ULN2803 Darlington Transistor Array SOIC18 | ULN2803 SMD IC

About ULN2803 Darlington Transistor Array SOIC18 | ULN2803 SMD IC:

The ULN2803 Darlington Transistor Array SOIC18 is a high-performance, compact, and efficient driver IC designed to interface between low-level logic signals and high-current or high-voltage loads. This ULN2803 SMD IC features eight NPN Darlington pairs, each capable of delivering up to 500mA output current and 50V output voltage, making it an ideal choice for driving relays, stepper motors, lamps, solenoids, and LEDs in compact electronic systems.

Built using advanced silicon technology, the ULN2803 Darlington Transistor Array SOIC18 offers high current gain and robust performance while maintaining excellent thermal and electrical stability. Each Darlington pair includes an integrated clamp diode for inductive load protection, ensuring safe and reliable operation in industrial and consumer electronic applications.

The SOIC18 surface-mount package provides a space-saving solution for modern PCB layouts, supporting automated assembly and high-density designs. This makes the ULN2803 SMD IC a preferred choice for engineers, product designers, and manufacturers looking for reliability and efficiency in compact circuit configurations.

Key Features

• Type: ULN2803 Darlington Transistor Array

• Package: SOIC18 (SMD)

• Eight NPN Darlington pairs with high-voltage outputs

• Output current up to 500mA per channel

• Output voltage up to 50V

• Built-in clamp diodes for inductive load suppression

• Input compatible with TTL and 5V CMOS logic

• Low input current and high current gain

• Compact surface-mount package for modern PCB layouts

• Excellent thermal and electrical stability

• Wide operating voltage range

Applications

The ULN2803 Darlington Transistor Array SOIC18 is used in a wide range of applications, including:

• Relay and solenoid driver circuits

• Stepper motor controllers and servo drivers

• LED and lamp driving circuits

• Industrial automation and control systems

• Robotics and mechatronics

• Microcontroller and PLC interfacing

• Home automation and smart devices

• Automotive electronics and indicators

• Educational and DIY electronic projects

Why Choose ULN2803 SMD IC?

The ULN2803 SMD IC is a proven solution for driving multiple loads from logic-level signals. With eight Darlington transistor pairs in one compact package, it eliminates the need for multiple discrete components, reducing board space and design complexity.

Each channel is capable of handling substantial current and voltage, making it perfect for controlling inductive and resistive loads. The integrated flyback diodes safeguard connected devices from voltage spikes generated by inductive loads, enhancing overall circuit durability.

For engineers and designers in India, the ULN2803 Darlington Transistor Array SOIC18 offers unmatched reliability and cost-effectiveness. The SMD package allows easy integration into automated production lines and compact PCBs, making it ideal for high-density, low-profile electronic assemblies.

Its compatibility with TTL and CMOS logic levels makes it easy to interface directly with popular microcontrollers such as Arduino, Raspberry Pi, ESP32, STM32, and PIC series. This makes the ULN2803 SMD IC a go-to component for both professional and educational electronics projects.

Benefits of ULN2803 Darlington Transistor Array SOIC18

• High Load Capability: Up to 500mA per channel with 50V output.

• Compact Design: SOIC18 package saves board space and supports SMD assembly.

• Integrated Protection: Built-in clamp diodes prevent damage from voltage spikes.

• Versatile Interfacing: Compatible with TTL and CMOS logic signals.

• Enhanced Durability: Excellent thermal performance and long-term reliability.

• Industrial Grade Quality: Ideal for high-performance automation and control systems.

• Optimised for India’s Electronics Market: Perfect for both industrial production and hobby projects.

Summary

The ULN2803 Darlington Transistor Array SOIC18 is a compact, high-efficiency, and cost-effective SMD driver IC designed for modern electronics applications. Featuring eight high-current Darlington transistor pairs with integrated flyback diodes, it delivers robust and reliable switching for inductive and resistive loads.

With its space-saving SOIC18 SMD package, the ULN2803 offers superior performance for automation, robotics, lighting control, and home electronics. Whether you’re building a commercial control system or a DIY project, the ULN2803 SMD IC ensures dependable performance, ease of integration, and long-term stability.

Trusted by engineers and electronics professionals across India, the ULN2803 Darlington Transistor Array SOIC18 stands out for its compact design, excellent protection features, and versatility in controlling multiple high-current devices from low-level logic signals.

Manufacturing Part Number (MPN): ULN2803
Package: SOIC-18 SMD
Pins: 18

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