ULN2003 7 Darlington Transistor Arrays IC SMD Package

ULN2003 7 Darlington Transistor Arrays IC SMD Package 

The ULN2003 is a widely used 7-channel Darlington transistor array IC in a surface-mount (SMD) package that allows low-power logic circuits (like microcontrollers and logic gates) to switch higher-current loads. Each channel contains a Darlington pair, providing high current gain to drive loads such as relays, motors, lamps, and solenoid coils with ease. The IC includes open-collector outputs and integrated clamp diodes for protecting against voltage spikes from inductive loads. Its compact SMD package makes it ideal for modern PCB designs where board space and ease of assembly are priorities.

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Features

• 7 Darlington Transistor Channels — Seven independent high-gain switching outputs
• Surface-Mount (SMD) Package — Compact form factor for modern PCB assembly
• High Current Capability — Suitable for driving medium-power loads
• Open-Collector Outputs — Easy interface with external loads and supply voltages
• Integrated Clamp Diodes — Protects the IC when driving inductive loads such as relays and motors
• Logic-Level Compatible Inputs — Works with TTL/CMOS logic signals
• Common-Emitter Configuration — Simplifies connection and wiring to loads
• Low Input Current Requirement — Minimal drive needed from controllers

Applications

• Relay and solenoid drivers in automation systems
• Stepper motor and DC motor control circuits
• LED and display segment drivers
• Lamp and indicator switching
• Microcontroller interface for higher-power loads
• Robotics and embedded systems
• Industrial control applications
• General purpose power switching functions

uln2003-ic-datasheet