Impedans
Impedans Ltd is a Dublin-based specialist in RF and plasma diagnostic sensors, serving semiconductor manufacturers, plasma equipment makers, and research institutions with Langmuir probes, RFEA systems, VI probes, and NIST-traceable RF calibration for in-process plasma measurement and equipment characterization.
- Company typePrivate
- Founded2004
- HeadquartersDublin, Ireland
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Impedans does
Impedans Ltd is a Dublin, Ireland-based specialist in RF and plasma diagnostic instrumentation, founded in 2004 with the stated vision of placing intelligent sensors on every plasma processing tool. The company designs and manufactures hardware that characterizes plasma processes in real time for semiconductor device manufacturers, plasma equipment makers (including Applied Materials and Oxford Instruments), universities, research institutes, sub-system suppliers, and adjacent industries such as vacuum coating, solar, aerospace, military, and medical devices. Its headquarters sit at Chase House, City Junction Business Park, Northern Cross, Dublin D17AK63, with global sales reach across the United States, Europe, and Asia.
The product portfolio spans four categories: bulk plasma measurement (Langmuir Probe and the deposition-tolerant Plato Probe); substrate-level measurement (Semion RFEA, Semion pDC, Semion 3keV, and Quantum RFEA & QCM combining retarding field analysis with quartz crystal microbalance); RF voltage-current probes (Octiv Mono 2.0, Octiv Poly 2.0, Octiv Suite 2.0, and the Moduli RF Spectrometer); and RF event detectors (Alfven and Moduli RF Event Detector for arc detection and categorization). The technical anchor is the Lab RFx calibration laboratory, an in-house facility using proprietary NIST-traceable calibration techniques for RF calorimetric power and impedance standards that enables 1% measurement accuracy over the widest VSWR range commercially available. Products ship with bundled configuration and visualization software and expose RS232, USB, Ethernet, and EtherCAT interfaces for fab-side integration; a credentials of more than 100 peer-reviewed publications using Impedans instruments and five consecutive Deloitte Technology Fast 50 Ireland rankings support scientific credibility.
Commercially, Impedans sells hardware and bundled calibration services (Lab RFx) through direct enterprise field sales, with an OEM sub-system channel via integration into equipment makers' tools. The investor base has included SOSV (multi-round from 2015 through 2022) and Enterprise Ireland (2022 round of approximately US$3.58M), with SOSV partner Bill Liao serving as investor director. Named customers include Applied Materials (Semion RFEA integrated into AMAT AdvantEdge and Centura DPS tools), an unnamed NASDAQ-listed memory fab using Octiv VI for production scrap reduction, HDD manufacturers using plasma etch/ash/deposition monitoring, and ICARE CNRS for plasma thruster and fusion research. In 2025, Applied Materials acquired Impedans; the brand continues during integration and the website indicates products and services are no longer offered for sale as the business is folded into the AMAT equipment platform.
Impedans firmographics
Firmographics- Name
- Impedans
- Legal name
- Impedans Ltd
- Website
- https://impedans.com
- Company type
- Private
- Founded year
- 2004
- Operating status
- Acquired
- Headcount range
- 11–50 employees
- Short description
- Impedans Ltd is a Dublin-based specialist in RF and plasma diagnostic sensors, serving semiconductor manufacturers, plasma equipment makers, and research institutions with Langmuir probes, RFEA systems, VI probes, and NIST-traceable RF calibration for in-process plasma measurement and equipment characterization.
- Ownership category
- akta.pro rank
Impedans industry classification
Industry- Product category
- Plasma Measurement and RF Diagnostic Instrumentation
- NAICS
- Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)
- SIC
- Instruments For Meas & Testing Of Electricity & Elec Signals (3825)
- akta.pro primary industry
- Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)
- akta.pro secondary industry
- Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity) (IMAGAFAE)
Keywords
Where Impedans is headquartered
LocationHeadquarters
- HQ city
- Dublin
- HQ country
- Ireland
- HQ region
- Europe
Offices1 record
Markets served
Impedans business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Technology or R&D, Supply Chain, Operations, Marketing or Sales
Revenue model
- Plasma Measurement Instruments: Sale of specialized plasma diagnostic equipment including Langmuir probes, RFEA systems, RF VI probes, and related sensors. Products are sold directly to semiconductor manufacturers, research institutions, and equipment makers for R&D, process development, live process monitoring, and equipment maintenance applications.
- RF Calibration Services: Advanced calibration laboratory services (Lab RFx) providing RF power and impedance calibration for the company's sensor range and potentially third-party equipment. Uses proprietary calibration techniques and NIST-traceable standards.
- Software and Support: Intuitive software bundled with hardware products, plus customer support services. Software enables sensor configuration, live data visualization, and data import/export for analysis.
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Impedans product offering
Product offeringCore offering
Impedans designs, manufactures, and sells specialized plasma measurement instruments and RF diagnostic sensors used in semiconductor manufacturing, plasma equipment development, and plasma physics research. Its portfolio includes Langmuir probes for bulk plasma measurement, Retarding Field Energy Analyzers (Semion RFEA family) for substrate-level ion energy measurement, RF voltage-current probes (Octiv family) for RF power and impedance characterization, and RF event/arc detectors (Alfven, Moduli RF Event Detector). The company also operates Lab RFx, an in-house RF calibration laboratory providing NIST-traceable calibration for its sensor range.
