STMicroelectronics launches 700V GaN power semiconductors for AI, industrial, and grid applications

According to STMicroelectronics, the enhancement-mode GaN transistors operate at up to 700 V and support higher-frequency switching topologies that can reduce the size of magnetics and other passive components in power supplies and converters.
June 22, 2026
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GENEVA - STMicroelectronics in Geneva has introduced a family of 700-volt gallium nitride (GaN) power semiconductors designed for high-efficiency power conversion in AI servers, industrial systems, robotics, and smart-grid equipment.

The new devices expand the company's STPOWER PowerGaN portfolio and target applications where designers seek higher power density and lower energy losses than conventional silicon-based MOSFETs can deliver.

According to STMicroelectronics, enhancement-mode GaN transistors operate up to 700 V and enable higher-frequency switching topologies that can reduce the size of magnetics and other passive components in power supplies and converters.

GaN devices offer several advantages over traditional silicon power transistors, including lower conduction and switching losses at high frequencies and zero reverse-recovery charge. These characteristics can help reduce system size, weight, and operating temperature while improving overall power-conversion efficiency.

The initial release includes seven devices with continuous current ratings ranging from 6 A to 29 A and typical on-resistance values from 53 mΩ to 270 mΩ.

The highest-current device, the SGT080R70ILB, is rated for 29 A with a typical RDS(on) of 60 mΩ, while the SGT070R70HTO is rated for 26 A with a typical RDS(on) of 53 mΩ.

The devices are offered in DPAK, TO-LL, and PowerFLAT surface-mount packages. ST said the TO-LL and PowerFLAT versions include Kelvin-source connections that improve noise immunity and help maintain gate-drive timing integrity in high-speed switching applications.

The company said the new GaN transistors can be used as replacements for silicon MOSFETs in existing power-conversion circuits or enable new high-frequency converter architectures for applications including AI server power supplies, industrial power systems, robotics, energy-storage systems, and smart-grid infrastructure.

STMicroelectronics said it plans to continue expanding the PowerGaN portfolio with additional voltage ratings and features.

For more information, please visit https://www.st.com.