ULN2803A Darlington Transistor Array – Reliable High-Current Driver IC

The ULN2803A Darlington Transistor Array is a versatile, high-current driver IC widely used in electronics projects, microcontroller interfacing, relay driving, stepper motor control, and computer hardware applications. Whether you're a hobbyist, engineer, or maker, this SMD-packaged component delivers dependable switching performance across a broad range of circuits.

Key Specifications

IC Type: ULN2803A Darlington Transistor Array
Current Rating: 500 mA per channel
Supply Voltage: Up to 50V
Operating Temperature: -40°C to +85°C
Package: SMD (Surface Mount Device)
Application: Computer, microcontroller interfacing, relay driving, motor control
Condition: New

Why Choose the ULN2803A?

High Current Capability: Handles up to 500 mA per Darlington pair, making it ideal for driving relays, lamps, and motors.
Wide Voltage Range: Supports supply voltages up to 50V for flexible circuit design.
Broad Temperature Tolerance: Operates reliably from -40°C to +85°C, suitable for demanding environments.
SMD Package: Compact surface-mount form factor for space-efficient PCB layouts.
Versatile Application: Compatible with TTL, CMOS, and microcontroller outputs for seamless integration.

Available Quantities

1 piece
5 pieces
10 pieces

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Frequently Asked Questions

Q: What is the ULN2803A Darlington Transistor Array used for?

A: The ULN2803A is a high-current Darlington transistor array IC used to drive loads such as relays, stepper motors, solenoids, and lamps from low-power microcontroller or logic signals. It is commonly used in computer hardware, automation projects, and electronic circuit design where a control signal needs to switch a higher-current load.

Q: What is the current and voltage rating of the ULN2803A?

A: Each Darlington pair in the ULN2803A can handle up to 500 mA of current, and the IC supports supply voltages up to 50V, making it suitable for a wide variety of switching and driver applications.

Q: What package type is this ULN2803A and how many pieces can I order?

A: This ULN2803A is available in an SMD (Surface Mount Device) package, ideal for compact PCB designs. You can order it in quantities of 1, 5, or 10 pieces to suit your project needs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.