I hae a SMD device (SOT-23-3). I am trying to figure out what it is. It is very clearly labelled with "109". No other text at all. It is very clear and it does not appear to be letters "I" or an "O", just numerals: 109.
Does anyone have some suggestions as to what it is? The way it is in the circuit, it would NOT appear to be a simple transistor. I think it is an IC of some sort.