Littelfuse, Inc.LFUS
NasdaqGS•Technology•Electronic Components
Littelfuse, Inc. designs, manufactures, and sells electronic components, modules, and subassemblies. It operates through three segments: Electronics, Transportation, and Industrial. Its Electronics segment offers fuses and fuse accessories, coefficient resettable fuses, switches and interconnect solutions, polymer electrostatic discharge suppressors, varistors, reed switch based magnetic sensing, and gas discharge tubes; and discrete transient voltage suppressor diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors and diodes, and insulated gate bipolar transistors. This segment serves data center computing 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, passenger vehicles, and commercial vehicles. Its Transportation segment provides blade, resettable, high-current, and high-voltage fuses; battery cable protectors; circuit breakers, and power distribution modules; and sensor products. This segment serves heavy-duty truck and bus, construction, agriculture, off-road and recreational vehicles, material handling, passenger and commercial vehicles, and marine markets. Its Industrial segment offers industrial fuses, protection relays, contactors, transformers, residual current devices and monitors, ground fault circuit interrupters, arc fault detection devices, solid state switches, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems, industrial safety, non-residential construction, MRO, mining, and factory automation applications. It sells its products through distributors, direct sales force, and manufacturers' representatives. The company was founded in 1927 and is headquartered in Rosemont, Illinois.
Littelfuse, Inc. (LFUS) reported trailing twelve months revenue of $2.49B as of March 2026, a 12.6% increase year-over-year. Quarterly revenue reached $656.97M, reflecting continued top-line momentum.
Littelfuse, Inc. reported a TTM net loss of $40.12M, with quarterly EBITDA of $136.62M. The operating margin expanded from 12.7% to 15.4%, suggesting improving cost efficiency and pricing discipline.
The spread between operating margin (15.4%) and net margin (11.4%) indicates tight cost control with minimal non-operating drag. Net margin has improved from 7.9% a year ago, signaling stronger bottom-line efficiency.
LFUS trades at a P/S of 4.7x. The price-to-book ratio of 4.7x reflects a moderate premium to book value.
The company generated $66.16M in free cash flow over the trailing twelve months, a 55.1% increase year-over-year, indicating strong cash generation ability. The balance sheet shows $3.86B in total assets with $531.05M in long-term debt against $2.51B in stockholders equity for a debt-to-equity ratio of 0.2, a conservative capital structure. Data based on the most recent quarterly reports.
Competitive analysis based on 21 quarters of fundamental data
Operating margins are under pressure, averaging 4.9%. The business may lack pricing power or face rising costs.'
ROE is low or negative, suggesting limited competitive advantage or capital allocation challenges.
Free cash flow is consistently positive and growing — a hallmark of a capital-light business that can self-fund growth.
Revenue shows resilience with 5 of 7 quarters posting growth — demand is generally stable but has seen some soft patches.
Data-driven red flags and warnings across 21 quarters
Operating margins dropped 71.8% over recent quarters — a sharp decline suggesting serious cost or pricing challenges.
FCF covers net income by 0.5x on average — earnings are well-supported by cash generation.
D/E ratio is 0.2 — conservative capital structure with low financial risk.
Revenue is stable or growing over recent quarters — demand appears durable.
Free cash flow is consistently positive — the business self-funds without external capital reliance.
Share count is stable — no significant dilution or buyback activity.