ULN2803A 8x NPN Darlington Transistor8x darlington transistor
2.7-kΩ series base resistor for each Darlington pair
500mA Rated Collector Current
max VCE = 50V
The ULN2803A is a high-voltage, high-current Darlington transistor array. The device consists of eight npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The
collector-current rating of each Darlington pair is 500 mA. The Darlington pairs may be connected in parallel for higher current capability.