Fast-tuning technology for more powerful electronic devices

As a leader in plasma control, Comet Plasma Control Technologies paves the way for innovative semiconductor process technologies.

These technologies revolutionize communication, information, mobility and technological progress and also ensure the sustainable future of our planet and the well-being of our society.

Comet Plasma Control Technologies is a member of the Comet Group.

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Led by experience. Driven by curiosity.


years in business


employees worldwide

locations globally

Connecting the dots between today and an innovative tomorrow

Joeri Durinckx, President Comet PCT

Unified in our goal to drive the evolution of the semiconductor industry, we provide our customers with precise tools to master plasma processes. Our entire team is committed to this mission.

Mission Statement

We empower new technologies.

For more than 60 years we are on a mission to explore the mysteries of plasma behavior with our customers to engineer and manufacture the most advanced RF power systems and diagnostic tools.

Our pioneering milestones and achievements


Comet is founded in Berne, Switzerland by Gerhard Steck as Company for Electronics Tubes Ltd

1960 - 1970

  • Birth of Comet Plasma Control Technologies: Board of Directors decides to diversify into the vacuum capacitor business
  • First serial batch of vacuum capacitors is delivered to a Swiss broadcast customer

1970 - 1980

  • Vacuum capacitors sold to a Japanese semiconductor manufacturer
  • Patented Comet technology allows the implementation of self-centering electrodes and one-shot design

1980 - 1990

  • Comet develops highly efficient water cooling for RF products with current up to 1’000 Arms
  • In 1989, Comet moves into a new building in Berne, Switzerland and doubles its production capacity

1990 - 2000

  • Comet North America opened in Norwalk/CT, USA
  • Patented new technologies are launched: Drive System, Mini-Cap and X-Cap

2000 - 2005

  • Comet enters the RF Impedance Matching Network Business
  • Global headquarters move to Flamatt, Switzerland
  • China subsidary opens

2005 - 2010

  • Silicon Valley location opens
  • Operations start in China
  • Innovative Vacuum capacitor product launches: Integrated drive system, Supra-Con and Drive system

2010 - 2015

  • Entry to RF generator market
  • Korea subsidary opens

2015 - 2025

  • Pathbreaking re-locations
  • Data growth continues: strong technology inflections drive an explosion of data