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50-V, 8-ch darlington array

Inventory: 55,097

Download data sheet for ULN2803A
  |   View additional information for ULN2803A

Same as: ULN2803ADWG4  This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

Packaging information

Package | Pins SOIC (DW) | 18
Operating temperature range (°C) I (-40 to 85)
Package qty | Carrier: 40 | TUBE
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Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • 500-mA-Rated Collector Current (Single Output)
  • High-Voltage Outputs: 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic


The ULN2803A device is a 50 V, 500 mA 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.

Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2803A device has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

Qty Price
1-99 $1.16
100-249 $0.89
250-999 $0.66
1,000+ $0.47

Alternative carriers

Part number ULN2803ADWR
Package qty | Carrier 2,000 | LARGE T&R
Inventory 453,855
Qty | Price (USD) 1ku | $0.39