ROHM Semiconductor has unveiled a new lineup of 600V Super Junction MOSFETs, introducing the R60xxXNx and R60xxWNx series. Engineered to meet the strict efficiency and footprint constraints of next-generation power infrastructure, the expanding product families deliver enhanced thermal management and lower power losses for space-constrained industrial systems.
Hyperscale data centers and modern industrial facilities are facing unprecedented power demands driven by accelerating AI processing loads. This power surge intensifies the pressure on hardware engineering teams to elevate energy conversion efficiencies, lower localized heat generation, and maximize power density. Concurrently, system form factors are shrinking, requiring power supply circuits to deliver higher outputs within restricted board areas.
To address these compounding engineering hurdles, high-voltage switching components must reduce operational losses and minimize internal thermal resistance. This has triggered a industry-wide migration toward high-thermal-performance surface-mount device (SMD) packages. Furthermore, global supply chain volatility has made dual-sourcing and risk-mitigation standard operational mandates, positioning standard footprint compatibility as a primary consideration for electronic component selection.
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Low-Profile SMD Packaging for AI Servers and Heavy Industry
The newly developed components-comprising the standard high-speed R60xxXNx series and the PrestoMOS™ R60xxWNx series-broaden ROHM‘s existing silicon portfolio by incorporating two optimized surface-mount package form factors:
DFN8080-5L: A highly compact, low-profile footprint measuring 8.0 mm × 8.0 mm × 0.85 mm.
TOLL (TO-Leadless): A ruggedized, low-parasitic package configuration measuring 11.68 mm × 9.9 mm × 2.3 mm.
Featuring miniature cross-sections and minimal package inductances, these additions are tailored for high-frequency switching environments that mandate reduced board space and elevated power concentration metrics, such as primary-side power units for AI servers, telecom rectifiers, and industrial charging systems.
Enhanced Admittance and Multi-Source Component Compatibility
From an electrical performance standpoint, the series features a normalized gate threshold voltage ($V_{GS(th)}$) calibrated within a 3V to 5V window. This design selection guarantees native compatibility with standard gate drivers and digital controllers already pervasive across the power electronics sector.
Additionally, ROHM has optimized the internal cell design to deliver superior transfer admittance characteristics compared to its legacy R60xxYNx and PrestoMOS™ R60xxVNx product families. This heightened sensitivity to gate control yields faster turn-on times and noticeably lower dynamic switching losses. By adhering strictly to established, market-standard packaging footprints, these MOSFETs serve as seamless drop-in replacements within pre-existing power layouts, simplifying qualification processes for alternative second-sources.
The combined 32-variant product matrix allows circuit engineers to select hardware optimized for their exact design goals, balancing absolute compatibility against maximum thermal efficiency.
Mass production of the new 600V Super Junction MOSFET lineup commenced sequentially in June 2026. Selected TOLL package variants-including part numbers R6020XNJ2, R6038XNJ2, R6049XNJ2, R6055XNJ2, R6024WNJ2, and R6035WNJ2-have entered commercial distribution networks and are available for immediate purchase through online component suppliers such as DigiKey. Moving forward, ROHM plans to scale its high-voltage power portfolio further with the upcoming deployment of 650V architectures and next-generation silicon platforms.