Partsearch is unique semiconductor parametric search engine which allows you search operational amplifiers, voltage references and other semiconductor devices by their parameters.
Parameters can be supplied in unit form ie 27mA or for offset 3mV. Search engine takes "3 mA" or "3mA". It does not matter. Note that most of devices has not all parameters set. If you put into query such parameter, device without this parameter is not shown. Info about parameters can be found at Parameters matrix page.