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Impedance Analyzers offer flexible frequency options.

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June 20, 2014 - Designed for engineers characterizing and evaluating passive electronic components and semiconductor devices, Agilent E4990A features frequency range of 20 Hz to 10/20/30/50/120 MHz and 0.045% basic accuracy, while E4991B offers frequency range of 1–500 MHz or 1 GHz/3 GHz and basic accuracy of 0.65%. E4991B additionally provides material measurement options that include temperature characteristics analysis from -55 to 150°C and direct read function of permittivity and permeability.

Agilent Technologies Introduces Impedance Analyzers with Flexible Frequency Options at Affordable Price

Agilent Technologies, Inc.
5301 Stevens Creek Blvd.
Santa Clara, CA, 95051

Press release date: May 15, 2014

Agilent Technologies Introduces Impedance Analyzers with Flexible Frequency Options at Affordable Price

SANTA CLARA, Calif., -- Agilent Technologies Inc. (NYSE: A) today introduced the Agilent E4990A and E4991B impedance analyzers, specifically designed for R&D, quality assurance and inspection engineers characterizing and evaluating passive electronic components, semiconductor devices and materials. The analyzers provide unparalleled accuracy and the best performance in the industry with flexible frequency options, all at an affordable price.

With the need for lower power consumption and compact equipment on the rise, efficient power converters have become all the more critical, as has knowing the real characteristics of low-loss components during the design phase. Agilent's new impedance analyzers are the only instruments on the market with the measurement accuracy to evaluate components from mohm to Mohm over the 20 Hz to 3 GHz frequency range, and to uncover the real characteristics of high-quality components. The E4990A offers 0.045 percent (typical) basic accuracy over a wide impedance range. The E4991B offers 0.65 percent basic accuracy and features accurate material measurement options that include temperature characteristics analysis from -55°C to 150 °C and direct read function of permittivity and permeability.

The E4990A impedance analyzer has a frequency range of 20 Hz to 10/20/30/50/120 MHz and replaces the industry-standard Agilent 4294A. The E4991B impedance analyzer has a frequency range of 1 MHz to 500 MHz or 1 GHz/3 GHz and replaces the industry-standard E4991A. The analyzers' flexible frequency options allow engineers to select exactly what they need for their application today-with the least amount of investment-and easily upgrade later as the need arises.

Other key features of the analyzers include a compact body that allows them to share desk space with other devices and tools, and a user-friendly interface. The large, 10.4-inch color LCD with touch screen and multiple-setting functions enables users to evaluate many parameters under various conditions at the same time. A sophisticated, equivalent circuit-analysis function supports seven different multi-parameter models and allows users to simulate their own equivalent parameter values for components. The E4990A and E4991B impedance analyzers support a variety of Agilent test accessories, making measurement of different applications simple and reliable.

"The accuracy and analysis functions of our new E4990A and E4991B impedance analyzers far exceed that of currently available, comparable industry-standard instruments, and help engineers achieve real characteristics of high-quality devices, materials and components," said Akira Nukiyama, vice president and general manager of Agilent's Component Test Division. "What's more, their broad frequency options and pricing support a range of test needs. These features expand their reach from passive component measurements to also include low-frequency material measurement and development of higher-frequency DC-DC converters."

U.S. Pricing and Availability

Agilent's new E4990A and E4991B impedance analyzers are available now. Pricing is as follows:

E4990A impedance analyzer:
E4990A-010   20 Hz to 10 MHz   $21,651
E4990A-020   20 Hz to 20 MHz   $24,744
E4990A-030   20 Hz to 30 MHz   $29,899
E4990A-050   20 Hz to 50 MHz   $37,116
E4990A-120   20 Hz to 120 MHz   $47,426

E4991B impedance analyzer:
E4991B-050   1 MHz to 500 MHz   $38,147
E4991B-100   1 MHz to 1 GHz   $48,457
E4991B-300   1 MHz to 3 GHz   $56,705

More information on the E4990A and E4991B impedance analyzers is available at  and More information on Agilent's full line of impedance analyzers is available at

About Agilent Technologies
Agilent Technologies Inc. (NYSE: A) is the world's premier measurement company and a technology leader in chemical analysis, life sciences, diagnostics, electronics and communications. The company's 20,600 employees serve customers in more than 100 countries. Agilent had revenues of $6.8 billion in fiscal 2013. Information about Agilent is available at

On Sept. 19, 2013, Agilent announced plans to separate into two publicly traded companies through a tax-free spinoff of its electronic measurement business. The new company is named Keysight Technologies, Inc. The separation is expected to be completed in early November 2014.


Janet Smith, Agilent Americas
+1 970 679 5397
Twitter: @JSmithAgilent

Sarah Calnan, Europe
+44 (118) 927 5101

Connie Wong, Asia
+852 3197-7818
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