ULN2803ADWR Texas Instruments Transistor (Small Outline Packages) In Stock
ULN2803ADWR is an 8-channel Darlington transistor array driver in SOIC-18 package, featuring open-collector outputs with 500mA sink current capacity and built-in flyback diode protection for inductive loads. From $2.50, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- OBSOLETE
- Datasheet
- ULN2803ADWR Datasheet PDF
- Category
- Transistor
- Price
- From $2.5000(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ULN2803ADWR?
- 8-channel Darlington transistor array with 500mA open-collector sink current output per channel
- Built-in transient suppression diodes for protection against inductive load flyback voltage spikes
- Wide input voltage compatibility suitable for direct interface with TTL and CMOS logic levels
- SOIC-18 compact surface-mount package ideal for space-constrained PCB designs
What is ULN2803ADWR used for?
The ULN2803ADWR is widely used in relay driver circuits, stepper motor control, solenoid drivers, and LED array driving applications where high-current switching from low-power logic signals is required. Its 8-channel configuration makes it ideal for driving multiple loads simultaneously in industrial automation, home appliance controls, and printer head drivers. The integrated flyback diodes simplify design when driving inductive loads such as motors and solenoids.
What are the specifications of ULN2803ADWR?
| YTEOL | 0 |
| Built-in Protections | TRANSIENT |
| Driver Number of Bits | 8 |
| Interface IC Type | BUFFER OR INVERTER BASED PERIPHERAL DRIVER |
| JESD-30 Code | R-PDSO-G18 |
| Number of Functions | 1 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Current Flow Direction | SINK |
| Output Current-Max | 0.5A |
| Output Peak Current Limit-Nom | 0.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Current-Max | 1.35mA |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| ## ULN2803ADWR Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the ULN2803ADWR datasheet?
ULN2803ADWR Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for ULN2803ADWR?
Compatible alternatives and drop-in replacements for ULN2803ADWR:
suggested
suggested
suggested
suggested
suggested
Frequently Asked Questions
What is the maximum output current per channel of the ULN2803ADWR?
Each channel of the ULN2803ADWR can sink up to 500mA (0.5A) of output current. The peak output current limit is also rated at 500mA, making it suitable for driving relays, solenoids, and stepper motors that require moderate current switching.
What types of loads can the ULN2803ADWR drive?
The ULN2803ADWR is designed to drive inductive loads such as relays, stepper motors, solenoids, and DC motors, as well as resistive and LED loads. Its built-in transient suppression (flyback) diodes provide protection against voltage spikes generated by inductive loads, eliminating the need for external protection diodes.
Is the ULN2803ADWR compatible with TTL and CMOS logic inputs?
Yes, the ULN2803ADWR is compatible with both TTL and CMOS logic levels. It functions as a buffer or inverter-based peripheral driver, allowing direct interface from 3.3V or 5V microcontrollers and logic circuits to drive higher-current peripheral devices without additional level-shifting components.
What package does the ULN2803ADWR use and what is its footprint?
The ULN2803ADWR comes in a SOIC-18 (Small Outline IC, 18-pin) surface-mount package, also identified by JESD-30 code R-PDSO-G18. This compact package is suitable for automated PCB assembly and is ideal for high-density board designs compared to through-hole DIP alternatives.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.8500 | $3.85 |
| 60+ | $3.3497 | $200.98 |
| 78+ | $3.2238 | $251.46 |
| 97+ | $3.0978 | $300.49 |
| 100+ | $2.8800 | $288.00 |
| 1000+ | $2.5000 | $2500.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”
You May Also Like
TLP222A-2(F)
Toshiba
Transistor
PVG612ASPBF
Infineon
Transistor
SI1016X-T1-GE3
Vishay
Transistor
2SCR513P5T100
ROHM Semiconductor
Transistor
IRF8915TRPBF
Infineon
Transistor
TLP183(BL,E
Toshiba
Transistor
SI5515CDC-T1-GE3
Vishay
Transistor
CGHV27015S
Cree, Inc.
Transistor
NST3946DP6T5G
ON Semiconductor
Transistor
IRLU120NPBF
Infineon
Transistor
CPH3461-TL-W
ON Semiconductor
Transistor
PBSS4350Z
Nexperia
Transistor
NSVJ3910SB3T1G
ON Semiconductor
Transistor
2N4393
Central Semiconductor
Transistor
BA12004BF-E2
ROHM Semiconductor
Transistor
BA12003BF-E2
ROHM Semiconductor
Transistor
IRLZ44
Vishay
Transistor
SMBTA06UPNE6327HTSA1
Infineon
Transistor
IRF7319TRPBF
Infineon
Transistor
IPP80P03P4L04AKSA1
Infineon
Transistor
PMN48XP,125
Nexperia
Transistor
IRLML6402TRPBF
Infineon
Transistor
ZTX788B
Diodes Inc.
Transistor
2SA1943-O(Q)
Toshiba
Transistor