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ULN2003A The Texas Instruments ULN2003A is a high-voltage, high-current Darlington transistor array. It features seven NPN Darlington pairs with common-cathode clamp diodes for switching inductive loads.
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ULN2003A

Available from 5 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments ULN2003A is a high-voltage, high-current Darlington transistor array. It features seven NPN Darlington pairs with common-cathode clamp diodes for switching inductive loads.
✓ Total Stock: 301,193 pcs
$ Price Range: $3.20

ULN2003A Available from 5 distributors

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ULN2003A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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ULN2003A Description

Short technical summary and product information.

The ULN2003A from Texas Instruments is a versatile high-voltage, high-current Darlington transistor array. Each device integrates seven NPN Darlington pairs, each capable of handling a 500mA collector current and providing 50V output voltage. Integrated common-cathode clamp diodes are included for effective switching of inductive loads.

 

Designed for broad compatibility, the inputs of the ULN2003A work with various logic types, including TTL and 5V CMOS devices, due to a 2.7kΩ series base resistor. This makes it suitable for applications such as relay drivers, stepper and DC brushed motor drivers, lamp drivers, and display drivers (LED and gas discharge).

 

The device is available in multiple package options including SOIC, PDIP, SOP, TSSOP, and SOT, catering to different assembly and space requirements. The Darlington pairs can also be paralleled for applications requiring higher current capability.

 

Key features include high-voltage outputs, output clamp diodes, and compatibility with common logic families. These characteristics make the ULN2003A a robust choice for driving loads that require higher current or voltage than standard logic gates can provide.

ULN2003A Quick Information

Product Type: Darlington Transistor Array
Canonical Name: ULN2003A High-Voltage, High-Current Darlington Transistor Array
Subcategory: Transistors

ULN2003A Compliance

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

ULN2003A Estimated Pricing

Qty Low High
1+ $3.20 $3.20

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

ULN2003A Features

  • Seven NPN Darlington transistor pairs.
  • 500mA rated collector current per output.
  • 50V high-voltage outputs.
  • Includes output clamp diodes.
  • Compatible with TTL and 5V CMOS logic.

ULN2003A Applications

  • Used for relay driver applications.
  • Suitable for motor driver circuits.
  • Ideal for driving LED displays.
  • Can drive gas discharge displays.
  • Functions as logic buffers.

ULN2003A FAQs

6 frequently asked questions generated from this part’s specifications.
What is the maximum collector current of the ULN2003A?

The maximum collector current per channel is 500mA.

What is the maximum output voltage of the ULN2003A?

The maximum output voltage is 50V.

What logic inputs are compatible with the ULN2003A?

Inputs are compatible with CMOS and TTL logic.

In what packages is the ULN2003A available?

It is available in SOIC, PDIP, SOP, TSSOP, and SOT packages.

What is the operating temperature range of the ULN2003A?

The operating temperature range is -40°C to 70°C.

Is the ULN2003A RoHS compliant?

RoHS3 compliance status is unverified.

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