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Texas Instruments ULN2803ADWG4 — Discrete Semiconductors

ULN2803ADWG4 Texas Instruments 8 NPN Darlington Array

MPNULN2803ADWG4
End of Life

Texas Instruments ULN2803ADWG4, Automotive AEC-Q100 8 NPN Darlington array, 500 mA per-channel collector current, 50 V Vce breakdown, 18-SOIC surface-mount package, -40°C to 85°C operating range.

$2.9600Ref. price · indicative, final on quote
Texas Instruments ULN2803ADWG4 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

ULN2803ADWG4 specifications
ParameterValue
SeriesAutomotive, AEC-Q100
MountingSurface Mount
FET type8 NPN Darlington
Voltage - collector emitter breakdown50V
Current - collector (Ic)500mA
Operating temperature-40°C~85°C(TA)
PackageTube
Case18-SOIC (0.295\", 7.50mm Width)
Vce saturation (Max) @ ib, ic1.6V @ 500µA, 350mA

Product details

500 mA per-channel sink driver with AEC-Q100 qualification

Each channel integrates the base-drive resistor and a suppression diode for inductive loads, so a relay, solenoid, or lamp bank connects directly to the output pin with no external flyback diode.

Vce saturation and load-current headroom

Maximum Vce saturation is 1.6 V at 500 µA base current and 350 mA collector current. At the full 500 mA rating the saturation voltage climbs — budget 1.8–2.0 V typical — so the load supply must be at least 2 V above the load's minimum operating voltage to keep the Darlington in saturation. The 50 V Vce breakdown gives ample margin for a 24 V industrial bus or a 48 V automotive auxiliary rail.

Product status is Active.

Frequently asked questions

Is ULN2803ADWG4 a direct replacement for ULN2803A?

The ULN2803ADWG4 is the AEC-Q100 automotive-qualified variant of the standard ULN2803A. Electrically they are identical — same 500 mA per-channel rating, same 50 V breakdown, same 18-SOIC footprint. The AEC-Q100 grade adds traceability and qualification documentation required for automotive BOMs. For non-automotive builds the ULN2803A is functionally interchangeable.