E4990A
Model:
E4990A
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Impedance Analyzers High-performance benchtop impedance analyzers
Model: E4990AKeysight ZA5-class impedance analyzers include the E4990A Series
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- Overview
- Options
- Accessories
- Software
- Support
120 MHz
The E4990A Impedance Analyzer offers industry best 0.045% (typical) basic accuracy for component, semiconductor and materials measurement. Learn more!
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Type
Impedance Analyzer
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Maximum frequency
120 MHz
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Target DUT
General-purpose device, Material
Top configurations
See what's included, and how you can upgrade your experience with Keysight.
Highlights
Whether your application is in R&D, production, quality assurance, or incoming inspection, we take pride in contributing to your success. We strive to deliver complete solutions to meet your needs, from impedance analyzers to a wide variety of test accessories. Achieve success with Keysight’s impedance measurement solutions.
- Five upgradable frequency options; 20 Hz to 10/20/30/50/120 MHz
- Basic impedance measurement accuracy of ±0.08% (±0.045%, typ)
- 25 mΩ to 40 MΩ wide impedance measurement range (10% measurement accuracy range)
- Measurement parameters: |Z|, |Y|, θ, R, X, G, B, L, C, D, Q, Complex Z, Complex Y, Vac, Iac, Vdc, Idc
- Built-in DC bias range: 0 V to ±40 V, 0 A to ±100 mA
- Enhanced measurement speed option (option 001, for 10M/20M/30M/50M options only)
- 4-channel and 4-trace on 10.4-inch color LCD with touch screen
- Data analysis function: Equivalent circuit analysis, limit line test
Services and support
Innovate at speed with curated support plans and prioritized response and turn-around times.
Get predictable, lease-based subscriptions and full lifecycle management solutions—so you reach your business goals faster.
Experience elevated service as a KeysightCare subscriber to get committed technical response and more.
Ensure your test system performs to specification and meets local and global standards.
Make measurements quickly with in-house, instructor-led training, and eLearning.
Download Keysight software or update your software to the newest version.
Frequently Asked Questions
The Keysight E4990A Impedance Analyzer characterizes dielectric and magnetic materials from 20 Hz to 120 MHz. It offers precise control of the test signal, so you can evaluate materials under the conditions that matter to your application.
Frequency range
- Range: 20 Hz to 10, 20, 30, 50 or 120 MHz (five frequency options, upgradable)
- Resolution: 1 mHz
- Materials measurement: dielectric and magnetic materials up to 120 MHz with the appropriate test fixtures
Test signal level
- AC voltage: 5 mVrms to 1 Vrms, with 1 mV resolution
- AC current: 200 µArms to 20 mArms, with 20 µA resolution
- Low-impedance measurements: for impedances of 50 Ω or less, keep the test signal at or below 0.5 Vrms or 20 mArms
DC bias
- Built-in DC bias: 0 V to ±40 V and 0 A to ±100 mA, for evaluating materials and components under bias conditions
Measurement performance
- Basic accuracy: ±0.08% (±0.045% typical)
- Impedance range: 25 mΩ to 40 MΩ (10% accuracy range)
Fixtures and software for materials measurement
Pair the E4990A with the N15005A and N15006A material software, which replace the former N1500A Options 005 and 006, respectively, and Keysight material test fixtures, such as the 16451B dielectric test fixture and the 16454A magnetic material test fixture. The software includes calibration, limit testing, and report generation functions, and runs on the E4990A or an external PC.
From low-frequency dielectric evaluation to magnetic material characterization at 120 MHz, the E4990A combines wide frequency coverage, flexible test signal control, and built-in DC bias in a single instrument.
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