When you need a component (ex. SCR) with specific requirements (ex. 12amp max and less than 20mA gate trigger current) how do you go about finding the component? How do you know what's out there for purchase in extremely small quantities (like just a few). This always becomes a problem when I am doing a project. I know what I need but I don't know how or where to get it. I hope I have explained myself well and I hope there is someone that will read this and guide me in the right direction. Thanks in advance.