The E4990A Impedance Analyzer operates from 20 Hz to 120 MHz with industry-leading 0.045% (typical) basic accuracy across a wide impedance range. It features a built-in 40 V DC bias source and equivalent circuit analysis function supporting seven different multi-parameter models for simulating custom equivalent parameter values.

Five frequency options (20 Hz to 10/20/30/50/120 MHz) and frequency upgrades allow optimal configuration with minimal investment. With Option 001 (enhanced measurement speed), lower-frequency models match the speed of the flagship 120 MHz E4990A, reducing overall test costs for applications requiring multiple measurement points or high-volume device testing.

The E4990A supports comprehensive test accessories for simple, reliable measurements, making it ideal for R&D, QA, and inspection applications involving electronic components, semiconductor devices, and materials.

• Passive components: Impedance measurement of capacitors, inductors, ferrite beads, resistors, transformers, or crystal/ceramic resonators
• Semiconductor components: C-V characteristics analysis of varactor diodes; impedance evaluation of diodes, transistors, amplifiers, or MEMS
• Other components: Impedance evaluation of components on printed circuit boards
• Dielectric material: Permittivity and loss tangent evaluation of plastics, ceramics, and printed circuit boards
• Magnetic material: Permeability and loss tangent evaluation of ferrite, amorphous materials

• One-stop service from manufacture to shipping
• Inquiries related to products or prices replied within 24 hours
• Well-trained, experienced staff fluent in English
• Distributor support for unique designs and current models
• Protection of your sales area, design ideas, and private information