Introduction to BC557, bc557 pinout, bc557 power ratings, bc557 applications Departments:Electrical EngineeringElectronics EngineeringMechatronics EngineeringComponents:BC557Softwares:Proteus Hi Guys! Hope you’re well. I welcome you on board. Thank you for viewing this read. In this post today, I’ll walk you through the Introduction to BC557. BC557 is a bipolar junction tra ...