ULN2004A Darlington Arrays by STMicroelectronics

Seven Darlington Arrays

Status: Active
Series: ULN2004
RoHS: Compliant
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The ULN2001, ULN2002, ULN2003 and ULN 2004 are high-voltage, high-current Darlington arrays each containing seven open collector Darlington pairs with common emitters. Each channel is rated at 500 mA and can withstand peak currents of 600 mA. Suppression diodes are included for inductive load driving and the inputs are pinned opposite the outputs to simplify board layout. The versions interface to all common logic families: ULN2001 (general purpose, DTL, TTL, PMOS, CMOS); ULN2002 (14 - 25 V PMOS); ULN2003 (5 V TTL, CMOS); ULN2004 (6 - 15 V CMOS, PMOS). These versatile devices are useful for driving a wide range of loads including solenoids, relay DC motors, LED display filament lamps, thermal printheads and high-power buffers. The ULN2001A/2002A/2003A and 2004A are supplied in a 16-pin DIP package with a copper leadframe to reduce thermal resistance. They are available also in small outline package (SO-16) as ULN2001D1/2002D1/2003D1/ 2004D1.

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Prices starting from US$0.19

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Seven Darlingtons per package
Output current 500 mA per driver (600 mA peak)
Output voltage 50 V
Integrated suppression diodes for inductive loads
Outputs can be paralleled for higher current
TTL/CMOS/PMOS/DTL compatible inputs
Input pins placed opposite to output pins to simplify layout


Product Specifications
DS1168 Seven Darlington arrays

Alternative Descriptions

DARLINGTON ARRAY 7NPN, 2004, DIP16 | element14
Darlington Array 7Npn, 2004, Dip16 | Newark Electronics
ULN Series 50 V 500 mA Through Hole Seven Darlington Array - DIP-16 | Future Electronics
Load Driver, 3.5 A, 16 Pins, PDIP | Avnet America
IC: driver | Transfer Multisort Elektronik
7xDarl-Dr. 50V 0,5A PMOS/CMOS DIP16 | Schukat Electronic
Darlington Array x7 NPN 50V 0.5A PDIP16 | RS
ST Darlington Driver NPN DIP | Distrelec
ST ULN2004A Trans Array 7 Matched DIL | Rapid Electronics

ULN2004A Peripheral Drivers by Diodes Incorporated

The ULN2002A, ULN2003A and ULN2004A are high voltage, high current Darlington arrays each containing seven open collector common emitter pairs. Each pair is rated at 500mA. Suppression diodes are included for inductive load driving, the inputs and outputs are pinned in opposition to simplify board layout. Device options are designed to be compatible with common logic families: ULN2002A (14-25V PMOS) ULN2003A (5V TTL, CMOS) ULN2004A (6-15V CMOS, PMOS) These devices are capable of driving a wide range of loads including solenoids, relays, DC motors, LED displays, filament lamps, thermal print-heads and high-power buffers. The ULN2002A, ULN2003A and ULN2004A are available in both a small outline 16-pin package (SO-16) and PDIP-16 package.


500mA Rated Collector Current (Single Output)
High Voltage Outputs: 50V
Output Clamp Diodes
Inputs Compatible with Popular Logic Types
Relay Driver Applications
Relay Driver
Stepping Motor Driver
Home Appliance
Industrial Application


Numberof Drivers 7
Input Compatibility PMOS, CMOS, 6 to 15V
InputVoltageMax (V) 30 V
Collector to EmitterVoltage Rating (V) 50 V
OutputVoltage Max (V) 50 V
OutputCurrentMax (mA) 500 mA
DelayTime Typ (ns) 250 ns
OperatingTemperatureRange (°C) -40 to 105 °C

Frequently Asked Questions

Where can I find additional details, specifications and documents for a ULN2004A?

Additional datasheets, footprints and schematics for ULN2004A are listed on our Part Details page. You can also find images and similar parts to ULN2004A on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ULN2004A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ULN2004A price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ULN2004A fall under?

The ULN2004A is listed under Interfaces and Transceivers > Darlington Arrays.

Can I view similar or alternative parts?

You can view similar parts to ULN2004A when available in the Darlington Arrays range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the ULN2004A you can contact the distributor directly for product support, shipping queries etc.

Is the ULN2004A RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for ULN2004A have stock available?

Authorised distributors including element14, Newark Electronics, Farnell, Future Electronics and Avnet America have stock available or on a lead time for ULN2004A.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for ULN2004A often in real-time on the comparison pages.

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