The Dublin semiconductor startup paused its solid-state circuit-breaker push to chase a nastier bottleneck: moving enormous current into AI processors without wasting it across the motherboard.
Founded in 1927 to keep radios from frying, Littelfuse now makes the fuses, semiconductors and sensors that quietly protect everything from EV chargers to data centers - a $2.4 billion business built on parts most people never see.
Everyone said the next leap in power electronics had to come from exotic materials. iDEAL Semiconductor bet it could wring more out of plain silicon - and now its chips are shipping from a Minnesota fab.
onsemi does its most consequential work in the awkward space between raw electricity and useful motion. Its power chips and sensors are becoming the quiet architecture behind electric cars, factory robots and AI data centers.