SPDT 5V Relay Module – 5-Pin PCB Mount Type

The SPDT 5V PCB Mount Relay (Single Pole Double Throw) is an electromechanical switch that allows low-power digital circuits like microcontrollers to control high-voltage AC or DC devices. Operating at just 5V DC, this relay is widely used in automation, home appliances, IoT projects, robotics, and switching applications.

The 5-pin design makes it easy to mount directly onto a PCB, and the SPDT configuration means it has one common terminal that can be connected to either of two outputs (Normally Open or Normally Closed), offering flexible switching options.

Key Features

✅ SPDT (Single Pole Double Throw) configuration
✅ Operates on 5V DC coil voltage
✅ Capable of switching AC and DC loads
✅ 5-pin PCB mountable package for easy soldering
✅ Isolation between control and switching circuits
✅ Compact and durable design
✅ Ideal for switching motors, lamps, fans, solenoids, and more

Technical Specifications

Parameter	Specification
Relay Type	Electromechanical
Configuration	SPDT (Single Pole Double Throw)
Coil Voltage	5V DC
Coil Resistance	~70Ω ±10%
Operating Current	~70–100 mA
Contact Rating (AC)	250V AC at 10A
Contact Rating (DC)	30V DC at 10A
Contact Material	Silver Alloy
Switching Time (ON/OFF)	~10 ms / 5 ms
Insulation Resistance	≥ 100MΩ (500VDC)
Dielectric Strength	Between coil and contacts: 1500VAC, 1 min
Mechanical Life	≥ 10 million operations
Electrical Life	≥ 100,000 operations at rated load
Mounting Type	Through-hole (PCB mount)
Number of Pins	5
Body Dimensions (approx.)	19mm x 15.5mm x 15.5mm
Weight	~10g

Pin Configuration (5-Pin Relay)

Pin Number	Pin Name	Description
1	Coil Pin 1	Connect to 5V DC
2	Coil Pin 2	Connect to GND
3	Common (COM)	Common terminal for NO and NC
4	Normally Closed (NC)	Connected to COM when relay is off
5	Normally Open (NO)	Connected to COM when relay is on