I need to find a replacement for a Keithley 263 which is obsolete. Recommendations?
The best replacement for the current capability is the Model 6430 source meter. It can source current from 0.1A to 1e-17A.
Link below to the data sheet:
https://www.tek.com/en/products/keithley/low-level-sensitive-and-specialty-instruments/electrometers
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