I'm quite often taking things apart to salvage the parts and use them in my projects. Right now I'm taking apart an old PC-power supply for a switch-mode lab-supply project.
The power-supply in question is Delta Electronics DPS-460DB A. Below is a picture of the transformer that I've tried to find info about. Essentially what I'm asking is how in the world does one find basic information on transformers, just like other components? This is not the first time I've pulled my hair out after surfing the "deep-web"(not THE deep-web of course) for info about a transformer and scored absolutely zero. Are almost all transformers custom parts and therefore lack a basic, public, datasheet? What's going on here?