ASTEC /SKC4138

Question

I am looking for this transistor to replace it in a ASTEC 200W power supply with 4 outputs ( PC model). However I have not any information on it and I cannot find it as standard supply from semiconductor manufacturer. It is main the switching power transistor ( two ) that drives the transformer. Any caracteristic or equivalent model of SK C4138 will be helpfull. "SK" seems to be the manufacturer logo. Thank youSent via Deja.com # Before you buy.