Product overview
Impedans offers a comprehensive suite of plasma measurement solutions organized into four main product categories: Bulk Plasma Measurement (Langmuir Probe and Plato Probe for measuring fundamental plasma parameters), Substrate Level Measurement (Semion RFEA, Semion pDC, Semion 3keV, and Quantum RFEA & QCM for ion energy and ion flux characterization), RF Voltage-Current Probes (Octiv Mono 2.0, Octiv Poly 2.0, Octiv Suite 2.0, and Moduli RF Spectrometer for RF power and impedance measurement), and RF Event Detectors (Alfven and Moduli RF Event Detector for arc detection). The company also operates Lab RFx, an advanced calibration laboratory for their sensors. All products are supported by intuitive software for configuration, data visualization, and multi-sensor control.
Differentiator
Problem solved
Functional benefit
Brands
- Lab RFx: Advanced RF calibration laboratory that houses RF calorimetric power standard and RF impedance standard for calibrating high-precision power, impedance and voltage/current sensors
Products and services
- Langmuir Probe The Langmuir Probe is a standard plasma diagnostic that measures bulk plasma parameters including electron temperature, ion density, plasma potential, and electron energy distribution function. It is widely used in academic and industrial plasma research and process development.
- Plato Probe
Quantifiable outcome
- Impedans diagnostics have a proven track record of scrap reduction in semiconductor and HDD industries
- +2 more outcomes
Companies that use Impedans
Customer profileNamed customers5 records
Segments6 records
Ideal customer profiles4 records
Impedans technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
Feature6 records
Impedans partnerships and signals
Strategic signalScale indicators3 records
Recent moves5 records
Expansion highlights5 records
Impedans competitors and assessment
Company assessmentRegional players
- Plasma-Therm: Plasma-Therm is a US-based plasma processing equipment maker (etching, deposition) whose tools integrate plasma diagnostic sensors. While a customer of plasma measurement technology rather than a direct diagnostic OEM, its installed base overlaps Impedans' end-market.
Direct peers
- Hiden Analytical: Hiden Analytical is a UK-based manufacturer of plasma diagnostic instruments including Langmuir probes, RFEA systems, and quadrupole mass spectrometers. It is Impedans' closest direct competitor in plasma diagnostics for semiconductor and research applications.
- Scientific Systems (SSi): Scientific Systems Inc. manufactures Langmuir probes and plasma diagnostic instrumentation widely used in semiconductor and plasma research. It directly competes with Impedans in single- and double-Langmuir probe products for laboratory and process applications.
Broad incumbents
- INFICON: INFICON manufactures vacuum measurement, gas analysis, and leak detection instruments for semiconductor and industrial markets. It is an incumbent in plasma chamber monitoring and overlaps with Impedans' process diagnostic applications, particularly in vacuum-coating and semiconductor production environments.
- Advanced Energy: Advanced Energy is a major supplier of RF power delivery and plasma control subsystems for semiconductor and industrial plasma applications. It competes with Impedans in RF power sensing and plasma matching networks, though as part of a much larger power electronics portfolio.
- Lam Research: Lam Research is one of the largest semiconductor plasma etch and deposition equipment makers and is a major buyer and integrator of plasma diagnostic sensors. While not a diagnostic OEM, its process control stack represents both a customer channel and a potential internal competitor to Impedans' sensor IP.
- MKS Instruments: MKS Instruments supplies RF power systems, plasma sensing, and process monitoring solutions to the semiconductor equipment industry. It overlaps with Impedans in RF power measurement and plasma process instrumentation but operates at much larger scale across a broader portfolio.
- HORIBA Scientific: HORIBA Scientific manufactures analytical and scientific instrumentation including plasma diagnostic tools used in research and thin-film applications. It is an incumbent in plasma characterization, particularly in academic and materials research settings.
- Oxford Instruments: Oxford Instruments is a major plasma processing equipment manufacturer whose tools (used by Impedans customers) integrate plasma diagnostics. While primarily an equipment OEM, Oxford's plasma technology division offers process monitoring capabilities adjacent to Impedans' measurement products.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Impedans social profiles
Digital presenceImpedans financial estimates
Financial estimateRevenue estimate
Valuation estimate
Impedans leadership team
Management profileNumber of profiles
Profiles3 records
Impedans funding detail
Funding detailFunding overview
Funding rounds3 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Impedans M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Impedans
What does Impedans do?
Impedans designs, manufactures, and sells specialized plasma measurement instruments and RF diagnostic sensors used in semiconductor manufacturing, plasma equipment development, and plasma physics research. Its portfolio includes Langmuir probes for bulk plasma measurement, Retarding Field Energy Analyzers (Semion RFEA family) for substrate-level ion energy measurement, RF voltage-current probes (Octiv family) for RF power and impedance characterization, and RF event/arc detectors (Alfven, Moduli RF Event Detector). The company also operates Lab RFx, an in-house RF calibration laboratory providing NIST-traceable calibration for its sensor range.
Is Impedans a public or private company?
Impedans is a private company. It is classified as corporate owned and is currently acquired.
When was Impedans founded?
Impedans was founded in 2004. It employs 11 to 50 people.
Where is Impedans based?
Impedans is headquartered in Dublin, Ireland, in the Europe region.
How does Impedans make money?
Three revenue lines are on record. Plasma Measurement Instruments are the primary driver. The others are RF Calibration Services and software and Support.
Who are Impedans's main competitors?
Plasma-Therm is listed as a regional player. Direct peers are Hiden Analytical and Scientific Systems (SSi). Broad incumbents are INFICON, Advanced Energy, Lam Research, MKS Instruments, HORIBA Scientific and Oxford Instruments.
Does Impedans have an API?
No public API is recorded for Impedans.
What industry is Impedans in?
Impedans's product category is Plasma Measurement and RF Diagnostic Instrumentation. Its primary akta.pro industry code is IMAGAFAC, Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches), with a secondary code of IMAGAFAE, Process Analytical Instrumentation (Gas analyzers, spectroscopy, pH/ORP, conductivity). Its NAICS code is 334515 and its SIC code is 3825.