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European Chips Found in Russian Drones Amid Global Sanctions

WireByte Staff · July 11, 2026

STMicroelectronics' STM32 microcontrollers have been discovered in thousands of Russian drones, defying international sanctions. The Swiss-designed chips, manufactured in Europe, have been sourced through Chinese trade networks, making it difficult to track dual-use technology. Ukraine's military intelligence has recovered over 270 STMicroelectronics parts from downed drones and missiles, highlighting the complex global supply chain.

Key points

  • STMicroelectronics' STM32 microcontrollers have been found in over 270 Russian drones and missiles, according to Ukraine's military intelligence.
  • The Swiss-designed chips are manufactured in Europe but have been sourced through Chinese trade networks, including Avnet and Shenzhen Hobbywing Technology.
  • Avnet's Hong Kong subsidiary sold $1.95 million worth of STM32 chips to Hobbywing in 2025, a significant increase from $400,000 in 2024.
  • Hobbywing then sells electronic speed controllers built with the chips to Nanchang Sanrui Intelligence Technology, which has purchased over $7 million worth of controllers in the first half of 2025.
  • The discovery has raised concerns about the global supply chain and the ability to track dual-use technology, with Ukraine's military intelligence calling for increased vigilance.

The discovery of STMicroelectronics' STM32 microcontrollers in thousands of Russian drones has raised concerns about the global supply chain and the ability to track dual-use technology. The Swiss-designed chips, manufactured in Europe, have been sourced through Chinese trade networks, including Avnet and Shenzhen Hobbywing Technology.

The complex supply chain has made it difficult to track the origin of the chips, with Ukraine's military intelligence recovering over 270 STMicroelectronics parts from downed drones and missiles. The parts were sourced through Avnet's Hong Kong subsidiary, which sold $1.95 million worth of STM32 chips to Hobbywing in 2025, a significant increase from $400,000 in 2024.

Hobbywing then sells electronic speed controllers built with the chips to Nanchang Sanrui Intelligence Technology, which has purchased over $7 million worth of controllers in the first half of 2025. The discovery has raised concerns about the global supply chain and the ability to track dual-use technology, with Ukraine's military intelligence calling for increased vigilance.

The situation highlights the need for stricter regulations and monitoring of global trade networks to prevent the proliferation of dual-use technology. As the conflict in Ukraine continues, the discovery of STMicroelectronics' STM32 microcontrollers in Russian drones serves as a reminder of the complex and often opaque nature of global supply chains.

Sources

WireByte Staff — Editorial Team

The WireByte editorial team synthesises technology news from multiple primary sources, verifies the facts, and links every source. Articles are produced with AI assistance and reviewed under our editorial policy.