STMicroelectronics (ST) has hiked prices again.
Power semiconductors have already seen two rounds of hikes in April and July this year — that alone is not news. But this time is different: as reported by esmchina, the long-feared third round has emerged in mid-to-late August. ST has adjusted prices again, China Resources Micro and Silan Micro have followed, lead times have stretched to 40-52 weeks, and increases exceed 15-50%.
In 2026, when memory price hikes dominate every headline, power semiconductors are quietly becoming the most underestimated storyline.
Background: When the End of AI Is Electricity
Why power semiconductors, of all things?
The answer lies in NVIDIA's Rubin architecture revealed in July: the next-generation GPU for agentic AI delivers 10x agentic throughput per unit of energy versus the prior generation, pushing rack power density from 30kW toward 120kW+. The more compute, the more power consumed; the more power consumed, the thicker and more complex the "power-delivery chain" from the grid to the chip.
Every link in this chain — IGBTs, MOSFETs, SiC devices, high-current inductors, power modules — is seeing multiples of demand. Explosive AI data-center power demand, plus automotive/industrial recovery, 8-inch capacity tightness and rising wafer costs: supply and demand are both tight. This is not sentiment-driven hype.
The Causal Chain: From Rubin's 10x Efficiency to 52-Week Lead Times
Surface event: ST adjusts prices again, confirming the third round (reported around Aug 19); lead times of 40-52 weeks; some suppliers have hiked up to 5 times within 2026.
Underlying driver: AI power demand is structural, not a short-term pulse. Rubin's 10x per-energy throughput keeps power density climbing at the same compute level, pushing architectures from 48V toward 800V and doubling SiC/high-current device usage. Meanwhile 8-inch capacity expansion is measured in years — the physical supply bottleneck means the hike cycle will not reverse quickly.
AI compute arms race → 120kW+ rack power → power-architecture upgrades and doubling device usage → fabs at full capacity, 52-week lead times → third round of price letters, panic inventory locking → downstream BOM costs rise → domestic power vendors gain volume and price, substitution window widens
Causal projection: the third round has landed (already fact) → spot prices step up again → downstream double-ordering tightens supply further → the 52-week vs. 4-6 week domestic lead-time gap widens → domestic power vendors see volume and price gains in Q3-Q4 → the cycle is expected to run through 2027.
Outlook: short term (1-2 months) more third-round letters, spot prices firm, 40-52 week lead times; mid term (Q4-2027H1) capacity ramp relieves the gap but AI power demand stays rigid — no fast reversal; long term (2027+) SiC costs fall and capacity releases, structural tightness turns into partial oversupply. Key verifiers: ① a fourth round in September (do Infineon/onsemi follow?) ② CR Micro/Silan Q3 gross margins above 50%? ③ channel MOSFET spot prices falling for two consecutive weeks?
What This Means for the Industry and Customers
If you are a procurement/supply-chain leader: treat "the third round has landed" as a decision baseline, not a negotiation chip. Yicai reported an unusual divergence on Aug 25 — Samsung and SK hynix shares fell hard again while memory chips remain in shortage and rising. Stock prices are sentiment; price hikes are supply and demand. Do not be misled by secondary-market noise; trust contract prices and lead-time data. Price locking now protects gross margin through 2027.
If you are a power/NEV/industrial customer: a 40-52 week lead time means ordering today, delivering next year. Those still waiting in August may face a fourth round in September. Qualify domestic second sources early and optimize at the full-BOM level (bundled replacement packages) — far more effective than squeezing a single part number. 52-week original lead times vs. 4-6 weeks domestic stock is no longer a choice.
If you work at a domestic power vendor: this is a double window of volume/price gains plus import substitution. CR Micro and Silan raising prices repeatedly is itself a signal of rising pricing power. Japan's Aug 1 third-round controls on advanced packaging equipment upgrade "domestic substitution" from an industry logic to a national-security logic — with policy and orders both endorsing it, adoption will only accelerate.
Closing View
For two years everyone has talked about memory, HBM and advanced packaging, but power semiconductors are the "most honest" link in this rally: no grand narrative, no monopoly premium — just pure demand overflow from the physical world. AI needs electricity, and electricity flows through power devices.
The third round validates a trend, not panic. When lead times hit 52 weeks, supply-chain management stops being a cost problem and becomes a survival problem. To those still waiting for "price cuts": what arrives next will not be a reduction letter but a fourth hike letter. And for China's power semiconductor industry as a whole, the substitution window torn open by this rally is the best moment to turn "workable" into "excellent" and "alternative" into "mainstream".