Transistors

Transistors and MOSFETs for switching and amplification, used to drive relays, LEDs and motors from a microcontroller pin, build amplifier stages or switch power in a circuit.
General-purpose NPN transistors in TO-92 packages: the BC547, the BC548 and the low-noise BC549. For higher power, see the D882 (2SD882) NPN power transistor in TO-126 and the IRF3205 N-channel power MOSFET for high-current loads.
Check each product page for ratings and pinout before designing it in. Related ranges: semiconductors, integrated circuits, relay modules and motors and drivers.