Hi guys, I had some trouble with my account and couldn't login, it is working now.
Thank you and I appreciate the thoughtful replies.
So, when designing the base and collector resistance and determining the base current, me as a design need to know if the transistor needs to be a switch or an amplifier.
In this case, since I am using it as a switch, therefore I need to look at the saturation characteristics of the transistor.
By looking at the collector-emitter saturation voltage on page 2, the beta value will be 100 for both conditions. But, as a designer, if my requirement is 71.4mA, do I still assume the beta is 100? if so, when will this assumption break down?
thank you