Rohm SCT4013DLL 750 V SiC MOSFET: AI-ready power device for modern data centers

Rohm's SCT4013DLL 750 V SiC MOSFET targets high-efficiency, high-voltage power stages in AI server battery backup units and industrial systems, combining low loss, compact packaging and robust reliability for demanding data center and power applications.

Responsible: ad hoc news Lifestyle & Consumer Desk. Reviewed prior to publication on June 12, 2026 at 3:53 PM ET. Details in the imprint.

Rohm's SCT4013DLL is a 750 V silicon carbide (SiC) MOSFET that has been selected for use in battery backup units in AI server power supplies, highlighting how far specialist power semiconductors have moved into the heart of modern data centers. The device sits in the high-voltage section of a +400 V / -400 V architecture, where efficiency, thermal behavior and reliability are critical for AI workloads that run 24/7. For engineers specifying power components in next-generation server racks, EV chargers or industrial drives, this discrete MOSFET shows how SiC can deliver lower losses and more compact designs than many traditional silicon solutions.

What the SCT4013DLL 750 V SiC MOSFET is designed to do

The SCT4013DLL is a high-voltage, fast-switching power transistor built on silicon carbide technology and aimed at applications that require efficient conversion of several hundred volts of DC, such as server battery backup units (BBUs), high-density power supplies, and industrial converters. According to a technical report on its deployment in an AI server BBU, the device is implemented in the main power stage of a high-voltage DC system that operates around +400 V and -400 V rails, helping to provide a stable and efficient bridge between the battery pack and the server load. SiC MOSFETs like this Rohm device typically enable higher switching frequencies and lower conduction losses than comparable silicon insulated-gate bipolar transistors (IGBTs), which can reduce the size of magnetics and cooling hardware in constrained rack environments.

In practice, the SCT4013DLL is intended for hard-switching topologies such as full-bridge or half-bridge converters that step DC voltages up or down, for example when conditioning power to and from high-voltage battery strings in data centers. Because the device is specified for 750 V, it provides headroom over the nominal 800 V-class DC bus levels used in many emerging data center and industrial HVDC systems, supporting surge handling and safety margins in line with typical design standards. That high breakdown voltage allows engineers to accommodate line and load transients while maintaining the thermal and electrical performance needed to meet efficiency targets and energy regulations. For projects that involve energy storage, uninterruptible power supplies, or DC fast chargers, the same design principles transfer directly: a high-voltage SiC MOSFET in the main switching leg can substantially improve system efficiency at high load.

Rohm positions its 750 V SiC family, which includes the SCT4013DLL, for use cases where both efficiency and compactness are central design goals, such as AI server racks and telecom equipment that increasingly adopt high-voltage DC distribution instead of traditional AC architectures. In that AI server BBU example, the device operates in a topology that uses a +400 V / -400 V DC link, making more effective use of cabling and reducing current levels compared with lower-voltage designs at the same power rating. Lower current in turn reduces I2R losses and allows the use of smaller conductors and busbars, all of which complement the intrinsic low-loss characteristics of a SiC MOSFET. For OEMs trying to hit aggressive efficiency metrics at multi-kilowatt levels in limited rack space, these gains add up directly in power usage effectiveness (PUE) and operating expense.

Thermally, the SCT4013DLL benefits from SiC’s higher thermal conductivity and ability to operate at elevated junction temperatures relative to many silicon parts, which gives designers some flexibility in heat sink sizing and airflow planning. In dense server enclosures where every cubic inch counts, the ability to use smaller or fewer heat sinks without sacrificing device reliability can be as important as raw conduction loss figures. While Rohm’s public documentation groups the SCT4013DLL in a broader portfolio of SiC MOSFETs that share similar packaging and thermal characteristics, the AI server BBU deployment provides a real-world reference for engineers evaluating whether such a device can survive sustained high-load operation under data center thermal constraints.

On the electrical side, Rohm’s SiC MOSFET design focuses on low on-state resistance and reduced switching losses compared with silicon counterparts at the same voltage rating, which typically translates into higher efficiency especially at high switching frequencies. Using higher switching frequencies enables smaller filter inductors and capacitors, shrinking the overall footprint of the power stage and freeing up space for battery modules or additional compute blades in server racks. For system architects working on multi-rack deployments, these incremental gains influence how much compute capacity can be installed per row while staying within power and cooling budgets defined at the facility level.

