If you like Findchips… You will love Findchips PRO. Try it Now.

ULN2803A

Power Bipolar Transistor, 0.5A I(C), 50V V(BR)CEO, 8-Element, NPN, Silicon, Plastic/Epoxy, 18 Pin, PLASTIC, CASE 707, DIP-18

Choose Manufacturer

Part Details

CAD Models Information

Model Data Powered by Samacsys
There are no models available for this part yet.

Sign in to request this CAD model.

Register or Sign In

Distributors with Stock

Total Inventory

192

Global Popularity

Popularity in Transistors

Popularity in Power Bipolar Transistors

Popularity by Region

Very High

Medium

Good

Low

  • 1. Bangladesh
    100
  • 2. China
    99
  • 3. United States of America
    96
  • 4. Italy
    92
  • 5. India
    91
  • 6. Canada
    87
  • 7. South Korea
    87
  • 8. Czech Republic
    85
  • 9. Oman
    84
  • 10. Macedonia
    84

Estimated Price History

Estimated Stock History

Market Price Analysis

No data available

Datasheets & Reference Designs

Frequently Asked Questions (FAQ)

  • Q: How do I use the ULN2803 with Arduino?

    A: I used a Darlington ULN2803 with an Arduino to control a giant common anode 7-segment display from Evil Mad Scientist. Normal sized 7-segment displays consist of 7 rectangular leds arranged so that they can display the numbers 0-9. Lighting up one segment of a normal 7-segment display is equivalent to lighting up an LED, it requires about 3V and 20mA; this is easily accomplished by the Arduino alone. more

  • Q: Where can I find a ULN2803 pinout?

    A: ULN2803 is an 18 pin IC which will be available in various packages. The description for each pin is given below. more

  • Q: Where can I download the ULN2803 circuit schematic?

    A: ULN2803 is a High voltage, high current Transistor Array IC used especially with Microcontrollers where we need to drive high power loads. Thic IC consists of a eight NPN Darlington connected transistors with common Clamp diodes for switching the loads connected to the output. more

  • Q: How can I make a ULN2803 relay driver?

    A: 8 Channel Relay Board is a simple and convenient way to interface 8 relays for switching application in your project. Input voltage level support TTL as well as CMOS. Easy interface with Micro-ontrollers based projects and analog circuits. more

  • Q: Are there SMD packages for the ULN2803?

    A: Mounting Style: SMD/SMT more

  • Q: How can I make a ULN2803 relay board?

    A: Relays are one of the most common interfaces between a micro controller and the outside world. It provides electrical isolation between the low voltage circuits of the micro controller, and the loads. more

  • Q: Where can I find more information about the ULN2803?

    A: The ULN2003A is an array of seven NPN Darlington transistors capable of 500 mA, 50 V output. It features common-cathode flyback diodes for switching inductive loads. It can come in PDIP, SOIC, SOP or TSSOP packaging. more

  • Q: Where can I find details about the ULN2803 LED driver circuit?

    A: LED strips are the most recent trend in interior as well exterior designing. LED strips are amazing by it’s availability in various colors and simplicity in handling. Controlling LED strips using Arduino is an interesting task. more

Related Parts

Add to list:
Create New List

Confirm BOM Data

! Unable to save document.
Please try again.

!

Part Number ( parts) Qty CPN Designator Partent PN

BOM Options

Preferred distributors for this list (10)

Select preferred distributors

!  

Working...

Your FindChips PRO license has expired.

Please update your account details for future billings.

Update Account Details → or Request Extension →
You have a Findchips Basic account.

Your account has reached its list limit (3 Lists). To create a new list, an existing list must be removed.

Upgrade to Findchips Pro to increase your List count to 200

Upgrade to FindChips PRO →