Infineon is a better pick than STMicroelectronics because data-center power chip demand is set to inflect while its smartphone exposure is much lower. About a fifth of STM's revenue still comes from smartphones, which are vulnerable to soaring memory prices. Rising rack power densities and 800V rollouts should lift demand, and Infineon has very competitive SiC and GaN products. Data-center power chips could top a quarter of Infineon's sales, more counting energy storage. x.com  x.com 

Wolfspeed has yet to show AI data centers can fix its economics. It has gone four quarters without sizing AI data-center revenue, reporting only decelerating sequential growth of roughly 50%, 30% and 20%, and calls the opportunity 'moderate'. Gross margin is -16.2%, with 1.7x debt to equity after a Chapter 11 that closed in September. Yet Lite-On's 800 VDC power racks, due for mass production in November, run on Wolfspeed's 200mm SiC, so a rerate could land on it first. x.com  x.com 

BorgWarner's 800V inverter platform could bring substantial silicon-carbide revenue to Wolfspeed. At an assumed $400 per EV for a traction inverter, within a $300-$600 range, 100,000-400,000 vehicles would imply $40 million-$160 million for Wolfspeed, versus $650 million in revenue now. A prior BorgWarner program covered 400,000 vehicles; volume could be higher as EVs made up 25% of new vehicle sales in 2025 and should keep gaining share. x.com 

Navitas is a one-customer concentration story facing heavy competition from tier-one suppliers. Its GaN portfolio winning Nvidia adoption played out, but STMicroelectronics and Infineon also supply Nvidia and are strong in GaN and SiC. GaN output may quadruple by 2030, yet SiC prices were hammered by Chinese capacity, unresolved, so revenue and margins could diverge sharply. Power and thermal efficiency are better played across these names than through Navitas alone. x.com 

Chinese power chipmakers Silan Microelectronics and China Resources Microelectronics are priced on old-cycle valuations despite tighter-for-longer supply. Per UBS, global power IDMs run full without big capex increases, unlike 2021. Demand is beating on 800V EVs, SiC storage and AI data centers, where power-chip content per GW doubles from $80M to $180M. Chinese names are up 34% this year versus 135% globally, and Silan trades at 4.1x forward book, below its 4.3x average, as ROE may rise to 12%. … Show more

Silicon carbide's years of oversupply are turning, as China's Yangjie Tech says its capacity is fully booked, per SCMP, a positive sign for Infineon, Wolfspeed and STMicroelectronics. As more makers fail to meet rising demand, orders should also flow to Wolfspeed, whose heavily underutilized New York SiC fab would gain tremendous operating leverage. x.com 

Infineon, STMicroelectronics and NXP have little value upside left from humanoid robotics after rallying hard on the AI datacenter theme. Infineon's CEO said humanoids could eventually rival AI datacenters as a revenue opportunity, about 20% of sales, yet Infineon saw insider sales this week. Humanoids may create few real bottlenecks: about 60% of parts come from the existing auto supply chain, most value will likely accrue in China and OEMs will integrate vertically, leaving heavy competition. … Show more

Navitas's place in NVIDIA's 800 VDC ecosystem carries little pricing power because the silicon tier is crowded. NVIDIA names fourteen silicon suppliers, Navitas among them, and rent comes from scarcity; SiC and GaN also split the socket by stage. Per SemiAnalysis, rollout is phased, and the first stage is a retrofit into existing wiring with the smallest content per site. Unlike optical, no 800 VDC tier has disclosed dollars yet; a first order with a figure and date would change the picture. … Show more

Wolfspeed commands the silicon carbide wafer chokepoint as Western and Chinese supply chains separate. It holds 33.7% of the SiC wafer market including Chinese rivals and 55-60% excluding them, much as AXT does in indium phosphide. China may restrict exports to keep wafers for its own AI buildout. Its bankruptcy came from pioneering costly 8-inch SiC production before it had today's data-center revenue and pipeline, and it has since restructured. x.com  x.com  x.com 

Vicor stands to capture demand for high-density power delivery as power conversion moves closer to the AI processor, with royalties as early optional upside. On September 30 Vicor raised Q3 growth guidance from over 20% to over 30% because VPD royalties beat expectations, as Delta, Eaton, EPC and others showed 800VDC systems and converters with fewer conversion stages. Vicor expects to finish modernizing FAB1 by year-end, expanding capacity for high-density modules, with FAB2 to follow. x.com