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ULN2003B

The Texas Instruments ULN2003B is a high-voltage, high-current Darlington transistor array featuring seven NPN pairs with common-cathode clamp diodes. It offers 50V high-voltage outputs and a 500mA collector current rating per output.

✓ Total Stock: 139,077 pcs

$ Price Range: $0.99

ULN2003B Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	139,077 pcs On Request	139077 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

ULN2003B Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Delay Time	250 ns
Mounting Type	Through Hole
Number of Pins	16
Operating Temperature Range	-40°C to 105°C
Output Voltage	50 V
SVHC Present	Not Present

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ULN2003B Description

Short technical summary and product information.

The ULN2003B from Texas Instruments is a versatile high-voltage, high-current Darlington transistor array designed for switching inductive loads. It comprises seven NPN Darlington pairs, each equipped with common-cathode clamp diodes for protection.

Key electrical specifications include a 50V high-voltage output capability and a 500mA rated collector current for a single output. The device features inputs compatible with various logic types, including TTL and CMOS, due to a 2.7kΩ series base resistor for each pair. Typical delay time is 250ns, and output leakage current is rated at 50µA.

This array is suitable for applications such as relay drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The Darlington pairs can be paralleled for increased current handling capacity.

The ULN2003B is available in multiple package types: PDIP (16-pin) with dimensions of 19.30 mm x 6.35 mm, SOIC (16-pin) measuring 9.90 mm x 3.91 mm, and TSSOP (16-pin) with dimensions of 5.00 mm x 4.40 mm. The operating temperature range is -40°C to 105°C.

ULN2003B Quick Information

Product Type: Darlington Transistor Array

Canonical Name: Texas Instruments ULN2003B High-Voltage, High-Current Darlington Transistor Array

Subcategory: Darlington

ULN2003B Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

ULN2003B Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

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

ULN2003B Features

Seven NPN Darlington transistor pairs.
50V high-voltage output capability.
500mA rated collector current per output.
Integrated output clamp diodes.
TTL and CMOS compatible inputs.

ULN2003B Applications

Relay driver applications.
Lamp driver applications.
Display driver applications.
Logic buffer applications.

ULN2003B FAQs

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

What is the maximum collector current for a single output of the ULN2003B?

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

What is the high-voltage output rating of the ULN2003B?

The ULN2003B features high-voltage outputs rated at 50 V.

What types of logic are compatible with the ULN2003B inputs?

The inputs are compatible with various types of logic, including TTL and CMOS devices.

What is the operating temperature range for the ULN2003B?

The operating temperature range is from -40°C to 105°C.

What package options are available for the ULN2003B?

The ULN2003B is available in PDIP, SOIC, and TSSOP packages, all with 16 pins.

Is the ULN2003B RoHS compliant?

The RoHS status is listed as RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the ULN2003B?

The Moisture Sensitivity Level is 1 Unlimited.