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AC / DC Current Source, Ultra Sensitive, 4-Quadrant, 11W, Refurbished


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Manufacturer Part No:
Newark Part No.:
Product Range
6200 Series Current SourceMeter
Technical Datasheet:
6221-REFURB   Datasheet
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6200 Series Current SourceMeter


Current Source



± 2nA to ± 100mA


1 Year

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Technical Documents (1)

Product Overview

6221-REFURB is an AC and DC current source. It combines ease of use with exceptionally low current noise. Low current sourcing is critical to applications in test environments ranging from R&D to production, especially in the semiconductor, nanotechnology and superconductor industries. High sourcing accuracy and built-in control functions make the model 6221 ideal for applications like hall measurements, resistance measurements using delta mode, pulsed measurements and differential conductance measurements. This current source is fully programmable via the front panel controls or from an external controller via RS232 or GPIB interfaces. The model 6221 also features an Ethernet interface for remote control from anywhere there’s an Ethernet connection. It can source DC currents from 100fA to 105mA and AC currents from 4pA to 210mA peak to peak. The output voltage compliance of either source can be set from 0.1V to 105V in 10mV steps.
  • Considered "Used" condition, this open-box product has been verified to be in like new working order
  • Near new condition, with all original accessories showing only slight signs of handling
  • 10^14ohm output impedance ensures stable current sourcing into variable loads
  • 65000-point source memory allows executing comprehensive test current sweeps from current source
  • 2nA to 100mA current measurement, built-in RS-232, GPIB, trigger link and digital I/O interfaces
  • Reconfigurable triax output simplifies matching the application’s guarding requirements
  • Built-in standard and arbitrary waveform generators with 1mHz to 100KHz frequency range
  • Programmable pulse widths as short as 5µs, limiting power dissipation in delicate components
  • Supports pulsed I-V measurements down to 50µs when used with Model 2182A Nanovoltmeter
  • 0 to 50°C operating temperature, 100V to 240Vrms, 50 to 60Hz power supply, 120VA power consumption


6221-REFURB AC and DC current source, 37-AL G-2 low noise input cable with triax to alligator clips, 8501-2 trigger link cable, CA-180-3A Ethernet crossover cable, CA-351 communication cable, CS-1195-2 safety interlock connector, Instruction manual on CD, Getting started manual (hardcopy), Software (downloadable).


To prevent damage to internal fuses of the model 6221, current from output low to earth ground must be limited to 1A.


When handling the model 6221, never touch the heat sink located on the right side of the case. This heat sink could be hot enough to cause burns.

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