Are there any identical parts on the board that are still OK? If yes, measure the forward drop. Statistically there's a good chance this diode is a plain old Schottky diode, which will measure something like 250~350mV forward drop.
It would help to know how the diode (that's what it almost certainly is) is connected to its surroundings; particularly which pin it connects to on the adjacent IC.
One more thing - how did you fry it? I.e., how likely is it you fried some other components as well...?