GaN FETs

Higher switching frequency, lower losses, and more compact power stages are driving broader adoption of GaN FETs in modern power electronics. For design teams working on efficient converters, fast chargers, industrial power supplies, or space-constrained systems, this device category offers a practical path to improved power density without moving away from familiar transistor-based design principles.

On this page, you can explore Gallium Nitride field-effect transistors suited to different voltage, current, package, and application requirements. The range includes surface-mount options from established semiconductor manufacturers, making it easier to compare devices for new designs, prototyping, or qualification workflows.

Why GaN devices are used in power switching

Gallium Nitride is widely used in high-efficiency switching applications because it supports fast transitions and low switching losses compared with conventional silicon approaches in many designs. In practical terms, this can help engineers reduce heat, shrink magnetic components, and improve overall converter performance when the surrounding gate drive, layout, and thermal design are properly optimized.

GaN FETs are often selected for power conversion stages where switching speed and efficiency matter as much as raw current handling. Typical use cases include AC-DC and DC-DC conversion, telecom and data infrastructure power stages, industrial supplies, motor-related subsystems, and compact power architectures where board space is limited.

What to look for when selecting GaN FETs

Choosing the right part starts with the electrical demands of the switching stage. Key parameters usually include drain-source voltage, continuous drain current, on-state resistance, package style, mounting format, and gate charge. These values affect conduction loss, switching behavior, thermal performance, and PCB layout decisions.

For example, higher-voltage designs may call for 400 V, 600 V, or 650 V class devices, while lower-voltage applications can prioritize very low resistance and fast switching behavior. Engineers should also consider package construction, assembly process, and parasitic management, especially in fast-switching layouts where loop inductance has a direct effect on performance and EMI.

Representative products in this category

This category includes several notable devices from manufacturers such as Renesas Electronics, Infineon, Nexperia, and STMicroelectronics. Examples include the Renesas Electronics ISL70024SEHML and ISL70023SEHML GaN FETs, along with radiation-hardened variants such as ISL73024SEHML and ISL73023SEHML for designs that require that type of component qualification context.

For higher-voltage switching applications, examples in the range include the Infineon IGT40R070D1E8220ATMA1, the STMicroelectronics SGT65R65AL, and the Nexperia GAN039-650NBB. These parts illustrate the breadth of the category, from compact surface-mount GaN devices to options aimed at demanding power conversion requirements.

Manufacturer coverage and sourcing flexibility

Availability across multiple semiconductor suppliers can be important for engineering teams balancing performance, lifecycle planning, and procurement strategy. This category prioritizes established manufacturers including Infineon, Nexperia, Renesas Electronics, and STMicroelectronics, with product selections that support both evaluation and production purchasing.

Even when devices appear similar at a high level, differences in package type, electrical characteristics, and intended application profile can be significant. Reviewing parts by manufacturer can therefore help narrow choices based on preferred ecosystems, internal qualification standards, or familiarity with a specific supplier’s power portfolio.

How GaN FETs compare with other transistor technologies

Not every switching application automatically points to GaN. Device selection still depends on voltage range, switching frequency, thermal constraints, cost targets, and control strategy. In some systems, engineers may compare GaN devices with conventional MOSFET-based approaches or with IGBTs for higher-power conversion stages where operating conditions differ.

Within the broader transistor landscape, GaN FETs are generally considered when switching speed and efficiency are central to the design objective. For signal switching or current amplification roles, other transistor families such as bipolar transistors may be more appropriate. Understanding the intended role of the device helps prevent overdesign and improves component selection accuracy.

Application areas where this category is especially relevant

Power conversion remains the strongest fit for this category. Designers working on high-frequency DC-DC converters, compact AC-DC supplies, battery-powered equipment, industrial control hardware, and advanced charging systems often evaluate GaN FETs to improve efficiency and reduce passive component size.

Some of the listed Renesas Electronics parts also point to specialized environments, including radiation-hardened use cases. That makes this category relevant not only for mainstream industrial electronics but also for projects with stricter environmental or mission-related constraints, where package format and device qualification context matter as much as core switching performance.

Practical considerations before ordering

Before selecting a device, it helps to define the operating voltage margin, switching frequency, thermal path, and gate drive compatibility of the design. GaN devices can deliver strong performance benefits, but they also place greater emphasis on careful PCB layout, control of parasitics, and proper measurement methods during validation.

For procurement teams, comparing package style, surface-mount assembly requirements, and manufacturer preference can simplify the shortlist. For engineering teams, reviewing a few representative parts in parallel is often the most effective way to align electrical performance with manufacturability and long-term supply needs.

Find the right GaN FET for your design

This GaN FETs category is designed to support both technical evaluation and straightforward B2B sourcing. Whether you are looking for compact surface-mount parts for efficient switching stages or reviewing higher-voltage devices for demanding power designs, the available range provides a focused starting point for specification-driven selection.

By comparing core electrical characteristics, package formats, and manufacturer options in context, it becomes easier to identify a device that fits your application rather than simply choosing by headline ratings. If your design priorities center on switching efficiency, power density, and modern converter performance, this category is a strong place to begin.