You know, you really could try to provide us with a better description, or just Google it yourself for ready solutions;
On-Semi MJD44H11
Zetex ZXT849K or ZXT1053AK
ST 2STD1665
Sanyo 2SC5915, 2SC5999, 2SD2198, 2SD2200 or 2SD2201
Rohm 2SD2118 or 2SC5103
(Btw.: C5001 = 2SC5001, the package is called D-pak or SOT-252)
One place to buy these parts is Farnell.