Biggest changeThe Company performs the majority of its own fabrication and maintains in-house capabilities for metal stamping, surface mount assembly, plating (silver, nickel, zinc, and oxides) thermoplastic molding, and high-precision manufacturing, miniaturization and haptics. In addition, the Company fabricates semiconductor wafers for certain applications and maintains in-house capability for epitaxy fabrication, die attach, and wafer probe testing.
Biggest changeMANUFACTURING The Company’s manufacturing facilities are in China, France, Germany, India, Ireland, Italy, Japan, Lithuania, Mexico, Philippines, the U.K., the U.S., and Vietnam. The Company performs the majority of its own fabrication and maintains in-house capabilities for metal stamping, surface mount assembly, plating (silver, nickel, zinc, and oxides) thermoplastic molding, and high-precision manufacturing, miniaturization and haptics.
Industrial Segment The Company markets and sells its Industrial segment products direct to OEMs, and through both electrical and electronics distribution channels to various end customers including electrical contractors, factories, municipalities, and utilities. CUSTOMERS The Company directly sells to over 4,000 customers and distributors worldwide.
Industrial Segment The Company markets and sells its Industrial segment products direct to OEMs, and through both electrical and electronics distribution channels to various end customers including electrical contractors, factories, municipalities, and utilities. The Company directly sells to over 4,000 customers and distributors worldwide.
For segment and geographical information and consolidated net sales and operating income see Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations and Note 16, Segment Information, of the Notes to Consolidated Financial Statements included in this Annual Report. 3 Table of Contents • Electronics Segment : Consists of one of the broadest product offerings in the industry, including fuses and fuse accessories, positive temperature coefficient (“PTC”) resettable fuses, electromechanical switches and interconnect solutions, polymer electrostatic discharge (“ESD”) suppressors, varistors, reed switch based magnetic sensing, gas discharge tubes; semiconductor products such as discrete transient voltage suppressor (“TVS”) diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors (“MOSFETs”) and diodes, and insulated gate bipolar transistors (“IGBT”) technologies.
For segment and geographical information and consolidated net sales and operating income, see Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations and Note 16, Segment Information, of the Notes to Consolidated Financial Statements included in this Annual Report. • Electronics Segment : Consists of one of the broadest product offerings in the industry, including fuses and fuse accessories, positive temperature coefficient (“PTC”) resettable fuses, electromechanical switches and interconnect solutions, polymer electrostatic discharge (“ESD”) suppressors, varistors, reed switch based magnetic sensing, gas discharge tubes; semiconductor products such as discrete transient voltage suppressor (“TVS”) diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors (“MOSFETs”) and diodes, and insulated gate bipolar transistors (“IGBT”) technologies.
The Company expects to continue to expand its presence across its end markets, leveraging its growing customer base, and go-to-market strength, and by continuing to expand its product portfolio through organic and inorganic investments in high growth, niche applications.
The Company expects to continue to expand its presence across its end markets, leveraging its growing customer base, and go-to-market strength, and by continuing to expand its product portfolio through organic and inorganic investments in high growth applications.
Compensation, Benefits and Employee Wellness The Company provides compensation and benefits programs designed to be competitive and equitable to attract, retain and motivate highly qualified associates. The components of the Company's compensation program vary by region and job-type, and include items such as base salary, performance-based bonus plans, equity awards, paid time off, and tuition reimbursement.
Compensation, Benefits and Employee Wellness The Company provides compensation and benefits programs designed to be competitive and equitable to attract, retain and motivate highly qualified employees. The components of the Company's compensation program vary by region and job-type, and include items such as base salary, performance-based bonus plans, equity awards, paid time off, and tuition reimbursement.
As we continue to grow, we recognize the need to continuously evaluate our environment, health, and safety ("EHS") organization. In 2024, we continued to enhance our H&S program to meet our obligations to provide a safe and secure working environment for our employees. We are committed to meeting or exceeding EHS compliance requirements through internal and independent third-party audits.
As we continue to grow, we recognize the need to continuously evaluate our environment, health, and safety ("EHS") organization. In 2025, we continued to enhance our H&S program to meet our obligations to provide a safe and secure working environment for our employees. We are committed to meeting or exceeding EHS compliance requirements through internal and independent third-party audits.
