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ULN2803-DW AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

ULN2803-DW product

ULN2803-DW

Component

ULN2803Darlington array8-channel driverrelay driverlow-side switchflyback diode

ULN2803-DW is an eight-channel Darlington low-side driver for relay coils, indicator loads, LEDs, and stepper-motor windings. It includes common flyback clamp diodes for inductive loads.

Best for

  • MCU or logic-controlled relay outputs
  • Low-side inductive-load switching
  • LED, lamp, and display driving
  • Stepper-motor winding control within current limits

Avoid if

  • Applications requiring a low output voltage drop
  • Loads requiring a high-side switch
  • Continuous high-current operation without thermal analysis

Check before use

  • Confirm package and pinout for the purchased ordering code
  • Keep collector-emitter voltage at or below 40 V
  • Evaluate power dissipation from Darlington saturation voltage
  • Connect COM appropriately when using the integrated clamp diodes

Key specifications

Driver channels
8
Collector-emitter voltage
40 V
Peak collector current
500 mA per channel
Continuous output current
100 mA/channel at TA = +85 °C
Input compatibility
TTL/CMOS
Clamp diodes
Integrated, common COM terminal

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Relay driversStepper motor driversLED and lamp drivers

Datasheet

a17231bd4eacd35f354b877f8b8e5a53_ULN2803-DW.pdf

800 KB

Datasheet AI

CAD Models

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

ULN2803-DW is a DOWO eight-channel NPN Darlington transistor array. Each channel is a low-side open-collector driver with a shared emitter connection and an integrated clamp diode connected to the common COM terminal.