ULN2804A - STMicroelectronics

Manufacturer Part Number

ULN2804A

Manufacturer

STMicroelectronics

Introduction

High-voltage, high-current Darlington transistor arrays

Designed to interface between low-level logic circuitry and high-power loads

Product Features and Performance

8 NPN Darlington-connected transistors

Capable of driving inductive loads such as relays, solenoids, and high-power lamps

High-voltage outputs up to 50V

High-current outputs up to 500mA per driver

Low saturation voltage of 1.6V @ 500mA, 350mA

High DC current gain of 1000 @ 350mA, 2V

Operating temperature range of -20°C to 150°C

Product Advantages

Simplifies power interface design

Allows direct control of inductive loads from low-level logic

Provides high-current, high-voltage drive capability

Compact 18-pin DIP package for easy through-hole mounting

Key Technical Parameters

Manufacturer Part Number: ULN2804A

Package: 18-pin Dual In-Line Package (18-DIP)

Voltage Collector Emitter Breakdown (Max): 50V

Current Collector (Ic) (Max): 500mA

Vce Saturation (Max) @ Ib, Ic: 1.6V @ 500A, 350mA

DC Current Gain (hFE) (Min) @ Ic, Vce: 1000 @ 350mA, 2V

Quality and Safety Features

RoHS3 compliant

Designed for reliable, long-term operation

Compatibility

Suitable for a wide range of applications requiring high-voltage, high-current Darlington transistor arrays

Application Areas

Driving inductive loads such as relays, solenoids, and high-power lamps

Interface between low-level logic circuitry and high-power loads

Automotive electronics

Industrial control systems

Consumer electronics

Product Lifecycle

The ULN2804A is an established and widely-used product, with no indication of discontinuation.

Replacement or upgrade options are available if needed.

Key Reasons to Choose ULN2804A

Reliable high-voltage, high-current Darlington transistor array

Simplifies power interface design and allows direct control of inductive loads

Compact 18-pin DIP package for easy through-hole mounting

Wide operating temperature range of -20°C to 150°C

RoHS3 compliant for environmental responsibility

Proven performance and long-term reliability