Component is essentially a professional way of sending pictures in TV edit suites etc, albeit it's beginning to appear in good quality home kit.
I have it on my gear at home, but to be honest, I can't see a huge difference between it and RGB through a SCART.
As has been said, why do you want it?
And there are no domestic receivers to my knowledge have it, although a number of DVD players do - even some very cheap ones.