I have an electronmechanical system with a PCB that has the BC548 transistor. The system has been failing to perform accordingly and after a long process of troubleshooting I have come to note that there is a problem with the PCB board attached to it. Using a multimeter I have tried to check on the performance of the components on the board and all the components are still functional axcept the BC548 transistor. In my store I dont have the BCC548 transistor but I still want to replace it. Any one of you who can sugest the BC548 equivallent for me?