Uln2803 Uln2803a Uln2803apg Ic In Pakistan

ULN2803A Darlington Transistor Array IC – 8-Channel Relay & Motor Driver | DIP-18 | Best Price in Pakistan

The ULN2803A is a robust, high-voltage, high-current Darlington transistor array, designed to interface directly with TTL and CMOS logic to drive heavy inductive loads like relays, motors, and lamps. With eight NPN Darlington pairs and built-in clamp diodes, it’s a go-to choice for industrial and hobby applications alike.

📦 Package Includes:

• ✅ 1 x ULN2803A IC – DIP-18 Package

⚙️ Key Features:

• 🔋 8-Channel NPN Darlington Transistor Array

• 🚀 High Output Current per Channel – Up to 500mA per output

• ⚡ High Voltage Tolerance – Up to 50V output voltage

• 🔄 Integrated Clamp Diodes – Safe switching of inductive loads (relays, motors)

• 🤝 Logic Compatible Inputs – Directly compatible with TTL/CMOS (5V logic)

• 🧰 Standard DIP-18 Package – Easy to use in breadboards and PCBs

• 🛡️ Thermal Protection via External Heatsinking (for parallel operation)

📊 Technical Specifications:

⚙️ Applications:

• 🔁 Relay Driver – Easily drive 12V/24V relays with microcontroller logic

• 💡 LED Driver – Drive 8 high-power LEDs or segments independently

• 🛠️ Stepper Motor Controller – Suitable for robotics and CNC projects

• 🖨️ Printer Hammer Driver – Used in dot matrix printers

• 🏭 Industrial Equipment Control – Interface between logic circuits and high-power loads

• ⚙️ Logic Buffering & Signal Driving – Ideal for expanding I/O capabilities

🧠 How It Works:

Each of the 8 channels in the ULN2803A is a Darlington pair—this means two NPN transistors are connected together to provide high current gain. When a logic HIGH (e.g. 5V from an Arduino) is applied to the input pin, the corresponding output is pulled LOW, allowing current to flow through the load connected between V+ and the output pin.

🔧 Quick Tips:

• 🔹 Connect loads between +V and OUTx (Open collector)

• 🔹 Use a flyback diode only if you’re not using the built-in clamp

• 🔹 Can parallel channels to increase current capacity (ensure heat dissipation)

• 🔹 Compatible with Arduino, Raspberry Pi, PIC, and STM32

📍 Why Buy From Us?

• 🇵🇰 Delivered All Over Pakistan – Karachi, Lahore, Islamabad & more

• ✅ Genuine Tested Components

• 🚚 Fast Shipping & Same-Day Dispatch

• 📞 Support for Hobbyists & Engineers

🛒 Order Your ULN2803A Today!

Control multiple relays, motors, or lights with ease using the ULN2803A Darlington Array IC. A reliable solution for all your high-current switching needs.