The Company publishes an annual Sustainability Report to communicate our commitment, approach, and impact on each of our focus areas. The 2023 Sustainability Report was prepared in alignment with the GRI Standards – 2021, the Sustainability Accounting Standards Board (“SASB”), and outlines our governance, strategy, risk management, and metrics identified in the Task Force on Climate-Related Financial Disclosures (“TCFD”) recommendations.
The Company publishes an annual Sustainability Report to communicate our commitment, approach, and impact on each of our focus areas. The 2025 Sustainability Report was prepared in alignment with the GRI Standards – 2021, the Sustainability Accounting Standards Board (“SASB”), and outlines our governance, strategy, risk management, and metrics identified in the Task Force on Climate-Related Financial Disclosures (“TCFD”) recommendations.
The leadership development programs include a mix of internal and external programs and partnerships addressing fundamental leadership skills to engage, motivate and develop our talent at all stages of their leadership journey. As an industrial technology manufacturing company, we are committed to building a high performing team with the skill sets, qualifications and diverse background.
The leadership development programs include a mix of internal and external programs and partnerships addressing fundamental leadership skills to engage, motivate and develop our talent at all stages of their leadership journey. As an industrial technology manufacturing company, we are committed to building a high performing team with skill sets, qualifications and diverse backgrounds.
Headquartered in Galway, Ireland, Western Automation is a designer and manufacturer of electrical shock protection devices used across a broad range of high-growth end markets, including electric vehicle charging infrastructure, industrial safety, and renewables. 4 Table of Contents At the time the Company and Western Automation entered into the definitive agreement, Western Automation had annualized sales of approximately $25 million.
Headquartered in Galway, Ireland, Western Automation is a designer and manufacturer of electrical shock protection devices used across a broad range of high-growth end markets, including electric vehicle charging infrastructure, industrial safety, and renewables. At the time the Company and Western Automation entered into the definitive agreement, Western Automation had annualized sales of approximately $25 million.
The Company’s commercial vehicle business includes a variety of products including power distribution modules and units, low and high current switches, circuit breakers, relays, battery management products, ignition key switches, and trailer 6 Table of Contents connectors. These products are used in applications largely serving commercial vehicle end markets including heavy-duty truck, construction, agriculture, material handling and marine.
The Company’s commercial vehicle business includes a variety of products including power distribution modules and units, low and high current switches, circuit breakers, relays, battery management products, ignition key switches, and trailer connectors. These products are used in applications largely serving commercial vehicle end markets including heavy-duty truck, construction, agriculture, material handling and marine.
Founded in 2005, Embed is a proven provider of embedded software and firmware developed for a broad range of applications serving transportation end markets, primarily including commercial vehicle electronification and eMobility. The business is included in the commercial vehicle business within the Company's Transportation segment. The acquisition was funded with the Company’s cash on hand.
Founded in 2005, Embed is a proven provider of embedded software and firmware developed for a broad range of applications serving transportation end markets, primarily including commercial vehicle electronification and eMobility. The business is included in the 5 Table of Contents commercial vehicle business within the Company's Transportation segment. The acquisition was funded with the Company’s cash on hand.
During fiscal 2024, 2023, and 2022, net sales to customers outside the U.S. accounted for approximately 63%, 65%, and 64%, respectively, of the Company’s total net sales. CYBERSECURITY The cybersecurity and data protection program at Littelfuse is based on foundational principles outlined in applicable industry and internationally accepted-cybersecurity frameworks.
During fiscal 2025, 2024, and 2023, net sales to customers outside the U.S. accounted for approximately 65%, 63%, and 65%, respectively, of the Company’s total net sales. CYBERSECURITY The cybersecurity and data protection program at Littelfuse is based on foundational principles outlined in applicable industry and internationally accepted-cybersecurity frameworks.
The Chief Executive Officer ("CEO") and CHRO regularly update the Company's Board of Directors on human capital matters. 9 Table of Contents Our Values & Culture Littelfuse core values have been instrumental in driving success for our business.
The Chief Executive Officer ("CEO") and CHRO regularly update the Company's Board of Directors on human capital matters. Our Values & Culture Littelfuse core values have been instrumental in driving success for our business.