How the device fits into Rohm’s portfolio and the broader market

The SCT4013DLL sits in Rohm’s broader line of SiC power devices, which spans MOSFETs and diodes that target automotive, industrial and IT infrastructure customers. By having a 750 V rating and being adopted in an AI server BBU, this device shows that Rohm is not only addressing electric vehicles and solar inverters but also the fast-growing market for AI-ready data centers and high-density enterprise infrastructure. Data center power systems are currently shifting from 12 V and 48 V distribution to higher-voltage DC architectures around 380 V to 800 V, in order to support racks rated well above 30 kW without excessive copper losses, which enhances the attractiveness of SiC devices with ratings above 650 V.

For system designers, one practical consideration is how a device like the SCT4013DLL compares with alternatives in terms of design ecosystem and support. Rohm typically backs its SiC MOSFETs with reference designs, application notes, and simulation models aimed at shortening the evaluation phase for BBUs and other power systems, and the AI server adoption case provides a concrete topology that engineers can study as a starting point. Since high-voltage SiC requires careful attention to gate-drive layout, dv/dt control and EMI filtering, the availability of tested example circuits can reduce the risk of unexpected switching artifacts during late-stage validation. For companies building or upgrading BBU platforms for hyperscale clients, this type of support can accelerate time to market while helping to meet efficiency, compliance and reliability targets negotiated with end customers.

In addition to data centers, the SCT4013DLL’s voltage and power class make it relevant for a range of industrial equipment such as motor drives, power conditioners and high-end uninterruptible power supplies that may not yet be running AI workloads but still require high efficiency and uptime. As more industrial plants adopt IIoT and edge compute nodes, power quality and local backup have become more important, especially where short grid disturbances translate directly into downtime costs. A SiC-based converter using a MOSFET like this can help increase the energy extracted from a given battery capacity during an outage by reducing conversion losses, effectively extending the runtime or allowing a smaller battery pack for the same backup duration.

Compared with silicon IGBTs, a 750 V-class SiC MOSFET typically offers faster turn-on and turn-off, which can reduce switching loss per cycle and in some configurations allow operation at higher frequencies without driving device temperatures beyond acceptable limits. However, SiC components such as the SCT4013DLL do impose stricter requirements on gate drive voltage and layout to avoid overshoot and unwanted oscillations, which is why device vendors and partners tend to publish detailed guidance for PCB layout, gate resistance selection and snubber design. For design houses and OEMs that are just starting to transition to SiC, working with a device already proven in an AI server BBU gives an additional level of confidence that, with proper implementation, the technology can meet demanding uptime and performance criteria in production settings.

From a strategic perspective, Rohm’s success in placing the SCT4013DLL within AI server infrastructure underlines the company’s broader push into segments where efficient high-voltage power conversion is becoming a core differentiator. AI servers have rapidly rising power envelopes, with individual racks reaching and in some cases exceeding 80 kW, and this is driving adoption of HVDC and advanced power topologies that reward components with high efficiency and robust thermal characteristics. As these architectures spread beyond hyperscale operators to enterprise data centers and edge facilities, demand for qualified, field-proven SiC MOSFETs is likely to extend beyond a handful of flagship deployments.

For now, engineers specifying BBUs and other high-voltage power stages in AI or industrial systems can view the SCT4013DLL as an example of how Rohm addresses this demand with a 750 V SiC MOSFET that is already in use inside a power-supply section of a +400 V / -400 V server architecture. Within Rohm’s overall semiconductor business, SiC devices form part of the company’s strategy to serve automotive, industrial and infrastructure customers that prioritize efficiency and power density, complementing its broader catalog of analog, sensor and standard logic components. Shares of Rohm (JP3982800009, ticker 6963) last traded in Tokyo; over-the-counter US instruments reference the same underlying company rather than a primary NYSE or Nasdaq listing.

Rohm SCT4013DLL 750 V SiC MOSFET at a glance

• Product: Rohm SCT4013DLL 750 V SiC MOSFET
• Manufacturer: Rohm
• Category: Lifestyle / consumer power component (high-voltage SiC MOSFET)
• Launch date: Not publicly specified; part of Rohm's 750 V SiC MOSFET family in current production
• MSRP / Price: Varies by distributor and volume; typically quoted per piece for OEM and engineering quantities
• Availability: Available through major semiconductor distributors and Rohm's authorized sales channels, including supply for AI server BBU designs
• Target audience: Power electronics engineers and OEMs designing AI server power supplies, data center BBUs, industrial converters and high-voltage DC systems
• Key feature / USP: 750 V-class SiC MOSFET proven in AI server battery backup units using +400 V / -400 V HVDC architectures

This article was created with a.i. assistance and editorially reviewed. Product information is provided without warranty; prices and availability may change at any time. Not investment advice, not a buy or sell recommendation. Trading in securities carries risks up to the total loss of capital.