SPDT 12V 10A 5-Pin Relay

The SPDT 12V 10A 5-Pin Relay is a compact, high-performance electromechanical switch that allows microcontrollers to control high-current AC or DC devices. With a 12V DC coil and a 10A contact rating, this relay is widely used in automated switching applications, home automation, robotics, and DIY electronics.

SPDT stands for Single Pole Double Throw, meaning the relay can connect a common terminal to one of two others (normally open or normally closed), offering flexibility in controlling devices based on the input signal. It is ideal for logic-level controllers like 🔗 Arduino, 🔗 ESP8266, and 🔗 Raspberry Pi.

🔍 Technical Specifications:

• Type: SPDT – Single Pole Double Throw

• Pins: 5-Pin Standard PCB Mount

• Coil Voltage: 12V DC

• Switching Current: Up to 10A

• Switching Voltage: 250V AC / 30V DC max

• Contact Material: Silver Alloy

• Insulation Resistance: ≥100MΩ (500V DC)

• Contact Resistance: ≤100mΩ

• Mechanical Life: 10 million operations

• Mounting: Through-hole (suitable for relay boards or PCBs)

• Indicator LED: No

• Dimensions: Compact 19mm x 15mm x 15mm approx.

⚙️ Key Features & Benefits:

• ✅ Supports both NO (Normally Open) and NC (Normally Closed) connections

• ✅ Reliable switching of high-current loads

• ✅ Works seamlessly with microcontrollers and relay drivers

• ✅ Suitable for AC appliances and DC motors alike

• ✅ Standard 5-pin footprint for easy prototyping

• ✅ Excellent for automotive, industrial, and DIY automation

💡 Common Applications:

• Smart home automation systems

• Load switching in IoT devices

• Robotics and motor control

• Fan, pump, light, and actuator switching

• Automotive electronics projects

• Security and alarm system controls

• Relay driver circuit designs

• School and college-level electronics projects

🔌 Microcontroller Compatibility:

This relay can be triggered using logic signals from Arduino, ESP8266, ESP32, STM32, Raspberry Pi, and other development boards. Often used with 🔗 relay driver modules, it allows safe interfacing between low-voltage controllers and high-voltage appliances.

⚠️ Precautions:

• Use a flyback diode when switching inductive loads to prevent damage.

• Ensure isolation from high-voltage circuits when used on breadboards.

• Avoid switching loads beyond 10A without a heat sink or external protection.

• Never connect AC loads directly to microcontroller pins – always use relay drivers.

• Use in a well-ventilated, dry environment.

📍 Available Now at ElectroWay — your trusted electronics and automation supplier based in Johar Town, Lahore. We provide the best components for STEM learning, DIY electronics, and industrial prototyping.

🎥 External Learning Video:
How Relays Work – SPDT Relay Explained (YouTube)

🔗 Helpful Links & Related Products:

• ESP8266 WiFi Modules

• Arduino Boards

• Microcontroller Accessories

• Modules & Sensors