B2980B*/C Features & Model Comparison

B2980B*/C Series Femto/Picoammeter & Electrometer

What is it?
A bench-top precision instrument that enables the measurement of ultra-low current and insulation material resistance.

Who needs it?
Education and Research, semiconductor R&D, mass spectroscopy R&D.

Target application/industry?
Material science, Device and electronic components, Precision electronics system (Sensing, Ion beam control, Particle monitoring).

Areas of growth?
Keithley Installed base.

Model Comparison

	B2981B*/C	B2983B*/C	B2985B*/C	B2987B*/C
Type	Femto/Picoammeter	Femto/Picoammeter	Electrometer/ high resistance meter	Electrometer/ high resistance meter
Current measurement range	0.01 fA to 20 mA	0.01 fA to 20 mA	0.01 fA to 20 mA	0.01 fA to 20 mA
Voltage measurement range			1 μV to 20 V	1 μV to 20 V
Max measurable resistance			10 PΩ	10 PΩ
Charge measurement range			1 fC to 2 μC	1 fC to 2 μC
Voltage source range			±1000 V	±1000 V
Temperature measurement			■	■
Battery operation		■		■

Accessories

	Orderable Part Number	Included with Each Model Number as Standard
	Orderable Part Number	B2981B*/C	B2983B*/C	B2985B*/C	B2987B*/C
USB cable	8121-1696	■	■	■	■
Ground connection cable, Banana to screw-lug	B2981-61715	■	■	■	■
Triax cable (1.5 m, 200 V)	N1412A	■	■	■	■
Open cap for Triax connector	N1417A	■	■	■	■
Earthing wire (2m)			■		■
High voltage test leads/Alligator clips	U8201-60001 U3606-60030			■	■
Interlock and humidity prob connector heads				■	■
High resistance meter fixture adapter	N1413A			▲	▲
High resistance measurement adapter	N1414A			▲	▲
Resistivity cell	N1424A/B/C			▲	▲
Low noise test leads & cables (1.5/3 m)	N1425A/B & N1427A/B			▲	▲

■ Standard ▲ Optional

Data Sheet: 3120-1574EN
www.keysight.com/find/precisionmeasure

Key Features

2 pA to 20 mA ranges, 1000 V source ensure accurate measurements

Battery operation (B2983/7B* B2983/7C) eliminates AC power noise

Capture transient signal effects with time domain view

Statistical analysis with real-time histograms

Test setup integrity checking function and dedicated accessories ensure maximum accuracy

Qualify

Need high voltage source?	Sell B2985C or B2987C.
Need charge or resistance measurement?	Sell B2985C or B2987C.
Need a battery operation?	Sell B2983C or B2987C.

Calibration & Warranty

R-50C-011-3	3 Year Calibration Plan
R-50C-011-5	5 Year Calibration Plan
R-51B-001-5Z	5 Year Warranty Plan

*B2980B Series Femto/Picoammeter & Electrometer will be discontinued. Last day to order is May 31, 2026. B2980C is the replacement.