🔁 5 V DC SPDT Relay – 5 Pin Through-Hole
Overview
A reliable 5 V DC power relay with SPDT (Single Pole Double Throw) contacts in a compact through-hole package. Commonly used in microcontroller circuits (Arduino, ESP32) to switch up to 10 A loads at 250 VAC or 30 VDC, providing electrical isolation and dependable performance for medium-current applications.
Key Features
Coil Voltage: 5 V DC
Contact Configuration: SPDT (1 Form C: COM, NO, NC)
Contact Rating: Up to 10 A @ 250 VAC or 30 VDC
Coil Current: ~80–90 mA
Operate/Release Time: ~10 ms / 5 ms
Mechanical Life: 10 million cycles
Electrical Life: ~100,000 cycles at rated load
Standard 5-pin PCB footprint, sealed case, through-hole solder pins
Technical Specifications
| Parameter | Value |
|---|
| Coil Voltage | 5 V DC |
| Coil Resistance | ~55–63 Ω (≈80–90 mA) |
| Contact Form | SPDT (COM/NC/NO) |
| Rated Load Current | 10 A @ 250 VAC / 30 VDC |
| Coil Power | ≈0.4 W |
| Pick‑Up Voltage | ≥ 3.5 V |
| Release Voltage | ≤ 0.5 V |
| Max Switching Times | ≤300 ops/minute |
| Insulation Resistance | ≥1000 MΩ |
| Dielectric Strength | ≥1500 VAC coil‑contacts |
| Operating Temperature | –40 °C to +85 °C |
| Dimensions | ~20 × 15 × 15 mm (varies by model) |
Wiring with Arduino (Example)
Coil side (5 V control):
Switching side:
Applications
Turning lights, motors, pumps ON/OFF
Home automation and smart controls
Industrial interface and signal switching
DIY electronics and Arduino projects
Electrical isolation and high-current load handling
Resources
