ULN 2003 board
ULN 2003 board
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Looking to buy ULN 2003 board at the best price in India? Tech Depot India offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
Specifications
| IC Chip | ULN2003A (7-channel Darlington transistor array) |
| Number of Channels | 7 (independent high-current outputs) |
| Output Type | Open-collector Darlington pairs with integrated flyback diodes |
| Input Voltage (Logic) | 3.3V - 5V (TTL/CMOS compatible) |
| Motor/Load Supply Voltage | 5V - 12V DC (up to 50V max per ULN2003A datasheet) |
| Max Output Current | 500mA per channel (peak), recommended continuous ~300mA |
| Total IC Rating | Up to 2.5A aggregate across all channels (with thermal considerations) |
| Stepper Motor Connector | 5-pin female header (direct plug for 28BYJ-48 stepper motor) |
| Input Header | 4-pin or 7-pin male header for microcontroller connections (IN1-IN4 / IN1-IN7) |
| LED Indicators | 4 or 7 onboard LEDs (one per active channel for status monitoring) |
| Flyback Protection | Built-in suppression diodes on each output for inductive load protection |
| Board Dimensions | Approximately 30mm x 35mm (compact form factor) |
| Mounting | Screw holes / standoff compatible for secure project mounting |
| Operating Temperature | -20 degreesC to +70 degreesC |
| Compatibility | Arduino UNO/Nano/Mega, ESP8266, ESP32, Raspberry Pi, STM32, PIC, and other 3.3V/5V logic MCUs |
| Primary Use | 28BYJ-48 unipolar stepper motor driving, relay control, solenoid driving, LED array switching |
| Type | Motor Driver / Darlington Array Breakout Board |
| Origin | Original / Authentic ULN2003A IC |
Why Choose ULN 2003 board?
100% Authentic
GST Invoice - A GST invoice is included with every order.
Expert Support - Dedicated technical help on WhatsApp and email.
Pan-India Delivery - Shipped across Bengaluru, Delhi NCR, Hyderabad and all of India.
Trusted by Makers - Used by students, hobbyists and professionals nationwide.
Key Features of ULN 2003 board
- 7 Darlington Pair Outputs: Each channel can sink up to 500mA, making it capable of driving stepper motors, relays, solenoids, lamps, and other medium-power loads that microcontroller GPIO pins cannot handle directly.
- Direct 28BYJ-48 Compatibility: The onboard 5-pin connector allows plug-and-play connection to the widely used 28BYJ-48 unipolar stepper motor - no additional wiring or adapters needed.
- Built-in Flyback Diodes: Integrated suppression diodes on every output channel protect your circuit from voltage spikes generated by inductive loads such as motors, relays, and solenoids during switching.
- 3.3V & 5V Logic Compatible: Input pins accept both 3.3V and 5V logic levels, ensuring seamless interfacing with Arduino, ESP32, ESP8266, Raspberry Pi GPIO, STM32, and virtually any popular development board.
- Onboard LED Status Indicators: Individual LEDs on each output channel provide real-time visual confirmation of which outputs are active - invaluable for debugging and monitoring during development.
- Compact & Breadboard-Friendly: The small PCB footprint fits easily on breadboards, perfboards, or inside project enclosures, and mounting holes allow secure installation in permanent builds.
- Simple Wiring: Connect microcontroller digital pins to the input header, attach your motor or load to the output connector, supply power, and you're ready - minimal external components required.
- Versatile Beyond Stepper Motors: While optimized for stepper motor control, each channel works independently for switching relays, LED strips, buzzers, solenoid valves, DC motors (single direction), and other loads.
ULN2003 Stepper Motor Driver Board
Drive stepper motors and high-current loads effortlessly with the ULN2003 driver board from Tech Depot India, Bengaluru. This compact breakout board integrates the popular ULN2003A Darlington transistor array, providing seven high-voltage, high-current open-collector outputs - ideal for controlling 28BYJ-48 stepper motors, relays, solenoids, LED strips, and other inductive loads directly from microcontrollers like Arduino, ESP32, and Raspberry Pi. Onboard LED indicators for each channel give instant visual feedback of output status.
Frequently Asked Questions
Is technical support available?
Yes, responsive support via email and WhatsApp for setup, troubleshooting, and application guidance.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Customer Support
Email: techdepotindia@gmail.com
WhatsApp: Available for setup and troubleshooting help
Order your ULN 2003 board today and start building your next project.