Globally, we offer comprehensive medical benefits and an employee assistance program that provides confidential 10 Table of Contents counseling and other wellbeing tools at no charge for all our employees and their families to receive support with personal, health, life, financial, or work issues.
Globally, we offer comprehensive medical benefits and an employee assistance program that provides confidential counseling and other wellbeing tools at no charge for all our employees and their families to receive support with personal, health, life, financial, or work issues.
The Company believes that it is currently in compliance in all material respects with applicable environmental laws and regulations. 11 Table of Contents Littelfuse GmbH, which was acquired by the Company in May 2004, is responsible for maintaining closed coal mines in Germany from legacy operations.
The Company believes that it is currently in compliance in all material respects with applicable environmental laws and regulations. Littelfuse GmbH, which was acquired by the Company in May 2004, is responsible for maintaining closed coal mines in Germany from legacy operations.
PRODUCT DESIGN AND DEVELOPMENT The Company employs scientific, engineering, and other personnel to continually improve its existing product lines and to develop new products at its research, product design, and development (“R&D”) and engineering facilities with primary locations in Canada, China, France, Germany, India, Ireland, Italy, Japan, Lithuania, Mexico, Philippines, Spain, Taiwan (China), United Kingdom ("U.K."), and the U.S.
PRODUCT DESIGN AND DEVELOPMENT The Company employs scientific, engineering, and other personnel to continually improve its existing product lines and to develop new products at its R&D and engineering facilities with primary locations in Canada, China, France, Germany, India, Ireland, Italy, Japan, Lithuania, Mexico, Philippines, Spain, Taiwan (China), United Kingdom ("U.K."), and the U.S.
For the fiscal year 2024, approximately 63% of the Company’s net sales were to customers outside the United States (“U.S.”), including approximately 23% to China. The Company manufactures many of its products on fully integrated manufacturing and assembly equipment. The Company maintains product quality through a Global Quality Management System with most manufacturing sites certified under ISO 9001:2000.
For the fiscal year 2025, approximately 65% of the Company’s net sales were to customers outside the United States (“U.S.”), including approximately 24% to China. The Company manufactures many of its products on fully integrated manufacturing and assembly equipment. The Company maintains product quality through a Global Quality Management System with most manufacturing sites certified under ISO 9001:2000.
Sales to Arrow Electronics, Inc., which were reported in our Electronics, Transportation, and Industrial segments, were 9.4%, 11.2%, and 11.5% of consolidated net sales in 2024, 2023, and 2022, respectively. No other single customer accounted for more than 10% of net sales during any of the last 8 Table of Contents three years.
Sales to Arrow Electronics, Inc., which were reported in our Electronics, Transportation, and Industrial segments, were 9.5%, 9.4%, and 11.2% of consolidated net sales in 2025, 2024, and 2023, respectively. No other single customer accounted for more than 10% of net sales during any of the last three years.
Many of our products are incorporated into applications with complex design technical support requirements, while certain of our products require less design support for our customers. Most Electronics segment products are sold through our direct salesforce or through our channel distribution partners.
Electronics Segment Our Electronics segment products are used across a variety of applications. Many of our products are incorporated into applications with complex design technical support requirements, while certain of our products require less design support for our customers. Most Electronics segment products are sold through our direct salesforce or through our channel distribution partners.
The entire product development process usually ranges from a few months to a few years based on the complexity of development, with continuous efforts to reduce the development cycle. During fiscal years 2024, 2023, and 2022, the Company expended $107.8 million, $102.4 million, and $95.6 million, respectively, on R&D.
The entire product development process usually ranges from a few months to a few years based on the complexity of development, with continuous efforts to reduce the development cycle. During fiscal years 2025, 2024, and 2023, the Company expended $106.9 million, $107.8 million, and $102.4 million, respectively, on R&D.
The business is reported within the Company’s Industrial segment. The Company financed the transaction with cash on hand. • C&K Switches: On July 19, 2022, the Company acquired C&K Switches (“C&K”) for $540 million in cash.
The business is reported within the Company’s Industrial segment. The acquisition was funded with the Company’s cash on hand. • C&K Switches: On July 19, 2022, the Company acquired C&K Switches (“C&K”) for $540 million in cash.
