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ULN2803A The ULN2803A is an 8-channel NPN Darlington transistor array from UMW. It offers a 500mA sink current and a 50V output voltage, suitable for various interface applications.
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ULN2803A

Available from 1 distributors
Mfr Name: Allegro Microsystems
Allegro Microsystems
The ULN2803A is an 8-channel NPN Darlington transistor array from UMW. It offers a 500mA sink current and a 50V output voltage, suitable for various interface applications.
✓ Total Stock: 33 pcs
$ Price Range: $1.94

ULN2803A Available from 1 distributor

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✓ Non-Authorised
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ULN2803A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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ULN2803A Description

Short technical summary and product information.

The ULN2803A is a high-voltage, high-current Darlington driver IC from UMW, featuring 8 NPN Darlington pairs. Each unit has an open-collector output and includes a 2.7KΩ resistor for compatibility with TTL and 5V CMOS logic without requiring a buffer.

 

This transistor array is designed for applications requiring significant current handling, with a sink current capability of up to 500mA per channel. It boasts a high output voltage of up to 50V, making it suitable for driving loads such as relays, solenoids, and stepper motors. The device also includes clamp diodes for switching inductive loads.

 

The ULN2803A is available in a surface mount 18-SOP package, facilitating integration into compact electronic designs. Its robust design and versatile features make it a reliable choice for numerous interface and driver applications.

ULN2803A Quick Information

Product Type: Darlington Transistor Array
Canonical Name: ULN2803A Darlington Transistor Array
Subcategory: Darlington

ULN2803A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

ULN2803A Estimated Pricing

Qty Low High
1+ $1.94 $1.94

Estimated market price range - modelled values for guidance only, not live distributor offers.

ULN2803A Features

  • 8-channel NPN Darlington array.
  • Up to 500mA sink current per channel.
  • Up to 50V output voltage.
  • Integrated pull-up resistors for logic compatibility.
  • Surface mount 18-SOP package.

ULN2803A Applications

  • Ideal for relay driver applications.
  • Suitable for DC motor control.
  • Used for solenoid and magnet valve driving.
  • Applicable in stepper motor control.

ULN2803A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the package type of the ULN2803A?

The ULN2803A is packaged in an 18-SOIC case.

What is the maximum collector current for each channel of the ULN2803A?

The maximum collector current is 500 mA per channel.

What is the collector-emitter breakdown voltage of the ULN2803A?

The collector-emitter breakdown voltage is 50 V.

What is the operating temperature range of the ULN2803A?

It operates within a temperature range of -40°C to 150°C.

Is the ULN2803A RoHS compliant?

Yes, the ULN2803A is RoHS3 compliant.

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