ULN2803 8-Channel NPN Darlington Transistor Array IC

Product Details

  • Product type: Darlington transistor array
  • IC number: ULN2803
  • Polarity: NPN
  • Number of pins: 18
  • Package: PDIP-18
  • Mounting type: through hole
  • Package contains: 1 x ULN2803 8-Channel NPN Darlington Transistor Array IC

29.00 (ex. GST)

ULN2803 is a Darlington array IC. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive load. The collector-current rating of each Darlington pair is 500mA, but pairs may be connected in parallel for higher current capability. 

The device has 8 transistors in a single unit, so can drive 8 loads simultaneously. Each transistor in the array acts as an individual and can be triggered On and OFF individually. The IC can be used in programmable load sharing applications. 


  • Output clamp diode
  • Inputs compatible with multiple various types of logic
  • High output voltage: 50V
  • 500mA rated collector current 


  • Relay drivers
  • Hammer drivers
  • Lamp drivers
  • Display driver (LED and gas discharge)
  • Line drivers
  • Logic buffers
  • Stepper motor drivers
  • IP camera

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