ITEM 1. BUSINESS. GENERAL Littelfuse, Inc., was incorporated under the laws of the State of Delaware in 1991. References herein to the “Company,” “we,” “our” or “Littelfuse” refer to Littelfuse, Inc. and its subsidiaries. References herein to “2024”, “fiscal 2024” or “fiscal year 2024” refer to the fiscal year ended December 28, 2024.
ITEM 1. BUSINESS. GENERAL Littelfuse, Inc., was incorporated under the laws of the State of Delaware in 1991. References herein to the “Company,” “we,” “our” or “Littelfuse” refer to Littelfuse, Inc. and its subsidiaries. References herein to “2025”, “fiscal 2025” or “fiscal year 2025” refer to the fiscal year ended December 27, 2025.
This includes establishing and implementing global policies and programs for leadership and employee development, compensation, benefits, workforce planning, human resources systems, and ensuring effective and efficient internal company operations. The CHRO is responsible for developing and integrating the Company’s diversity, inclusion, and belonging strategy in its business operations.
This includes establishing and implementing global policies and programs for leadership and employee development, compensation, benefits, workforce planning, human resources systems, and ensuring effective and efficient internal company operations. The CHRO is responsible for developing and integrating the Company’s culture strategy across all business operations.
Employee Data On December 28, 2024, the Company had approximately 16,000 full-time, part-time, and temporary employees; of which 47%, 40% and 13% are located in the Americas, Asia-Pacific region, and Europe, respectively. Governance & Oversight The Chief Human Resources Officer ("CHRO") is responsible for developing and executing the Company’s human capital strategy.
Employee Data On December 27, 2025, the Company had approximately 17,000 full-time, part-time, and temporary employees; of which 45%, 42% and 13% are located in the Americas, Asia-Pacific region, and Europe, respectively. Governance & Oversight The Chief Human Resources Officer ("CHRO") is responsible for developing and executing the Company’s human capital strategy.
References herein to “2023”, “fiscal 2023” or “fiscal year 2023” refer to the fiscal year ended December 30, 2023. References herein to “2022”, “fiscal 2022” or “fiscal year 2022” refer to the fiscal year ended December 31, 2022. The Company operates on a 52-53 week fiscal year (4-4-5 basis) ending on the Saturday closest to December 31.
References herein to “2024”, “fiscal 2024” or “fiscal year 2024” refer to the fiscal year ended December 28, 2024. References herein to “2023”, “fiscal 2023” or “fiscal year 2023” refer to the fiscal year ended December 30, 2023. The Company operates on a 52-53 week fiscal year (4-4-5 basis) ending on the Saturday closest to December 31.
Net sales by segment for the periods indicated are as follows: Fiscal Year (in millions) 2024 2023 2022 Electronics $ 1,186.8 $ 1,350.4 $ 1,492.8 Transportation 672.4 678.3 716.2 Industrial 331.6 334.0 304.9 Total $ 2,190.8 $ 2,362.7 $ 2,513.9 The Company operates in three geographic regions: the Americas, Asia-Pacific, and Europe.
Net sales by segment for the periods indicated are as follows: Fiscal Year (in millions) 2025 2024 2023 Electronics $ 1,345.5 $ 1,186.8 $ 1,350.4 Transportation 676.4 672.4 678.3 Industrial 364.4 331.6 334.0 Total $ 2,386.3 $ 2,190.8 $ 2,362.7 The Company operates in three geographic regions: the Americas, Asia-Pacific, and Europe.
Net sales in the Company’s three geographic regions, based upon the shipped-to destination, are as follows: Fiscal Year (in millions) 2024 2023 2022 Americas $ 900.4 $ 901.5 $ 992.3 Asia-Pacific 824.7 898.9 1,019.9 Europe 465.7 562.3 501.7 Total $ 2,190.8 $ 2,362.7 $ 2,513.9 5 Table of Contents The Company’s products are sold worldwide through distributors, direct sales force, and manufacturers’ representatives in certain regions.
Net sales in the Company’s three geographic regions, based upon the shipped-to destination, are as follows: Fiscal Year (in millions) 2025 2024 2023 Americas 947.9 $ 900.4 $ 901.5 Asia-Pacific 906.5 824.7 898.9 Europe 531.9 465.7 562.3 Total $ 2,386.3 $ 2,190.8 $ 2,362.7 The Company’s products are sold worldwide through distributors, direct sales force, and manufacturers’ representatives in certain regions.
