ULN2803A Pinout Diagram

●The ULN2803A from STMicroelectronics is a through hole eight darlington array in DIP package. Array contains eight darlington transistors with common emitters and integral suppression diodes for inductive loads. Each darlington features a peak load current rating of 600mA (500mA continuous) and can withstand at least 50V in the OFF state. ULN2803A has a 2.7Kohm input resistor for 5V TTL and CMOS to simplify logic families interfacing.

● Inputs pinned opposite to outputs to simplify board layout

● Outputs may be paralleled for higher current capability

● Integral suppression diodes

● Output voltage of 50V

● DC current gain (hFE) of 1000

● Operating ambient temperature range from -20°C to 85°C

● Power dissipation (Pd) is 2.25W