Prediction: ON Semiconductor Could Be a Sleeper AI Infrastructure Winner - 24/7 Wall St.

The market is mispricing ON Semi as an auto-chip cyclical. The 800V DC architecture shift in AI data centers is converting its power semiconductor portfolio into a structural necessity — a valuation error, not a narrative bubble. Technical cascade: Eliminating transformer stages pushes all power-conversion stress onto SiC MOSFETs. Per-rack SiC content jumps from single digits to dozens — an architectural replacement, not linear growth. Upstream substrate and epi capacity (Tianyue, Wolfspeed) benefits first; ON Semi's integrated modules and gate drivers capture the midstream increment; hyperscaler capex cadence sets order visibility. Supply-chain constraint: Chinese manufacturers hold 60%+ of global SiC substrate capacity. CHIPS Act subsidies won't close that gap before 2027. ON Semi's wafer dependency on Taiwan, China and mainland foundries is a tail risk that must be discounted into any re-rating. Competitive window: Infineon and STMicro hold first-mover advantages in SiC modules, but ON Semi's cross-pricing edge (automotive-grade reliability × data-center cost structure) is a defensible moat. NVIDIA's Rubin platform power selection, locking in H1 2026, is the irreversible positioning battle. 12–24 month tail: 800V DC becomes the default for new DC builds by 2027. Once AI revenue crosses 20% of ON Semi's mix, the valuation anchor shifts from 8× PE to 15–18× PE. But Chinese SiC price erosion (15–20% annual) will compress margins. The 24% upside rests not on AI hype but on share reallocation driven by a power-architecture generational switch.