ULN2803ADWR – TEXAS INSTRUMENTS
Octal NPN Darlington Transistor, 500 mA 50 V, 18-Pin SOIC
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The ULN2803ADWR is an 8-channel Darlington transistor array designed for interfacing low-level digital signals with high-current loads. Each channel in the ULN2803ADWR can sink currents up to 500 mA, making it ideal for driving relays, solenoids, motors, and LED arrays. Its integrated clamp diodes provide protection against inductive voltage spikes, ensuring safe operation in industrial and automotive applications. Operating at standard 5V TTL levels, this device offers robust drive strength with low input current requirements. Packaged in a DIP or surface-mount configuration, the ULN2803ADWR simplifies PCB design and supports high-density layouts. Detailed datasheet parameters, including saturation voltage, current transfer ratio, and thermal resistance, allow engineers to design reliable, efficient switching circuits. Its proven performance and ease of integration make the ULN2803ADWR a popular choice in applications that require efficient power driving and signal interfacing across various electronic systems.
