Description
Product Overview
Keysight positions the B2981C as a femto/picoammeter for low-current and high-resistance measurement. It is part of the B2980C Series Femto/Picoammeters and Electrometers. Model-specific evidence confirms display resolution: 6½ digits, current measurement range: 0.01 fA to 20 mA, minimum current range: 2 pA, maximum acquisition speed: 20,000 readings/s, and display: 4.3-inch color LCD, supporting engineering work such as materials research and semiconductor and sensor characterization. Exact options, interfaces, accessories, calibration scope, and regional availability depend on the ordered configuration and should be confirmed before purchase.
Key Features
- Display resolution: 6½ digits.
- Current measurement range: 0.01 fA to 20 mA.
- Minimum current range: 2 pA.
- Maximum acquisition speed: 20,000 readings/s.
- Display: 4.3-inch color LCD.
- Communication interface: LAN, USB, GPIB.
Technical Specifications
| display resolution | 6½ digits |
|---|---|
| Current measurement range | 0.01 fA to 20 mA |
| Minimum current range | 2 pA |
| Maximum acquisition speed | 20,000 readings/s |
| Display | 4.3-inch color LCD |
| Communication interface | LAN, USB, GPIB |
| battery powered | Not supported |
Typical Applications
- Low-current and high-resistance measurement
- Materials research
- Semiconductor and sensor characterization
Selection Notes
The first configuration checks for the Keysight B2981C are display resolution (6½ digits) and current measurement range (0.01 fA to 20 mA). For a complete selection, check the current, charge, voltage and resistance ranges, input burden, noise floor, guarding, cabling, and fixture requirements. Confirm regional availability, calibration scope, included items, and delivery requirements before ordering.
Frequently Asked Questions
What is the Keysight B2981C?
The Keysight B2981C is a femto/picoammeter intended for professional test and measurement applications.
What are key specifications of the B2981C?
Key verified specifications include display resolution: 6½ digits and current measurement range: 0.01 fA to 20 mA. Review the full table for model-specific details.
How should I specify the Keysight B2981C for quotation?
State the measurement requirement, selected options, quantity, destination, and calibration or accessory needs. Hoyu Instruments will use those details to confirm the configuration before quoting.