Commercial vehicle products include fuses, switches, circuit breakers, relays, and power distribution modules and units used in applications serving a number of end markets, including heavy-duty truck and bus, construction, agriculture, material handling and marine. • Industrial Segment: Consists of industrial circuit protection (industrial fuses), protective and monitoring relays (protection relays, residual current devices and monitors, ground fault circuit interrupters, solid state switches, and arc fault detection devices), and industrial controls and sensors (contactors, transformers, and temperature sensors) for use in various applications such as renewable energy and energy storage systems, industrial safety, factory automation, electric vehicle infrastructure, HVAC systems, non-residential construction, MRO, and mining.
Commercial vehicle products include fuses, switches, circuit breakers, relays, and power distribution modules and units used in applications serving a number of end markets, including heavy-duty truck and bus, off-road and recreational vehicles, material handling, agriculture equipment, construction equipment, and ship, marine and train. • Industrial Segment: Consists of industrial circuit protection (industrial fuses), protective and monitoring relays (protection relays, residual current devices and monitors, ground fault circuit interrupters, solid state switches, and arc fault detection devices), and industrial controls and sensors (contactors, transformers, and temperature sensors) for use in various applications such as data center – computing and communication, data center and communications infrastructure, industrial controls, building controls, grid and utility infrastructure, construction, renewable energy, HVAC, processing and extracting, and energy storage.
The 2023 acquisition of Western Automation expanded the Company's electrical shock protection devices portfolios, which primarily serves a broad range of high-growth end markets, and includes electric vehicle charging infrastructure, industrial safety and renewables.
The 2023 acquisition of Western Automation expanded the Company's electrical shock protection devices portfolios, which primarily serves a broad range of high-growth end markets, and includes electric vehicle charging infrastructure, industrial safety and renewables. and enhances our presence in mission-critical markets such as grid and utility infrastructure, power generation, and data centers.
Littelfuse strives to assess and update its cybersecurity program on a regular basis using an Information Security Management System ("ISMS") comprised of three main elements – 1) independent internationally recognized vendors and technologies for assessments and monitoring, 2) strong internal controls based on industry standards, and 3) Board and Senior Leadership governance and support.
Littelfuse strives to assess and update its cybersecurity program on a regular basis using an Information Security Management System ("ISMS") comprised of three main elements – 1) independent internationally recognized vendors and technologies for assessments and monitoring, 2) strong internal controls based on industry standards, and 3) Board and Senior Leadership governance and support. 9 Table of Contents COMPETITION The Company’s products compete with similar products of other manufacturers, some of which may have substantially greater financial resources than the Company.
Industrial Segment The Company designs and sells a broad range of industrial fuses, industrial controls (protection relays, contactors, transformers, residual current devices, ground fault circuit interrupters, residual current monitors, and arc fault detection devices) and temperature sensors for use in various applications such as renewable energy and energy storage systems, industrial safety, factory automation, electr ic vehicle infrastructure, HVAC systems, non-residential construction, MRO, and mining.
Industrial Segment The Company designs and sells a broad range of industrial fuses, industrial controls (protection relays, contactors, transformers, residual current devices, ground fault circuit interrupters, residual current monitors, and arc fault detection devices) and temperature sensors for use in various applications such as data center – computing and communication, data center and communications infrastructure, industrial controls, building controls, grid and utility infrastructure, construction, renewable energy, HVAC, processing and extracting, and energy storage.
The segment covers a broad range of end markets, including industrial motor drives and power conversion, automotive electronics, electric vehicle and related charging infrastructure, aerospace, power supplies, data centers and telecommunications, medical devices, alternative energy and energy storage, building and home automation, appliances, and mobile electronics. • Transportation Segment: Consists of a wide range of circuit protection, power control and sensing technologies for global original equipment manufacturers (“OEMs”), Tier-one suppliers and parts and aftermarket distributors in passenger vehicles, heavy-duty truck and bus, off-road and recreational vehicles, material handling equipment, agricultural machinery, construction equipment and other commercial vehicle end markets.
