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Real characteristics – achieved only with an impedance analyzer

Only Keysight impedance analyzers provide unparalleled accuracy for component evaluation from mmohm to Mohm, from 5 Hz to 3 GHz. Leverage Keysight's impedance measurement expertise to your lab and achieve real characteristics of high quality components.

  • The E4990A Impedance Analyzer (20 Hz to 120 MHz frequency range) provides industry-best basic accuracy of 0.045% (typical) over a wide impedance range, with a 40-V built-in DC bias source.
  • The E4991B Impedance Analyzer (1 MHz to 3 GHz frequency range) provides basic accuracy of 0.65% over a wide impedance range, with a 40-V built-in DC bias source (Option 001). Material measurement options enable temperature characteristics analysis from -55 °C to 150°C (Option 007) and direct read function of permittivity and permeability (Option 002).
  • The E5061B ENA series network analyzer with option 3L5/005 supports a wide frequency range from 5 Hz to 3 GHz, with basic accuracy of 2% (typical), 40-V built-in DC bias source, network analysis, impedance analysis, and gain/phase analysis capabilities.
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E4990A
E4990A Impedance Analyzer, 20 Hz to 10/20/30/50/120 MHz 
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The E4990A Impedance Analyzer offers industry best 0.045% (typical) basic accuracy for component, semiconductor and materials measurement. Learn more!
E4991B
E4991B Impedance Analyzer, 1 MHz to 500 MHz/1 GHz/3 GHz 
Starting from  
The E4991B Impedance Analyzer offers 0.65% basic accuracy over wide impedance range, material measurement options for temperature characteristics analysis.
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Complete Your Configuration with the Right accessories

Keysight Technologies offers a variety of accessories and test fixture to use with our LCR Meters, Impedance Analyzers, Capacitance Meters and Network Analyzer. Each accessory is designed to ensure highly accurate measurements without degrading the performance of the measurement instrument.

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Featured Resources for the Impedance Analyzers

Brochures 2018.11.22

E4990A Impedance Analyzer 20 Hz to 10/20/30/50/120 MHz

E4990A Impedance Analyzer 20 Hz to 10/20/30/50/120 MHz

This brochure introduces overview and key features of the E4990A Impedance analyzer. The E4990A provide the best performance in the industry and five frequency options (20 Hz to 10/20/30/50/120 MHz).

2018.11.22

Brochures 2018.11.21

E4991B Impedance Analyzer

E4991B Impedance Analyzer

This brochure introduces overview and key features of the E4991B Impedance analyzer. The E4991B provide the best performance in the industry and three frequency options (1 GHz to 500M/1 G/3 GHz).

2018.11.21

Brochures 2018.09.18

E5061B Network Analyzer, 100 kHz to 1.5 GHz/3 GHz, 5 Hz to 3 GHz

E5061B Network Analyzer, 100 kHz to 1.5 GHz/3 GHz, 5 Hz to 3 GHz

This brochure introduces overview of the E5061B network analyzer, including its RF NA options (100 kHz to 1.5/3 GHz), LF-RF NA option (5 Hz to 3 GHz), and impedance analysis option.

2018.09.18

Configuration Guides 2019.10.21

E4990A Impedance Analyzer 20 Hz to 10/20/30/50/120 MHz

E4990A Impedance Analyzer 20 Hz to 10/20/30/50/120 MHz

This is the configuration guide for the E4990A which shows the ordering information.

2019.10.21

Configuration Guides 2019.10.22

E4991B Impedance Analyzer

E4991B Impedance Analyzer

This is the configuration guide for the E4991B which shows the ordering information.

2019.10.22

Configuration Guides 2018.07.31

E5061B ENA Vector Network Analyzer

E5061B ENA Vector Network Analyzer

This literature guides the customers through configuring the E5061B when they plan to purchase it. It contains the information on options, accessories, and services available with the E5061B.

2018.07.31

Technical Overviews 2018.12.09

LCR Meters, Impedance Analyzers and Test Fixtures

LCR Meters, Impedance Analyzers and Test Fixtures

This 13-page, selection guide matches applications to LCR meters, Impedance analyzer, and fixtures contains brief information on products and application literatures.

2018.12.09

Brochures 2017.11.30

Accessories Catalog for Impedance Measurements - Catalog

Accessories Catalog for Impedance Measurements - Catalog

This catalog introduces all the impedance test fixtures that can be used with LCR meters, Resistance Meters, Capacitance Meters, Impedance Analyzers, and Combination analyzers. ADDITIONAL MODELS: 16196A 16196B 16196C 16197A 16064B 16190B 16380A 16380C 42030A 42090A 42091A

2017.11.30

Application Notes 2020.07.10

Impedance Measurement Handbook

Impedance Measurement Handbook

This handbook introduces the basics of impedance measurements using Keysight's LCR meters and impedance analyzers. Learn some great impedance measurement techniques!

2020.07.10

Data Sheets 2022.08.02

E4990A Impedance Analyzer

E4990A Impedance Analyzer

This is the technical specification for the E4990A The E4990A impedance analyzer supports accurate impedance measurement and analysis of a wide variety of electronic.

2022.08.02

Data Sheets 2023.07.02

E4991B Impedance Analyzer

E4991B Impedance Analyzer

This is the data sheet for the E4991B The E4991B impedance analyzer supports accurate impedance measurement and analysis of a wide variety of electronic.

2023.07.02

Data Sheets 2022.05.12

E5061B ENA Vector Network Analyzer

E5061B ENA Vector Network Analyzer

This literature is a data sheet of the E5061B. It describes the technical specifications of the E5061B.

2022.05.12

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