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
Key Features
- 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
Applications
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.
Specifications
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for ULN2803ADWR:
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.
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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.
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| 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 |
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