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ULN2803A The UMW ULN2803A is an 8-channel NPN Darlington transistor array designed for high-voltage and high-current applications. It features an open-collector output and is suitable for direct connection to TTL and CMOS logic.
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ULN2803A

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The UMW ULN2803A is an 8-channel NPN Darlington transistor array designed for high-voltage and high-current applications. It features an open-collector output and is suitable for direct connection to TTL and CMOS logic.
✓ Total Stock: 20 pcs
$ Price Range: $2.95

ULN2803A Available from 1 distributor

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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 from UMW is a high-voltage, high-current Darlington driver IC comprising 8 NPN Darlington pairs. Each unit shares a common emitter and features an open-collector output. A 2.7KΩ resistor is integrated in series with each Darlington pair, enabling direct compatibility with TTL and 5V CMOS logic without requiring a buffer.

 

This device offers a sink current of up to 500mA and a withstand voltage of 50V, making it suitable for driving high load currents. It is available in a surface mount 18-SOP package, facilitating integration into various electronic designs.

 

Key electrical characteristics include a maximum collector current of 500mA and a collector-emitter breakdown voltage of 50V. The saturation voltage is specified at 1.6V at 500µA input current and 350mA collector current. The operating temperature range is from -40°C to 150°C (TJ).

 

Applications for the ULN2803A include relay drivers, clamp drivers, stepper motor drivers, solenoid drivers, and DC brushless motor drivers. Its robust design and integrated features make it a versatile component for interfacing low-logic signals with higher power loads.

ULN2803A Quick Information

Product Type: Darlington Transistor Array
Canonical Name: ULN2803A Darlington Transistor Array
Subcategory: Voltage Regulators - Linear Regulator Controllers

ULN2803A Compliance

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

ULN2803A Estimated Pricing

Qty Low High
1+ $2.95 $2.95

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

ULN2803A Features

  • 8-channel NPN Darlington array
  • 500mA sink current per channel
  • 50V output voltage capability
  • Surface mount 18-SOP package
  • TTL and CMOS compatible inputs

ULN2803A Applications

  • Relay driver applications
  • Solenoid driver circuits
  • Stepper motor control
  • DC brushless motor driving
  • High load current interfacing

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 (Small Outline Integrated Circuit) package.

What is the maximum collector current supported by the ULN2803A?

The ULN2803A supports a maximum collector current of 500mA per channel.

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

The collector-emitter breakdown voltage of the ULN2803A is 50V.

What is the operating temperature range of the ULN2803A?

The ULN2803A operates within a temperature range from -40°C to 150°C.

Is the ULN2803A RoHS compliant?

Yes, the ULN2803A is RoHS3 compliant.

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