Component distributors offer highly detailed search filters where you can input parameters (voltage, current, package type) to find active equivalents for obsolete parts.
ECA vrt-dvd 2012 is an older version of a specialized semiconductor database used by electronics professionals to identify components, find equivalents, and access data sheets. eca vrt dvd 2012 torrent link
Excellent for identifying SMD marking codes, which was one of the primary uses of the original VRT software. eca vrt dvd 2012 torrent link