>
>>>>> for relay switching circuit which transistor is perfer
>>
>>if i'm getting 3.3v/0v input signal for base terminal
>
> What's the coil voltage and current?
>
> You could probably use a logic-level n-channel mosfet, something like > FDV301.
>
> I'm designing a board that needs about 125 relays. Turns out that
> modern nfets don't need flyback clamp diodes, which will save me some
> room I need for routing traces.
They don't? I guess I'm not using "modern" NFETs then ... :(
Or are you just gonna rely on the body diode?