The segment covers a broad range of end markets, including data center – computing and communication, data center and communications infrastructure, industrial controls, building controls, aerospace and defense, appliances, consumer electronics solutions, healthcare solutions, industrial equipment, energy storage, diversified industrials, grid and utility infrastructure, renewable energy, passenger vehicles, and commercial vehicles. • Transportation Segment: Consists of a wide range of circuit protection, power control and sensing technologies for global original equipment manufacturers (“OEMs”), Tier-one suppliers and parts and aftermarket distributors in passenger vehicles, heavy-duty truck and bus, off-road and recreational vehicles, material handling, agricultural equipment, construction equipment and other commercial vehicle end markets.
The total purchase price for the Dortmund Fab is approximately 94 million Euro, of which a 37.2 million Euro down payment (approximately $40.5 million) was recorded in Prepaid expenses and other current assets in the Consolidated Balance Sheets. The down payment was paid in the third quarter of 2023 after regulatory approvals, and 56.7 million Euro was paid at closing.
The total purchase price for the Dortmund Fab was approximately €94 million, of which a €37.2 million down payment (approximately $40.5 million) was paid in the third quarter of 2023 after regulatory approvals, and €56.7 million (approximately $58.8 million) was paid at closing. The business is reported in the Electronics-Semiconductor business within the Company’s Electronics segment.
The product portfolio, including switching, circuit protection and power distribution products portfolios, are primarily used in commercial vehicle applications, as well as certain telecom and datacom applications.
Products are sold directly to a mix of OEMs, Tier One suppliers, aftermarket channels, as well as through general distribution. The product portfolios, including switching, circuit protection and power distribution products portfolios, are primarily used in commercial vehicle applications, as well as certain telecom and datacom applications.
In the Transportation segment, the Company’s competitors include Eaton Corporation, Pacific Engineering, MTA (Meccanotecnica Codognese), Amphenol Corporation, Sensata Technologies Holding NV, and TE Connectivity Ltd. In the Industrial segment, the Company’s major competitors include Eaton Corporation, GE Multilin, and Mersen.
In the Electronics segment, the Company’s competitors include Eaton Corporation, Bourns Inc., TDK, ON Semiconductor Corporation, Infineon Technologies, STMicroelectronics NV, Semtech Corporation, and Vishay Intertechnology Inc. In the Transportation segment, the Company’s competitors include Eaton Corporation, Pacific Engineering, MTA (Meccanotecnica Codognese), Amphenol Corporation, Sensata Technologies Holding NV, and TE Connectivity Ltd.
Products include a comprehensive portfolio of semiconductor components and modules including thyristors, MOSFETs, rectifiers and fast recovery diodes, IGBTs and wide band gap devices, and medium and high-power industrial applications. The acquisition of C&K Switches in 2022 significantly expanded the Company's electromechanical switches and interconnect solutions portfolios, which primarily serves industrial, transportation and datacom applications.
Products include a comprehensive portfolio of semiconductor components and modules including thyristors, MOSFETs, rectifiers and fast recovery diodes, IGBTs and wide band gap devices, and medium and high-power industrial applications.
BACKLOG The backlog of unfilled orders at December 28, 2024 was approximately $664.9 million, compared to $1,046.9 million at December 30, 2023 with the decrease primarily driven by a reduction in the semiconductor business within the Electronics segment. Substantially all the orders currently in backlog are scheduled for delivery in 2025.
BACKLOG The backlog of unfilled orders at December 27, 2025 was approximately $1,070.9 million, compared to $664.9 million at December 28, 2024 with the increase across all segments. Substantially all the orders currently in backlog are scheduled for delivery in 2026.
Accordingly, the Company is positioned within the global sustainability megatrend to enhance our product offering to help empower a sustainable, connected, and safer world. Many of the Company's key end markets are linked to sustainable applications such as electric vehicle charging infrastructure, renewable energy, and power management.
Many of the Company's key end markets are linked to sustainable applications such as electric vehicle charging infrastructure, renewable energy, and power management.
These products are used to protect personnel and equipment from excessive currents, over voltages, and electrical shock hazards. Products are sold direct to OEMs, and through both electrical and electronics distribution channels. The 2021 acquisition of Hartland expanded the Company’s contactors and transformers product portfolios, which primarily services HVAC and electric vehicle charging applications.
