The ULN2004ANS is a small-signal bipolar transistor array from the ULN2004 family, built as a Darlington configuration for driving inductive loads such as relays, solenoids, stepper motors, and lamps. It integrates seven open-collector outputs with common-cathode clamp diodes for flyback protection, making it a standard choice in industrial control panels, PLC output stages, and automotive actuator interfaces.
If your line uses a pick-and-place machine, you will need to transfer the parts to a compatible feeder or tray. For hand-assembly or low-volume prototyping, bulk is fine and avoids the reel premium. The base product number ULN2004 covers the family; the 'NS' suffix indicates the SOIC-16 narrow-body package, which is the standard footprint for this Darlington array.
ROHS3 compliance is confirmed.