Health score, competitive moat, risk signals, and key metrics at a glance.
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.
Competitive analysis based on 60 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 60 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.
as of March 2026
Revenue, EBITDA, operating income, net income, EPS, and shares
Gross, EBITDA, operating, and net margin trends
P/E, P/S, P/B, EV/EBITDA, FCF yield, and earnings yield
Total assets, cash, debt, book value, and leverage
Operating cash flow, free cash flow, FCF margin, and earnings quality