These products are used to protect personnel and equipment from excessive currents, over voltages, and electrical shock hazards. 7 Table of Contents Products are sold direct to OEMs, and through both electrical and electronics distribution channels.
Our Diversity, Inclusion, and Belonging Council, consisting of diverse global leaders from across the organization, helps to evolve and advance programs to further improve diversity, inclusion, and belonging in each region. Talent Management, Development & Succession Planning Building and maintaining a strong talent pipeline is essential to sustained performance and achievement of the Company's growth strategy.
Our Culture Council, composed of leaders from across the organization, provides guidance and perspective to advance initiatives that reinforce the Company’s values and enhance our culture in every region. 10 Table of Contents Talent Management, Development & Succession Planning Building and maintaining a strong talent pipeline is essential to sustained performance and achievement of the Company's growth strategy.
After sub-components are readied for assembly, final assembly is accomplished on fully automatic and semi-automatic assembly machines. Quality assurance and operations personnel, using techniques such as statistical process control, perform tests, checks and measurements during the production process to maintain the highest levels of product quality, including safety and reliability, and customer satisfaction.
Quality assurance and operations personnel, using techniques such as statistical process control, perform tests, checks and measurements during the production process to maintain the highest levels of product quality, including safety and reliability, and customer satisfaction. Additionally, the Company utilizes external wafer foundries and subcontracted test and assembly facilities for a portion of its semiconductor business.
Products include fuses and fuse accessories, PTC resettable fuses, ESD suppressors, varistors, gas discharge tubes, and semiconductor products such as discrete TVS diodes, TVS diode arrays, and protection thyristors.
Circuit protection technologies in the Electronics segment are designed to protect against harmful occurrences like voltage spikes, short circuits, power surges and electrostatic discharge. Products include fuses and fuse accessories, PTC resettable fuses, ESD suppressors, varistors, gas discharge tubes, and semiconductor products such as discrete TVS diodes, TVS diode arrays, and protection thyristors.
BUSINESS ENVIRONMENT Electronics Segment The Company designs, manufactures and sells electronic components and modules empowering its customers’ applications focused on a more sustainable, connected, and safer world. The ever-increasing advancements of applications surrounding these themes continues to drive greater demand for the Company’s innovative, reliable products and a higher level of product content within a broad range of applications.
The ever-increasing advancements of applications surrounding these themes continue to drive greater demand for the Company’s innovative, reliable products and a higher level of product content within a broad range of applications. Technologies within the Electronics segment provide protection, power control and sensing capabilities.
While, in the aggregate, the Company’s patents are important in the operation of its businesses, the Company believes that the loss by expiration or otherwise of any one patent or group of patents would not materially affect its business. 7 Table of Contents MANUFACTURING The Company’s manufacturing facilities are in China, France, Germany, India, Ireland, Italy, Japan, Lithuania, Mexico, Philippines, the U.K., the U.S., and Vietnam.
The Company regularly applies for patent protection on such new products. While, in the aggregate, the Company’s patents are important in the operation of its businesses, the Company believes that the loss by expiration or otherwise of any one patent or group of patents would not materially affect its business.
These overarching pillars guide our actions while providing us with the flexibility to serve the diverse needs of our local communities. Through corporate donations, employee donation matching, and volunteerism, we empower our teams to drive meaningful change locally and globally. SUSTAINABILITY The Company is committed to empowering change on its sustainability journey.
Through corporate 11 Table of Contents donations, employee donation matching, and volunteerism, we empower our teams to drive meaningful change locally and globally. SUSTAINABILITY The Company is committed to empowering change on its sustainability journey. Every Littelfuse employee, customer, and partner has the potential to drive positive change – environmentally, socially, and ethically.
The Company’s strategy is to prequalify suppliers for quality assurance and supply continuity, as much as possible, to localize supply sources close to its manufacturing sites. This helps to minimize the transportation of materials, and ultimately reduces the Company’s environmental footprint by decreasing emissions, consistent with its sustainability strategy.
This helps to minimize the transportation of materials and ultimately reduces the Company’s environmental footprint by 8 Table of Contents decreasing emissions, consistent with its sustainability strategy. For critical materials, the Company looks to diversify its supplier base by prequalifying second sources.
