onsemi's AI Power Story Is Accelerating-Now the Question Is Whether It Can Keep Double-Digit Momentum

AI data center revenue is moving from narrative to numbers

AI data center revenue is expected to more than double in 2026, and the market is reacting because management is tying that outlook to actual quarter execution rather than just long-term promise.

In the latest quarter, onsemi reported revenue of $1,604 million, non-GAAP diluted EPS of $0.74, and a non-GAAP gross margin of 39.3%. It also said cash from operations increased 150%. That mix matters: revenue and margin show demand is translating into results, while stronger cash flow suggests the growth is being funded organically.

onsemi already has a foothold in automotive and industrial end-markets, so the key question is whether AI data centers can become a durable second growth engine rather than a temporary upside swing. The bear case is that auto and industrial demand remains cyclical, so the AI ramp still has to prove it can hold up in a softer backdrop.

Why AI racks create more onsemi content

A longer power tree means more opportunities

AI racks draw far more power than traditional servers, and that energy has to be managed through multiple conversion stages. For onsemi, that can mean more converters, controllers, and related power devices across the system. Management says customer adoption is growing across the power tree, which matters because deeper adoption across the architecture is usually more valuable and harder to displace than a single-component win.

Sequential acceleration already shows up in results

onsemi said its AI data center business accelerated, growing more than 30% sequentially in the first quarter. Sequential acceleration is an early signal that AI demand is feeding into shipments, not just sitting in design-win decks. The company also said demand strengthened through that quarter.

Margin and cash flow are holding up

onsemi is guiding to gross margins of 38-40% in Q2. That does not prove AI is the sole driver, but it is consistent with a product mix that is not being diluted by the AI push.

Second-quarter free cash flow was $425.4 million and quadrupled year over year, while earlier trailing-twelve-month data pointed to a record LTM free cash flow margin of 24%. Taken together, the results suggest the business is generating enough cash to fund growth without relying on financial leverage.

The core debate

Skeptics can still argue that AI data centers are small relative to onsemi's larger auto and industrial base. That is fair. The bull case, though, is not just about volume: it is about whether onsemi captures more of the power architecture as AI builds become more demanding.

If the company can keep that momentum going, investors have a stronger case for treating AI as a real earnings contributor rather than a future story.

What the next few quarters need to confirm

One good quarter is not enough to lock in a new valuation. What matters now is consistency over the next two to three quarters.

The near-term test is the earnings guide

onsemi has set a third-quarter non-GAAP EPS target of $0.81 to $0.93. Landing near that range would help show that the business is gaining traction, not just enjoying a one-off strong period.

More important than a headline beat is whether revenue, margin, and cash flow keep moving together. The stock does not need perfect numbers every quarter; it needs evidence that the mix shift is durable.

Signals investors should watch

Confirmation signs: - Q3 non-GAAP EPS of $0.81 to $0.93 holds up into the print - Gross margin stays near the recent 39.3% non-GAAP level and within the 38% to 40% gross margin range - Management continues to describe sequential improvement throughout the year - AI demand remains broad enough to support the expectation that AI data center revenue should more than double in 2026

Watchpoints: - onsemi still describes automotive and industrial end-markets as stable while AI accelerates - gross margin does not slip meaningfully from the recent 39.3% non-GAAP level - operating performance keeps improving alongside revenue, consistent with the earlier report that operating income growth outpaced revenue growth by 2x

What would weaken the setup

A clear miss against the $0.81 to $0.93 Q3 EPS guide would matter. So would a meaningful margin slip or softer commentary on demand.

The next major catalyst is the September 16 investor day. That event could matter more than a single earnings release because it offers a chance to check whether the long-term financial plan matches the short-term momentum.

For now, the constructive read remains conditional: if onsemi can keep margin, earnings, and cash flow moving in tandem over the next few quarters, the AI power story has a real case to keep building.