Polaris Semiconductor Flight Hardware Successfully Reaches International Space Station
ALEXANDRIA, VA — November 10, 2025 — Polaris Semiconductor has announced the successful docking of the JAXA HTV-X1 cargo transfer spacecraft with the International Space Station, carrying the company's flight hardware for critical space-based validation testing.
The HTV-X1 launched on October 26, 2025 JST from Japan and completed docking operations on October 29 as scheduled. Polaris Semiconductor's flight hardware, integrated with the Aegis Aerospace MISSE-21 platform, is scheduled to begin operations early next year.
This mission represents a significant milestone for Polaris Semiconductor's switching-free DC power management technology. The company's hardware will demonstrate that high efficiency, compact size, and ultra-low noise power delivery can be achieved simultaneously—even in the harsh environment of space. This capability has traditionally required difficult tradeoffs in conventional power management solutions.
"This is a critical validation step for our technology," the company stated. "The successful deployment of our hardware to the ISS demonstrates the maturity and reliability of our Enhanced Linear Regulator approach for demanding applications."
The flight hardware testing on the MISSE-21 platform will provide valuable data for the application of Polaris Semiconductor's technology in aerospace, defense, and other sensitive electronics applications where efficiency, solution size, environmental resilience, and low noise are critical requirements.
Polaris Semiconductor acknowledged the contributions of key partners in reaching this milestone, including FlashPCB for expert assembly of the flight boards, as well as support from the ISS National Laboratory, the U.S. Department of Defense, and the Virginia Innovation Partnership Corporation (VIPC).
About Polaris Semiconductor
Polaris Semiconductor designs and manufactures advanced DC voltage regulators optimized for ultra-low noise, compact integration, and high efficiency across aerospace, defense, instrumentation, and high-performance computing sectors. Based in Alexandria, VA, the company’s mission is to push the boundaries of what’s possible in analog power design.
More information: www.polarissemiconductor.com
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HTV-X1 moments before successful docking with the ISS. Image courtesy NASA.