OVERVIEW Founded in 1927, Littelfuse is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 16,000 global associates, we partner with customers to design and deliver innovative, reliable solutions.
OVERVIEW Founded in 1927, Littelfuse is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 17,000 global associates, the Company leverages its position as a scaled supplier of passive electronics and protection components, complemented by high-value-add power semiconductor capabilities.
The acquisition of the Dortmund Fab in fiscal year 2025 expanded the Company’s power semiconductor capacity to support industrial application opportunities including energy storage, automation, motor drives, renewables, power supplies, and charging infrastructure. Through the growth of its product portfolio within the segment, the Company has expanded its presence across the industrial, transportation and electronics end markets it serves.
Through the growth of its product portfolio within the segment, the Company has expanded its presence across the industrial, transportation and electronics end markets it serves.
Community Involvement The Company works to affect positive change in the communities in which we work and live. Our giving and volunteerism philosophy is aligned with three pillars: Green – environment and conservation, STEM – technology innovation, and Equity – humanitarian, community, and family.
Our giving and volunteerism philosophy is aligned with three pillars: Green – environment and conservation, Science, Technology, Engineering, and Mathematics ("STEM") – technology innovation, and Equity – humanitarian, community, and family. These overarching pillars guide our actions while providing us with the flexibility to serve the diverse needs of our local communities.
Additionally, the Company utilizes external wafer foundries and subcontracted test and assembly facilities for a portion of its semiconductor business. The principal raw materials for the Company’s products include copper and copper alloys, resin and heat-resistant plastics, zinc, melamine, glass, silver, gold, raw silicon, solder, rubber, and various gases.
The principal raw materials for the Company’s products include copper and copper alloys, resin and heat-resistant plastics, zinc, melamine, glass, silver, gold, raw silicon, solder, rubber, and various gases. The Company’s strategy is to prequalify suppliers for quality assurance and supply continuity, as much as possible, to localize supply sources close to its manufacturing sites.
Recent Acquisitions • Dortmund Fab: On December 31, 2024, the Company completed the acquisition of a 200mm wafer fab located in Dortmund, Germany (“Dortmund Fab”) from Elmos Semiconductor SE. The Dortmund Fab will increase power semiconductor capacity to support opportunities across a broad base of industrial end markets including energy storage, automation, motor drives, renewables, power supplies, and charging infrastructure.
The acquisition of the Dortmund Fab in fiscal year 2025 enhances the resilience and reliability of our power semiconductor supply chain thereby strengthening our ability to support a broad base of industrial end markets, including energy storage, automation, motor drives, renewables, power supplies, and charging infrastructure.
Every Littelfuse employee, customer, and partner has the potential to drive positive change – environmentally, socially, and ethically. Together, we’re shaping a future defined by sustainable choices and conscientious actions. Innovation and collaboration are at the heart of the Company's sustainability journey.
Together, we are shaping a future defined by sustainable choices and conscientious actions. Innovation and collaboration are at the heart of the Company's sustainability journey. Accordingly, the Company is positioned within the global sustainability megatrend to enhance our product offering to help empower a sustainable, connected, and safer world.
Within these segments, the Company designs, manufactures and sells electronic components, modules and subassemblies to empower the long-term secular growth themes of sustainability, connectivity and safety. The Company has positioned itself within the center of these global structural growth themes by helping to enable its customers’ applications focused on a more sustainable, connected, and safer world.
BUSINESS ENVIRONMENT Electronics Segment 6 Table of Contents The Company designs, manufactures and sells electronic components and modules empowering its customers’ applications focused on a more sustainable, connected, and safer world.
As part of driving sustainable success, the Company values and celebrates diversity in every aspect of work with customers, suppliers, partners, and each other. The Company's commitment to diversity, inclusion and belonging creates a collaborative environment that draws out associates’ unique capabilities that contribute to innovation, deliver bold solutions and drive growth.
As part of driving sustainable success, the Company is committed to cultivating a strong, values‑driven culture that shapes how we work with customers, suppliers, partners, and one another. This commitment creates an environment where employees feel engaged, supported, and empowered to bring forward their best ideas—fueling innovation, bold solutions, and business growth.