ULN2004ADR

Product Overview

The ULN2004ADR from Texas Instruments is a surface-mount bipolar transistor array containing seven NPN Darlington transistors in a 16-SOIC package. It provides 50 V collector-emitter breakdown rating and 500 mA maximum collector current, with a maximum collector-emitter saturation voltage of 1.6 V at 500 µA base current and 350 mA collector current.

Key Features

• Seven NPN Darlington transistors in one 16-SOIC surface-mount array.
• 50 V maximum collector-emitter breakdown voltage.
• 500 mA maximum collector current.
• 1.6 V maximum collector-emitter saturation voltage at 500 µA base current and 350 mA collector current.
• 50 µA maximum collector cutoff current.
• Operating temperature range of -40°C to 105°C ambient.

Applications

• Switching loads within the 50 V collector-emitter and 500 mA collector current ratings.
• Seven-channel discrete switching in surface-mount assemblies using one 16-SOIC package.
• Control paths operated at 500 µA base current and 350 mA collector current, where the 1.6 V saturation limit applies.

Design & Procurement Notes

When selecting the ULN2004ADR, confirm that the collector-emitter voltage remains below 50 V and collector current remains at or below 500 mA, with saturation voltage considered at the actual base and collector currents. The 16-SOIC surface-mount package and 3.90 mm width should be checked against the PCB footprint and thermal constraints for operation from -40°C to 105°C ambient.