# ULN2803A (Component)
## Description
Bipolar (BJT) Transistor Array 8 NPN Darlington 50V 500mA 2.25W Through Hole 18-DIP #commonpartslibrary
#transistor
#bjt
## Component Details
- **Owner:** adrian95
- **Created:** 9/22/2023
- **Last Updated:** 7/7/2024
- **Visibility:** Public
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Datasheet URL:** https://www.mouser.com/datasheet/2/389/uln2801a-1852595.pdf
- **Part Type:** Transistor
- **Manufacturer Part Number:** ULN2803A
- **Manufacturer Name:** STMicroelectronics
- **Used in:** 611 projects
- **Stars:** 1
- **Forks:** 1
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/uln2803a/stmicroelectronics.html?utm_currency=USD®ion=europe) | $1.0274 | 735K |
| [Digi-Key](https://www.digikey.com/en/products/detail/umw/ULN2803A/16705954) | $1.10 | 0 |
| [LCSC](https://www.lcsc.com/product-detail/C33962542.html) | $0.1545 | 2.7K |
| [Mouser](https://www.mouser.com/ProductDetail/STMicroelectronics/ULN2803A?qs=FOlmdCx%252BAA1lVc%2FYEXA4pg%3D%3D) | $1.68 | 33K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=ULN2803A) | $1.52 | 1K |
| [Verical](https://www.verical.com/pd/stmicroelectronics-bjt---darlington-ULN2803A-117279?utm_currency=USD) | N/A | N/A |
- **Part Type:** Transistors
- **Sub-Type:** NPN
- **Manufacturer:** STMicroelectronics
- **MPN:** ULN2803A
- **Mount Type:** Through Hole
- **Package / Case Code:** 18-DIP
- **Pin Count:** 18
## Pins
| Pin | Name | Type |
|-----|------|------|
| 1 | IN_1 | |
| 2 | IN_2 | |
| 3 | IN_3 | |
| 4 | IN_4 | |
| 5 | IN_5 | |
| 6 | IN_6 | |
| 7 | IN_7 | |
| 8 | IN_8 | |
| 9 | GND | |
| 10 | COMMON_FREE__WHEELING_DIODES | |
| 11 | OUT_8 | |
| 12 | OUT_7 | |
| 13 | OUT_6 | |
| 14 | OUT_5 | |
| 15 | OUT_4 | |
| 16 | OUT_3 | |
| 17 | OUT_2 | |
| 18 | OUT_1 | |
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*Generated from [https://www.flux.ai/adrian95/uln2803a~6vl](https://www.flux.ai/adrian95/uln2803a~6vl)*