prevent expensive damage, downtime or injury due to electrical faults. We offer:

- Ground Fault Relays - Motor Protection Relays - Feeder Protection Relays - Supplemental Monitors

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Polyfuse® PTCsResettable fuse alternative

Where Used:When maximum uptime is desired or fuse replacement difficult – PTCs restrict flow of dangerous current while allowing safe currents to continue equipment operation

Available Range:SMD - 0603, 0805, 1206, 1210, 1812, 2016, 2920Radial Leaded - 6V, 16V, 30V, 60V, 72VTelecom - 250V, 600VBattery Strap

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TVS DiodesProtect semiconductors from transient volts

Where Used:TVS Diodes respond to overvoltage events faster than most other types of circuit protection – Ideal for consumer electronics, industrial and telecom applications

Available Range:400 W to 30,000 W SMT and Axial6.8V to 550V Uni-directional and bi-directional products available6 kA, 10 kA, 15KA high surge capability device

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Where Used:Silicon Protection Arrays (SPAs), commonly called Diode Arrays, are a family of discrete diodes and diode arrays designed to protect sensitive electronic equipment against destructive electrostatic discharges (ESD) and other electrical transients.

Available Range:• Number of Channels: 1, 2, 3, 4, 5, 6, 8,

14 • Standoff Voltage: 2.5V - 30V• ESD (IEC61000-4-2, Contact): 4kV - 30kV• Capacitance (@ 0V Bias): 0.4pF - 50pF• Lightning (IEC61000-4-5, tP=8/20µs): 1A - 150A

• EFT (IEC61000-4-4, tP=5/50ns): ≥ 40A

Silicon Protection ArraysTM

Best-in-class clamping performance for ESD, EFT, and Lightning-Induced Transients

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Where Used:Thyristors are solid state switches used to control the flow of current

• Capable of blocking rated voltage until triggered to the on-state• Typically used in water heaters, gas ignitors, and a wide variety of electrical controls

Available Range:SCR Silicon Controlled Rectifier (Standard and Sensitive Gate types)

Triac (Standard, High Commutating Alternistor, High Temperature, and QUADRAC types)

SIDAC (Standard, High Energy, MultipulseTM, and Unidirectional types)• 0.8A to 70ARMS continuous current ratings

• Up to 1000VRMS blocking voltage ratings

• TO-220, TO-218, DPAK, TO-92, SOT223, and a variety of other THT and SMT packages

Switching Thyristors Solid state switches to control the flow of current

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Protection ThyristorsSIDACtor® protectors for Telecom and Datacom

Where Used:Protect telecom equipment and ADSL2+, VDSL2+, Ethernet, SLIC, VOIP and POTS applications from high voltage surges

Available Range:Leaded Devices: DO-15, TO-92, TO220 and CELLSurface Mount: DO-214, 3L DO-214 Compak, MS-013 6-pin, MS-012 (SO-8) , 3x3 ,3.3X3.3 and 5x6 QFN

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Varistors - MOVsHigh energy protectors from power spikes/lightning

Where Used:Protect sensitive equipment from power spikes or lightning strikes by shunting the energy to ground – typically used in industrial applications

Available Range:Radial Leaded (LA, ZA, UltraMOV, CIII)

Axial Leaded (MA)

Bare Disk

Surface Mount (CH, SM7, SM20)

Industrial (BA/BB, DA/DB, HA/HB)

Thermal MOV (TMOV)

Newly Released

SM7

SM20

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Varistors - MLVsSmall surface mount varistors for ESD suppression

– Cell phones– PDAs– Automotive

Applications– Digital communication– MP3 players– Computers– Peripherals– Industrial Controls

Where Used:Suppress ESD and other transients that occur on power supply, signal, and control lines – Computers, Mobile Communications, Handheld Electronics, I/O Ports, Alarm & Control Systems, Automotive Electronics and Industrial Automation.

Available Range:ML - Standard Series also available in 0201 package

MHS - High Speed (Lowest Capacitance)

MLE - ESD Suppression and Filtering

AUML - Automotive Transients

MLN - SurgeArray Series(4 Line Device)

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Gas Plasma Arrestors (GDTs)Suppress network damage through a contained gas

Where Used:Suppress damaging voltage transients including lighting in a contained plasma gas – ideal for broadband, ADSL, XDSL, CATV, Satellite and other network and communication equipment

Available Range:Form: Surface Mount, Cartridge, Radial and Axial LeadedElectrode: 2 and 3 terminals/electrodesVoltage Range: 90V-5000V

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PulseGuard ESD SuppressorsProtect integrated circuits from static discharge

Where Used:Supplement on-chip protection of IC’s; to increase the reliability of the end product -- used in low voltage (up to 24VDC) applications to protect the data/signal/control lines against user-generated ESD

Available Range:- Single and Multiple Line Suppressors- 0402, 0603 and SOT23 package types

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Why circuit protection?

Protecting End Users– Reducing or eliminating risk of injury

Protecting Products from Damage– Reduce risk of spikes, electrostatic discharge (ESD),

lightning, misuse– Increased product reliability and lower warranty repair costs

Compliance with Standards– Achieve safety standards acceptance

Safety, Reliability and Compliance

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One Stop Shopping- Littelfuse Advantage

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Why Littelfuse?

#1 circuit protection brand in the world Complete range of circuit protection technologies Product and application expertise Increased market acceptance and reduced liability Available globally Global application testing capabilities Technology leader