I used these transistors to repair a Chinese dual output power supply.
The original transistors were Transun. Not sure why, but the Transun transistor can not handle high temperature conditions when using the power supply at higher current levels. I replaced the first transistor with this Toshiba transistor and it handles it easily. I tried the other output with a high current load and that Transun transistor failed. Replaced it with another Toshiba transistor from this supplier and it also works great. The power supply works great and I'm happy with the result. I was worried about counterfeit Toshiba transistors, but these work great!