Rohm stock gains attention as new automotive MOSFET supports long-term growth story

Rohm Co., Ltd. stock (ISIN JP3982800009) is drawing investor attention after the Japanese semiconductor manufacturer introduced a new Wide-SOA automotive MOSFET that ties into its long-term power-device growth strategy as of September 18, 2026. According to Simply Wall St, the launch supports Rohm's push to grow SiC and power-device related revenue while the company works to move from a loss-making position to sustainable profitability.

New Wide-SOA MOSFET extends Rohm's power-device roadmap

As of September 18, 2026, Rohm has released the RS4P063BPHZG, a 100V Wide-SOA MOSFET designed for automotive safety and protection circuits, using a common 5060-size package to target short-duration high-power loads in safety-critical car electronics.Simply Wall St The product leverages Rohm's Wide-SOA expertise from AI servers and industrial power supplies and applies it directly to automotive circuits such as airbags, pretensioners and battery protection, where reliability expectations and design-win lifetimes are high.

According to Simply Wall St, the RS4P063BPHZG is already in mass production and becomes part of a broader roadmap aimed at growing SiC and power-device revenue through capacity investments and organizational changes that align product families with specific applications. For investors, this means the new MOSFET acts as an operational proof point: it tests Rohm's ability to win long-duration slots in safety-critical automotive systems and to convert its technology investments into recurring sales.

Loss-making starting point and long-term earnings targets

While the new product strengthens Rohm's technical positioning, the financial narrative remains demanding. The same analysis notes that Rohm currently sits in an unprofitable position, with a reported loss of JPY 152,403 million, which the company aims to turn into sustainable earnings.Simply Wall St Looking ahead, Rohm's narrative projects revenue of JPY 612.6 billion and earnings of JPY 78.7 billion by 2029, assuming annual revenue growth of 7.0 percent and an earnings swing of about JPY 231.1 billion from the present loss level.Simply Wall St

That projected swing from a loss of JPY 152.4 billion to earnings of JPY 78.7 billion represents a substantial change in profitability expectations and underlines how much execution on cost reductions and demand stabilization will matter for shareholders. The analysis highlights that the immediate swing factor is still Rohm's ability to improve costs versus elevated fixed expenses and to work through prior inventory issues that weighed on operating profit, while the new Wide-SOA automotive MOSFET is seen as supporting, rather than replacing, these core tasks.Simply Wall St

Contrasting analyst scenarios and demand risks

Rohm's long-term projections do not stand alone. According to the same report from Simply Wall St, one more cautious analyst scenario models revenue of JPY 532.4 billion and earnings of JPY 71.8 billion by 2029. In that view, progress on the growth and margin story is slower, and the primary risk is that demand for traction inverters in electric vehicles underwhelms, leaving Rohm with less momentum in key power-device end markets.

For investors, the gap between projected revenue of JPY 612.6 billion and the more cautious JPY 532.4 billion by 2029 highlights how sensitive the story is to end-market demand and product execution. If Rohm converts the RS4P063BPHZG and related Wide-SOA devices into design wins across automotive safety and battery protection, the stronger scenario becomes more plausible; if demand in industrial and EV-linked power devices remains weak, the lower analyst assumptions could gain weight.Simply Wall St

Rohm stock price and trading context

On the Tokyo Stock Exchange, Rohm stock (ticker 6963) remains a mid-cap semiconductor name, but the most recent structured price and range data in the available sources relate to earlier periods, including European trading levels quoted in July 2025. In that context, Rohm shares were recorded at EUR 10.65 in Frankfurt trading on July 16, 2025, down 3.49 percent from the prior close and within a longer-term upward trend described at the time.boerse.de That historical data point, while dated, illustrates how secondary listings can provide liquidity for international investors alongside the primary Tokyo quotation.

The current Tokyo price, intraday change and 52-week range are not fully detailed in the week-filtered sources for September 19, 2026, but the article from Simply Wall St references a one-year stock price chart and discusses fair-value estimates that imply a potential 24 percent upside from the current price and, in one alternative view, as much as 68 percent downside. For investors, these valuation spreads underline that Rohm stock trades in a range where execution on the Wide-SOA roadmap and demand stabilization could materially shift sentiment over the coming years.

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