Littelfuse (NASDAQ:LFUS) reported first-quarter 2026 results that management said exceeded internal expectations, driven by broad-based demand strength and margin expansion across its segments.
First-quarter results top expectations
President and CEO Greg Henderson said the company delivered a “strong start to the year,” with net sales of $657 million, up 19% year-over-year, including 9% organic growth. Henderson attributed the outperformance to execution against demand strength across several end markets and continued benefits from Littelfuse’s position in “safe and efficient electrical energy transfer” as applications move toward higher-power architectures.
Cash generation improved as well. Khandelwal reported operating cash flow of $80 million and free cash flow of $66 million, up 55% year-over-year. Littelfuse ended the quarter with a net leverage ratio of approximately 1x and returned $90 million to shareholders “through our dividend,” according to Khandelwal.
Market and end-market demand: data centers and grid lead
Henderson said Littelfuse saw “strong double-digit growth” in data centers and grid utility infrastructure, supported by electrification-related demand. He described the company’s diversified industrial markets as producing “meaningful revenue growth,” aided by broad demand and channel execution, though residential HVAC remained soft.
In transportation, Henderson said passenger vehicle sales increased high single digits due to content expansion and share gains “amid a soft global production environment,” while commercial vehicle sales grew mid-single digits. The company also exited the first quarter with a book-to-bill “well above 1.0,” and Henderson noted bookings were again up more than 20% versus the prior year.
During the Q&A, Khandelwal added that orders improved sequentially from fourth quarter to first quarter, and he said there was also sequential improvement “as we went through the quarter.”
Analysts asked for more detail on diversified industrial demand within the Electronics segment. Henderson said momentum broadened beyond data centers, noting that “all of our industrial segments, with the exception of HVAC, are doing well,” and he highlighted diversified industrial exposure including “aerospace and defense and medical.”
Basler integration and design wins in high-power infrastructure
Henderson highlighted progress integrating Basler, which Littelfuse acquired in December. He said Basler “significantly strengthens our position in high-power applications” and “outpaced our initial expectations during its first full quarter as part of the Littelfuse portfolio.” Khandelwal later quantified Basler’s impact within the Industrial segment, saying it contributed 39% of that segment’s year-over-year growth.
Henderson tied Basler’s opportunity set to “grid modernization” required to support data center infrastructure build-outs. He cited two design wins during the quarter:
- A strategic design win with a data center power system solutions market leader for a new 800-volt system deployment, where the customer selected Littelfuse’s “protection, automation, and control capabilities” for a high-voltage DC solution.
- A design win with a leading U.S. grid infrastructure utility for Basler’s high-power excitation systems, with shipments “slated to begin in 2027,” which Henderson said provides long-term visibility into Basler’s growth trajectory.
Henderson said potential revenue synergies between Basler and Littelfuse are “increasingly clear,” citing complementary technologies that can move the company “up the value chain” with more comprehensive high-power solutions.
Segment performance and margin drivers
In the Electronics segment, Khandelwal reported sales up 18% year-over-year, including 15% organic growth. Passive products rose 22% organically, while semiconductor products grew 8% organically, driven by protection semiconductors. Adjusted EBITDA margin in Electronics was 25.1%, up 300 basis points.
In Transportation, sales increased 5% year-over-year, with 1% organic growth. Khandelwal said passenger vehicle organic sales increased 4% on content expansion, share gains, and pricing, partially offset by lower commercial vehicle volumes tied to the marine business exit. Excluding the marine exit, commercial vehicle sales were flat. Transportation adjusted EBITDA margin rose 200 basis points to 19.1%, which Khandelwal attributed to “disciplined execution and productivity initiatives.”
In Industrial, sales increased 45% year-over-year, including 5% organic growth. Khandelwal said strength in grid and utility infrastructure and data centers was partly offset by soft residential HVAC volumes. Industrial adjusted EBITDA margin increased 340 basis points to 21.9%.
On margin dynamics, Khandelwal said first-quarter flow-through was about 38%, above the company’s long-term expectation of 30%–35%. He also addressed commodity pressures, saying Littelfuse is seeing inflation in materials such as “silver” and “copper,” and that teams are working to offset those pressures through supply chain savings, productivity, and “pricing or surcharges,” with a goal of being “price cost neutral” as in 2025.
He also discussed profitability initiatives within semiconductors, describing protection as a “most profitable franchise” with double-digit growth, while noting Littelfuse is pursuing product rationalization and footprint optimization in power semiconductors to drive longer-term structural profitability improvement.
Second-quarter outlook and Investor Day focus
For the second quarter, Khandelwal guided to net sales of $690 million to $710 million, representing 14% growth versus the prior year. The outlook includes 8% organic growth and a 6% contribution from Basler. Adjusted diluted EPS is expected to be $3.65 to $3.85, with an adjusted effective tax rate of 21%–22%.
Management repeatedly pointed investors to an upcoming Investor Day on May 14 in New York, where Henderson said the company plans to provide more detail on strategy, market opportunities—particularly in data centers—and its financial “playbook.”
In response to a question about acquisitions, Henderson said the company continues to view growth as both organic and inorganic, describing an “active pipeline” and emphasizing discipline and strategic alignment. Khandelwal added that the balance sheet provides “ample capacity” for acquisitions given net leverage around 1x, and said the company plans to outline “clear targets” at Investor Day for what it expects to do over the next five years.
About Littelfuse (NASDAQ:LFUS)
Littelfuse, Inc is a global manufacturer of circuit protection, power control, and sensing technologies. Founded in 1927 and headquartered in Chicago, Illinois, the company develops and produces a broad range of products designed to safeguard electrical and electronic systems across a variety of end markets. Littelfuse’s offerings include fuses, semiconductors, relays, and sensors, all engineered to protect against overcurrent, overvoltage, and thermal events in demanding applications.
The company’s product portfolio is organized into key segments such as Automotive, Industrial & Electronics, and Power & Sensor.
