Littelfuse

As of 2026-10-09, Littelfuse has 0 tracked suppliers and 1 tracked customer in this dataset.

Sourced from 1 reference — primary source — last verified 2026-06-12.

Circuit protection leader with growing power semiconductor line.

Ticker: NASDAQ: LFUS
Headquarters: Chicago
Founded: 1927
Revenue: $1.2B (FY2017) · +15.7% YoY
Net income: $-72M
Operating margin: 3.1%
Market position: niche
Value-chain segment: Power Semiconductors (incl. SiC, GaN)
Key products: fuses, TVS diodes, power semis

About Littelfuse

Littelfuse, headquartered in United States, operates in the Power Semiconductors (incl. SiC, GaN) segment of the semiconductor & AI supply chain and is positioned as a market niche there. Its key products include fuses, TVS diodes, power semis. wafergraph maps 1 tracked customer for Littelfuse across the value chain. It has a supply-chain criticality score of 50/100, with 236 companies downstream of it.

Littelfuse, Inc. is an American electronics manufacturing company headquartered in Chicago, Illinois. The company primarily produces circuit protection products (fuses) but also manufactures a variety of switches, automotive sensors and, through its subsidiary Zilog, microprocessors. Littelfuse was founded in 1927. In addition to its Chicago, Illinois, world headquarters, Littelfuse has more than 40 sales, distribution, manufacturing and engineering facilities in the Americas, Europe and Asia. Littelfuse is the developer of AutoFuse, the first blade-type automotive fuse.

Role in the chain

Littelfuse is a market niche in Analog, Power, RF (Power Semiconductors (incl. SiC, GaN)), headquartered in United States. Circuit protection leader with growing power semiconductor line.

Diligence questions

The dataset names 1 tracked customer for Littelfuse. How concentrated is demand among those names, and which of them have a documented second source in this graph?
Littelfuse is headquartered in United States. What jurisdiction, export-control or logistics risk sits at that HQ, versus at the fabs or plants the filings actually name?
Littelfuse trades as NASDAQ:LFUS. What does the latest reported period say about capacity and backlog versus the graph position above?
Before treating any edge as a verified relationship, check the provenance labels on the company page and the method note at /methodology.

Full diligence pack for Littelfuse