Mfr Part #:

ULN2003A

Mfr Name: Vishay

The ULN2003A from Vishay Dale 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: 105 pcs

$ Price Range: $1.94

ULN2003A Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Partservice ✓ Non-Authorised Inventory information	55 pcs On Request	55 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Chanetech ✓ Non-Authorised Inventory information	50 pcs On Request	50 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

ULN2003A Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Vishay
Delay Time	250ns
Operating Temperature	-40°C to 70°C
Output Voltage	50V

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ULN2003A Description

Short technical summary and product information.

The ULN2003A is a versatile 7-channel high-voltage, high-current Darlington transistor array manufactured by Vishay Dale. Each channel is capable of handling a 500mA collector current and features high-voltage outputs up to 50V. Integrated output clamp diodes are included for effective switching of inductive loads.

Designed for direct compatibility with TTL or 5V CMOS devices, the ULN2003A includes a 2.7kΩ series base resistor for each Darlington pair. This configuration simplifies interfacing with various logic types. The device operates within a temperature range of -40°C to 70°C.

Common applications for the ULN2003A include relay drivers, stepper and DC brushed motor drivers, lamp drivers, and display drivers for LEDs and gas discharge tubes. Its robust design and high current capability make it suitable for demanding switching applications.

The ULN2003A is available in multiple package types, including SOIC, PDIP, SOP, TSSOP, and SOT, with package sizes varying to accommodate different design constraints.

ULN2003A Quick Information

Product Type: Darlington Transistor Array

Canonical Name: ULN2003A High-Voltage, High-Current Darlington Transistor Array

Subcategory: Darlington

ULN2003A Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

ULN2003A Estimated Pricing

Qty	Low	High
1+	$1.94	$1.94

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

ULN2003A Features

500mA rated collector current per output.
High-voltage outputs up to 50V.
Integrated output clamp diodes.
Inputs compatible with TTL and 5V CMOS.
Suitable for relay and motor driver applications.

ULN2003A Applications

Used for driving relays and solenoids.
Ideal for stepper motor control.
Suitable for LED display drivers.
Applicable for lamp and incandescent drivers.
Functions as a logic buffer.

ULN2003A FAQs

6 frequently asked questions generated from this part’s specifications.

What is the maximum collector current for a single output of the ULN2003A?

The maximum collector current for a single output is 500mA.

What is the maximum output voltage of the ULN2003A?

The high-voltage outputs of the ULN2003A are rated up to 50V.

What types of logic are compatible with the ULN2003A inputs?

The inputs are compatible with CMOS and TTL logic.

What is the operating temperature range for the ULN2003A?

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

What is the typical delay time for the ULN2003A?

The typical delay time is 250ns.

What is the base resistor value for the ULN2003A?

The ULN2003A has a 2.7kΩ series base resistor for each Darlington pair.