This item is an excellent condition Keithley 6220 Precision DC Current Source Low Noise Ultra Sensitive. Includes standard power cable, NIST traceable certificate of calibration, and 90 day warranty. All pictures are of the actual unit. Will be calibrated to NIST standards upon purchase.


This item comes with a 3 Month (90 day) warranty.  All functions are guaranteed to work or money will be refunded.

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Keithley 6220 Precision DC Current Source 100fA to 100mA - NIST Calibrated

  • The Keithley 6220 DC Current Source Meter 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 6220 ideal for applications like hall measurements, resistance measurements using delta mode, pulsed measurements, and differential conductance measurements.

    Device testing and characterization for today's very small and power-efficient electronics requires sourcing low-current levels, which demands the use of a precision, low-current source. Lower stimulus currents produce lower - and harder to measure - voltages across the device.

    Fully programmable via the front panel controls, or from an external controller via RS-232 or GPIB interfaces. The 6220 can source DC currents from 100fA to 105mA. The output voltage can be set from 0.1V to 105V in 10mV steps. Voltage compliance (which limits the amount of voltage applied when sourcing a current) is critical for applications in which overvoltages could damage the device under test (DUT).

    The 6220 offers tools for defining current ramps and stepping through predefined sequences of up to 65,536 output values using a trigger or a timer; it supports linear, logarithmic, and custom sweeps.

    • DC precision current source
    • Source and sync (programmable load) 100fA to 100mA
    • 1014W output impedance ensures stable current sourcing into variable loads
    • 65000-point source memory allows executing comprehensive test current sweeps directly from the current source
    • Built-in RS-232, GPIB, Trigger Link, and digital I/O interfaces
    • Reconfigurable triax output simplifies matching the application's guarding requirements
    • Model 220 emulation mode eliminates need to reprogram existing applications
    • Applications:
    • Nanotechnology, differential conductance, pulsed sourcing and resistance
    • Optoelectronics, pulsed I-V
    • Measuring resistance with low power
    • Measuring resistance with low noise