Seven Darlington channels rated 500 mA at 50 V
The ULN2004AID integrates seven NPN Darlington pairs in a 16-SOIC package, each rated for 500 mA continuous output current and 50 V maximum load voltage — enough to drive small relays, solenoids, stepper-motor windings, or indicator lamps from a logic-level signal.
Industrial temperature range and surface-mount footprint
Rated for -40 to +105 °C ambient, the array suits factory-floor control cabinets, HVAC panels, and outdoor telecom equipment where the board sees both cold starts and self-heating from adjacent power stages. The 16-SOIC (150-mil body) footprint is a standard JEDEC outline — the same land pattern serves the ULN2003A family, so a single PCB layout covers multiple BOM options.
Active lifecycle and compliance status
For designs requiring a higher output current or a different package variant, the ULx200xA series includes pin-compatible siblings in PDIP, SOIC, and TSSOP — confirm the output configuration and input logic threshold against the BOM before committing.