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ULN2004

The STMicroelectronics ULN2004 is a 7-channel Darlington transistor array designed for high-voltage and high-current applications. It features 50V outputs and 500mA current capability per channel.

✓ Total Stock: 309 pcs

$ Price Range: $2.29

ULN2004 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Braun Electronic Components ✓ Non-Authorised Inventory information	309 pcs On Request	309 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

ULN2004 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	STMicroelectronics
Lead Spacing	2.54 mm
Operating Temperature	-40°C to 70°C

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ULN2004 Description

Short technical summary and product information.

The ULN2004 from STMicroelectronics is a versatile 7-channel high-voltage, high-current Darlington transistor array. Each channel is equipped with an NPN Darlington pair and features high-voltage outputs with common-cathode clamp diodes, making it suitable for switching inductive loads.

Key electrical specifications include a maximum switching voltage of 50V and a peak output current of 0.5A per output. The array offers a maximum output current per channel of 500mA and a typical delay time of 250ns. Input compatibility is with CMOS logic, and the typical voltage at the lowest specified current is 900mV.

This device is available in multiple package types, including SOIC (D), PDIP (N), SOT-23-THN (DYY), and SOP (NS). Its operating temperature range is from -40°C to 70°C.

Applications for the ULN2004 include relay drivers, hammer drivers, lamp drivers, LED and gas discharge display drivers, line drivers, and logic buffers. The integrated clamp diodes provide protection against voltage transients when switching inductive loads.

ULN2004 Quick Information

Product Type: Darlington Transistor Array

Canonical Name: ULN2004 7-Channel Darlington Transistor Array

Subcategory: Drivers, Receivers, Transceivers

ULN2004 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

ULN2004 Estimated Pricing

Qty	Low	High
1+	$2.29	$2.29

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

ULN2004 Features

7-channel Darlington transistor array.
High-voltage outputs up to 50V.
500mA rated collector current per output.
Includes output clamp diodes.
Suitable for inductive load switching.

ULN2004 Applications

Ideal for relay driver applications.
Used for driving lamps and LEDs.
Suitable for display drivers.
Functions as a logic buffer.
Applicable for line driver circuits.

ULN2004 FAQs

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

What is the operating temperature range of the ULN2004?

-40°C to 70°C.

What package options are available for the ULN2004?

SOIC (D), PDIP (N), SOT-23-THN (DYY), and SOP (NS).

How many drivers are in the ULN2004?

7 drivers per package.

What is the maximum switching voltage?

50V.

What is the peak output current per channel?

0.5A (500mA).

What is the typical delay time?

250ns.

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