# ULN2803ADW (Component) ## Description Bipolar (BJT) Transistor Array 8 NPN Darlington 50V 500mA Surface Mount 18-SOIC The ULN2803ADW is a high-voltage, high-current Darlington transistor array designed for interfacing low-level digital logic circuits with high-power loads. The device integrates eight NPN Darlington pairs with common-emitter outputs and suppression diodes for inductive load driving. It is commonly used in relay drivers, LED matrix control, solenoid actuation, motor drivers, lamp control, and industrial automation interfaces. The integrated clamp diodes enable direct driving of inductive loads without requiring additional external protection circuitry. The input stage is compatible with standard TTL and CMOS logic levels, making the device suitable for microcontroller, FPGA, and processor-based systems. The ULN2803ADW provides compact multi-channel switching capability in a wide-body SOIC surface-mount package optimized for automated assembly and high-density PCB layouts. Key Features Eight-channel NPN Darlington transistor array High-current sink driver outputs Integrated flyback suppression diodes TTL and CMOS compatible inputs Open-collector outputs Suitable for inductive and resistive loads High output voltage capability Parallel output operation supported for increased current handling Wide operating voltage range Surface-mount SOIC wide-body package Industrial and embedded control application support Electrical Characteristics Darlington transistor output configuration High DC current gain Low input current requirement Common-cathode clamp diode structure Open-collector output topology Logic-level input compatibility High-voltage output tolerance Multi-channel simultaneous switching support Applications Relay and solenoid drivers Stepper motor interfaces LED and lamp driving Industrial automation systems PLC output stages Embedded control systems Printer and actuator control Automotive electronics Logic buffer and level shifting applications Package Information Package Type: SOIC Wide Body Mounting Type: Surface Mount Multi-pin integrated driver package RoHS compliant options available #commonpartslibrary #integratedcircuit #driveric #darlingtonarray #powermanagement #industrialelectronics #embeddedhardware #relaydriver #motorcontrol #automationelectronics ## Component Details - **Owner:** lcsc - **Created:** 11/5/2024 - **Last Updated:** 5/28/2026 - **Visibility:** Public - **Manufacturer Name:** Texas Instruments - **Symbol Style:** parametric-v1 - **LCSC Part Number:** C2865085 - **Part Type:** Darlington Transistor Arrays - **Package or Case Code:** SOIC-18_L11.6-W7.5-P1.27-LS10.3-BL - **Manufacturer Part Number:** ULN2803ADW - **JLCPCB Part Class:** Extended Part - **Datasheet URL:** https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/874/ULN2803A_Rev2015.pdf - **Used in:** 82 projects ## Distributor Pricing (qty 1) *Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.* | Distributor | Unit Price (qty 1) | Stock | |------------|--------------------|-------| | [Digi-Key](https://www.digikey.com/en/products/detail/texas-instruments/ULN2803ADW/1912658) | N/A | N/A | | [LCSC](https://www.lcsc.com/product-detail/C2865085.html) | $11.2097 | 0 | | [Mouser](https://www.mouser.com/ProductDetail/Texas-Instruments/ULN2803ADW?qs=pbofycSuseMKwJOYHHUaYQ%3D%3D) | N/A | N/A | - **Part Type:** Transistors - **Sub-Type:** NPN - **Manufacturer:** Texas Instruments - **MPN:** ULN2803ADW - **Mount Type:** Surface Mount - **Package / Case Code:** 18-SOIC - **Pin Count:** 18 - **Compliance:** Rohs ## Pins | Pin | Name | Type | |-----|------|------| | 1 | 1B | | | 2 | 2B | | | 3 | 3B | | | 4 | 4B | | | 5 | 5B | | | 6 | 6B | | | 7 | 7B | | | 8 | 8B | | | 9 | GND | | | 10 | COM | | | 11 | 8C | | | 12 | 7C | | | 13 | 6C | | | 14 | 5C | | | 15 | 4C | | | 16 | 3C | | | 17 | 2C | | | 18 | 1C | | --- *Generated from [https://www.flux.ai/lcsc/uln2803adw~rn3z](https://www.flux.ai/lcsc/uln2803adw~rn3z)*