The 12V SPDT PCB Relay is an electromagnetic relay designed for switching high-voltage or high-current loads using a low-voltage control signal. It is widely used in Arduino projects, automation systems, home appliances, power supplies, industrial control, and DIY electronics. The relay features a 12V DC coil and Single Pole Double Throw (SPDT) contacts, allowing you to control AC or DC loads safely.
Features
- Full Name: 12V SPDT Electromagnetic PCB Relay
- 12V DC coil operation
- SPDT (1 Form C) contact configuration
- High switching capacity
- Low coil power consumption
- PCB through-hole mounting
- Reliable electromagnetic switching
- Long mechanical and electrical life
Specifications
| Specification | Value |
|---|---|
| Product Type | Electromagnetic Relay |
| Relay Type | SPDT (Single Pole Double Throw) |
| Coil Voltage | 12V DC |
| Contact Rating | 10A @ 250V AC / 10A @ 30V DC |
| Contact Configuration | 1 Form C (COM, NO, NC) |
| Coil Resistance | Approx. 400Ω |
| Coil Power | Approx. 0.36W |
| Mounting Type | Through-Hole PCB |
| Insulation Resistance | ≥100 MΩ |
| Electrical Life | 100,000 Operations (Typical) |
| Mechanical Life | 10 Million Operations (Typical) |
Pin Configuration
| Pin | Description |
|---|---|
| Coil 1 | 12V DC Coil Terminal |
| Coil 2 | 12V DC Coil Terminal |
| COM | Common Contact |
| NO | Normally Open Contact |
| NC | Normally Closed Contact |
Note: When the 12V coil is energized, the relay switches the COM terminal from NC to NO.
Applications
- Arduino projects
- ESP32 and Raspberry Pi projects
- Home automation
- Industrial automation
- Motor control
- Lighting control
- Security systems
- Smart home devices
- DIY electronics projects
Advantages
- Isolates low-voltage control circuits from high-voltage loads
- High current switching capability
- Reliable and durable operation
- Low power coil consumption
- Easy PCB mounting
- Long service life
- Cost-effective
Size
| Specification | Value |
|---|---|
| Dimensions | Approx. 19 × 15.5 × 15 mm |
| Mounting Type | Through-Hole PCB |
| Weight | Approx. 12 g |
Package Includes
- 1 × 12V SPDT PCB Relay
Note: Although the relay coil operates at 12V DC, the contacts can switch high-voltage AC or DC loads. Always ensure the connected load does not exceed the relay’s 10A rating, and follow proper electrical safety precautions when working with mains voltage.






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