The Price Wars Are Officially Over
Engineers on the forums called it before the price books did: the low-cost MCU competition of 2025 has ended. What replaced it:
- STM32 microcontrollers: lead times up to 52 weeks
- Texas Instruments, NXP, and Infineon: price increases up to 85% on select parts, effective April 2026
- Analog Devices: 15% to 30% across all lines, with military-grade components up 30%
- Infineon: 20 to 30-week lead times
- Mature-node prices (8-inch and 12-inch) rising as foundries reallocate capacity to AI products
The driver is not demand for MCUs. It is foundries pointing mature-node capacity at higher-margin AI work and repricing what is left.
Nexperia Goes Dark
The sharpest single-supplier event: Nexperia discrete semiconductor supply is functionally frozen on wafer viability concerns, forcing mid-tier buyers to evaluate drop-in alternatives on short notice.
Discretes are exactly the parts that do not get watched. They are cheap, they are everywhere, and a freeze on them strands otherwise complete boards - the same "buildability" failure now showing up across passives and substrates.
The Second Hurdle: Sanction Screening
Finding an alternate is no longer the end of the job. The compliance perimeter tightened this month:
- Section 1260H screening now implicates widely-used suppliers including TP-Link (networking), BYD, CALB, and EVE Energy (batteries), and BOE and Tianma (displays).
- China announced major RoHS expansions, broadening both covered products and restricted substances.
- MOFCOM Announcement No. 26 established a rewarded reporting mechanism for export-control violations on gallium, germanium, antimony, and rare earths, effective July 1.
- China blocked dual-use exports to 10 American firms and added 20 Japanese companies to its control list.
A qualified alternate that fails sanction screening is not an alternate. Run both checks together or you will do the work twice.
What Buyers Should Do Now
- Next 48 hours: Identify every Nexperia discrete and STM32 line item on active BOMs and confirm on-hand plus on-order coverage. These are the parts most likely to strand an otherwise complete build.
- Next 30 days: Run sub-tier BOM screening for Section 1260H exposure in parallel with alternate qualification, and update compliance matrices for China's expanded RoHS lists before the next design release.
- Next 90 days: Move mature-node actives and MCUs onto multi-year long-term agreements with secured wafer capacity commitments. Extend PO horizons to a full year where lead times already exceed 40 weeks.