ULN2802A DIP-18 Darlington Transistor Array - 50V, 500mA

The ULN2802A is an eight-channel high-voltage, high-current Darlington transistor array designed for driving loads such as relays, motors, solenoids, and other high-power devices. It is ideal for applications where TTL or CMOS logic systems need to control high-current devices. This array of transistors offers a continuous collector current of 500 mA per channel and a maximum output voltage of 50V, making it suitable for interfacing with various high-voltage loads.

Each of the transistors in the ULN2802A contains integral free-wheeling diodes, providing clamping for inductive load suppression, protecting the logic systems from switching transients. It also includes a 10.5 kΩ input resistor that allows easy connection to 14-25V CMOS or PMOS logic families. The device is housed in a compact 18-pin DIP package, designed for through-hole mounting, making it highly reliable and robust for use in commercial and industrial applications.The ULN2802A is optimized for use in systems that require multiple high-power switches controlled by low-level logic. Typical applications include driving LED displays, relay modules, lamp drivers, and motor controls. With its ability to handle substantial output loads and protect sensitive components from voltage spikes, it is widely used in automotive, industrial, and consumer electronics.

• Eight Darlington transistors: Capable of sourcing 500 mA per channel, suitable for high-current applications.
• High-voltage capability: Handles up to 50V output, ideal for driving relays, LEDs, and motors.
• Optimized for 14-25V logic families: Includes a 10.5kOhm input resistor for 14-25V PMOS or CMOS logic compatibility.
• Built-in clamp diodes: Protection diodes for each output help manage inductive load switching transients.
• Easy to use: Simplified layout in an 18-pin DIP package for through-hole mounting.
• Versatile applications: Used in motor control, relay driving, and other high-power switching applications.