TechnologiesThe ULN2803G-S18-R is a Darlington Transistor Array made by Unisonic Technologies. The component is packaged in a SOIC-18_300mil form factor, which is RoHS (Restriction of Hazardous Substances) compliant. The ULN2803G-S18-R is a driver that can be used to control and switch high-current loads. It contains a series of eight NPN Darlington transistors, each rated to 500 mA and able to switch up to 50 VDC. It is designed to use a single-ended logic input (up to 18 V) to control up to eight corresponding output channels. The ULN2803G-S18-R is suitable for use in a wide variety of applications, including motor control, relay and solenoid drive, LED display, and industrial control circuits.