The ULN2803C is a versatile 8-channel Darlington transistor array designed to bridge the gap between low-power microcontrollers and high-power peripherals. Each of the eight NPN Darlington pairs can handle up to 500mA of continuous current and withstand voltages up to 50V, making it a "must-have" for hobbyists working with Arduino, ESP32, or Raspberry Pi. This specific version comes in a through-hole (DIP) package, which is ideal for breadboarding, prototyping, and DIY soldering projects. Whether you need to switch heavy-duty relays, drive stepper motors, or control high-brightness LED arrays, the ULN2803C provides a compact, reliable, and easy-to-implement solution.
8-Channel Driver: Control up to eight independent loads with a single chip.
High-Current Output: Each channel supports a 500mA rated collector current.
50V Output Rating: Handles high-voltage loads safely.
Integrated Clamp Diodes: Built-in protection against inductive voltage spikes (flyback) from motors and relays.
Logic Compatibility: Features a 2.7kΩ series base resistor for direct operation with 5V CMOS and TTL logic.
Parallelable Outputs: Channels can be connected in parallel to achieve higher current capacity for a single load.
Through-Hole Package: Easy to use with breadboards and perf-boards.
Relay and Solenoid Drivers
Stepper Motor Control
LED Matrix and Display Drivers
DC Brushed Motor Driving
Logic Buffers and Line Drivers
Lamp and Hammer Drivers
Channels: 8
Transistor Type: NPN Darlington Pair
Max Collector-Emitter Voltage (VCE): 50V
Max Output Current (per channel): 500mA
Peak Collector Current: 500mA
Input Voltage (VI): Up to 30V
Input Compatibility: 5V TTL / CMOS
Package Type: 18-pin PDIP (Through-Hole)
Operating Temperature: -40°C to 85°C