Impedans

Impedans Ltd is a Dublin-based plasma diagnostics company founded in 2004, specializing in RF and plasma measurement technology for semiconductor manufacturing and research. The company develops advanced sensors and systems including Langmuir probes, retarding field energy analyzers (RFEA), and RF voltage-current (VI) probes used for plasma density measurement, process control, and equipment maintenance in semiconductor fabrication. Impedans serves universities, research institutes, plasma equipment makers, and semiconductor device manufacturers globally. As of early 2025, the company announced it is no longer offering products and services for sale, with customer support transitioning to Applied Materials.