ULN2803 8 Darlington Transistor Array IC (SMD Package)

Carrying the exact same eight Darlington channels as the DIP-18 version also in the catalog, this SMD-package ULN2803 is built for a finished PCB layout rather than a breadboard, driving relays, solenoids, or stepper coils straight from microcontroller logic without taking up the board space a through-hole chip would need. It's the natural pick whenever a design has already moved past the prototyping stage and needs the same proven driver capability in a smaller footprint.