Verified Sep 2026
Electronics & Software
·
Rosemont, Illinois
·
Since 1927
Littelfuse, founded in 1927 and headquartered in Rosemont, Illinois, is a public electronics and software manufacturing company with 10,000–50,000 employees. It designs circuit protection, power control, and sensing solutions for automotive, electric-vehicle, electronics, appliance, plumbing-hardware, and renewable-energy industries.
Littelfuse at a glance
Revenue
2.4B
FY2025 · up 9% YoY
Employees
10,000-50,000
Over 20 countries · company-reported
Founded
1927
In Chicago · the original little fuse
Headquarters
Rosemont, Illinois
Moved 2024 · near Chicago O'Hare
Ownership
Publicly traded (NASDAQ: LFUS)
NASDAQ: LFUS
Certifications
IATF 16949:2016
Current · multi-site
Import activity
7104
US import shipments on record
Industries
Automotive
Electric Vehicles
Electronics
Appliance
Plumbing & Hardware
Renewable Energy
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
7104
Named foreign suppliers
4
Top origins
China · Taiwan
Most recent shipment
2026-09-21
Shared foreign counterparties do not establish that these companies buy from Littelfuse.
What this tells a buyer
Customs data shows 7,104 shipments as of September 2026, with sourcing dominated by Littelfuse's own subsidiaries in Suzhou and Dongguan, China, rather than third-party suppliers.
The company manufactures circuit protection devices, power semiconductors, electromechanical components, automotive sensors, and electronic modules.
Littelfuse is publicly traded on NASDAQ under ticker LFUS with approximately 16,000–17,000 associates operating in over 20 countries with more than 40 facilities worldwide.
Source: US customs bill-of-lading records and public filings · Last verified Sep 29, 2026
STABILITY SIGNALS
Established & strong
99 years in operation (founded 1927).
Actively importing as of the most recent record (2026-09-21).
Publicly listed; no distress event on record.
Overview
Littelfuse, founded in 1927 and headquartered in Rosemont, Illinois, is a public electronics and software manufacturing company with 10,000–50,000 employees. It designs circuit protection, power control, and sensing solutions for automotive, electric-vehicle, electronics, appliance, plumbing-hardware, and renewable-energy industries.
At a glance
Attribute | Detail |
|---|---|
Founded | 1927 |
Headquarters | Rosemont, Illinois |
Employees | 10,000-50,000 |
Revenue | 2.4B |
Ownership | Publicly traded (NASDAQ: LFUS) |
Primary capability | Electronics & Software |
What Littelfuse makes
The company manufactures circuit protection devices, power semiconductors, electromechanical components, automotive sensors, and electronic modules.
Trade and customs footprint
Customs data shows 7,104 shipments as of September 2026, with sourcing dominated by Littelfuse's own subsidiaries in Suzhou and Dongguan, China, rather than third-party suppliers. US customs bill-of-lading records list 7104 inbound shipments across 4 foreign suppliers; the most recent recorded shipment is dated 2026-09-21.
Company details
Littelfuse is publicly traded on NASDAQ under ticker LFUS with approximately 16,000–17,000 associates operating in over 20 countries with more than 40 facilities worldwide. Littelfuse was founded in 1927, has an estimated 10,000-50,000 employees, and is headquartered in Rosemont, Illinois. On the LightSource stability read it is rated "Established & strong": 99 years in operation (founded 1927). Actively importing as of the most recent record (2026-09-21). Publicly listed; no distress event on record.
Frequently asked questions
What does Littelfuse make?
Littelfuse, founded in 1927 and headquartered in Rosemont, Illinois, is a public electronics and software manufacturing company with 10,000–50,000 employees. It designs circuit protection, power control, and sensing solutions for automotive, electric-vehicle, electronics, appliance, plumbing-hardware, and renewable-energy industries.
Where is Littelfuse headquartered?
Littelfuse is headquartered in Rosemont, Illinois (6133 N River Rd, Rosemont, Illinois, 60018-5100).
When was Littelfuse founded?
Littelfuse was founded in 1927.
How big is Littelfuse?
Littelfuse has an estimated 10,000-50,000 employees, with revenue in the 2.4B range.
Is Littelfuse publicly traded?
Publicly traded (NASDAQ: LFUS). Public financial figures are drawn from its filings.
Does Littelfuse import from overseas suppliers?
US customs bill-of-lading records show 7104 inbound shipments for Littelfuse.
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Last verified Sep 2026. Is this your company? Request a correction.
Latest news
Dec 2025
Littelfuse completed the acquisition of Basler Electric Company, a maker of electrical control and protection solutions with annualized sales of about $130 million, for $350.3 million (company announcement).
Feb 2025
Dr. Greg Henderson became President and CEO, succeeding David Heinzmann, who retired after roughly 40 years with the company (company announcement).
Dec 2024
Littelfuse completed its acquisition of a 200mm wafer fab in Dortmund, Germany from Elmos Semiconductor for about 94 million euros, expanding power-semiconductor capacity (company announcement).
Refreshed weekly · updated Sep 27, 2026
Leadership
Location & contact
Phone
+1 773-628-1000
Certification
IATF 16949:2016
Design and manufacture of circuit protection, power control, and sensing components
Inside the facility
Photos and video: littelfuse.com
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