ULN2803A Darlington Arrays by STMicroelectronics

Eight Darlington Arrays

Status: Active
Series: ULN2803A
RoHS: Compliant
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The ULN2801A, ULN2802A, ULN2803A and ULN2804A each contain eight Darlington transistors with common emitters and integral suppression diodes for inductive loads. Each Darlington features a peak load current rating of 600 mA (500 mA continuous) and can withstand at least 50 V in the OFF state. Outputs may be paralleled for higher current capability. Four versions are available to simplify interfacing to standard logic families: the ULN2801A is designed for general purpose applications with a current limit resistor; the ULN2802A has a 10.5 kΩ input resistor and Zener for 14-25 V PMOS; the ULN2803A has a 2.7 kΩ input resistor for 5 V TTL and CMOS; the ULN2804A has a 10.5 kΩ input resistor for 6-15 V CMOS. All types are supplied in an 18-lead plastic DIP with a copper lead form and feature the convenient input-opposite-output pinout to simplify board layout.

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Prices starting from US$0.17

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Eight Darlington transistors with common emitters
Output current to 500 mA
Output voltage to 50 V
Integral suppression diodes
Versions for all popular logic families
Output can be paralleled
Inputs pinned opposite outputs to simplify board layout


Product Specifications
DS0161 Eight Darlington arrays

Alternative Descriptions

Bipolar (Bjt) Array Transistor, Darlington, Npn, 50 V, 2.25 W, 500 Ma, 1000, Dip Rohs Compliant: Yes |Stmicroelectronics ULN2803A | Newark Electronics
DARLINGTON ARRAY 8NPN, 2803, DIP18 | element14
Load Driver, 4 A, 18 Pins, PDIP | Avnet America
8xDarl-Dr. 50V 0,5A TTL/CMOS DIP18 | Schukat Electronic
ULN Series 50V 500 mA Integral Suppression Diode Eight Darlington Array - DIP-18 | Future Electronics
IC: driver | Transfer Multisort Elektronik
ST Darlington Driver NPN PDIP | Distrelec
ST ULN2803A Octal Darlington Driver | Rapid Electronics
Trans Darlington NPN 50V 0.5A PDIP18 | RS

Frequently Asked Questions

Where can I find additional details, specifications and documents for a ULN2803A?

Additional datasheets, footprints and schematics for ULN2803A are listed on our Part Details page. You can also find images and similar parts to ULN2803A on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for ULN2803A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view ULN2803A price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does ULN2803A fall under?

The ULN2803A is listed under Interfaces and Transceivers > Darlington Arrays.

Can I view similar or alternative parts?

You can view similar parts to ULN2803A 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 ULN2803A you can contact the distributor directly for product support, shipping queries etc.

Is the ULN2803A RoHS compliant?

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

Which authorised distributors for ULN2803A have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Avnet America and Schukat Electronic have stock available or on a lead time for ULN2803A.

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