ULN2803 8 Darlington Transistor Arrays IC SMD Package

ULN2803 8 Darlington Transistor Arrays IC SMD Package 

The ULN2803 is an 8-channel Darlington transistor array IC in an SMD package designed to interface low-power logic circuits with higher-current and higher-voltage loads. Each channel consists of a Darlington pair that amplifies input signals to drive loads such as relays, motors, lamps, and LED segments. The open-collector outputs and integrated clamp diodes make it ideal for switching inductive loads without needing many external components. Its compact surface-mount package makes it suitable for dense PCB designs in embedded and industrial applications.

Click here to view related products

Features

• 8 Darlington Transistor Arrays — Eight independent high-gain switching channels
• SMD Package — Surface-mount design for modern PCB assembly
• High Voltage & Current Handling — Suitable for driving a variety of loads
• Open-Collector Outputs — Easy interfacing with external loads and supplies
• Integrated Clamp Diodes — Protects against inductive kickback when switching coils, relays, and motors
• Logic-Level Inputs — Compatible with TTL and CMOS logic signals
• Low Input Current — Minimal drive requirement from microcontrollers or logic devices
• Common-Emitter Configuration — Simplifies connection to loads

Applications

• Relay and solenoid drivers
• DC motor and stepper motor control
• LED matrix and display segment driving
• Lamp and indicator switching
• Interfacing microcontrollers with high-power devices
• Industrial control systems
• Robotics and automation circuits
• General purpose power switching

uln2803-ic-datasheet